Sample viewer

vx.netlux.org/Virus.DOS.Jacov.757

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:55:43.420185293Z 53 PC: 12c63 | Get interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:55:43.42187975Z 37 PC: 12c71 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:55:43.423224048Z 26 PC: 12c98 | Set disk transfer address
2018-12-17T22:55:43.424396303Z 78 PC: 12cea | Find first file
2018-12-17T22:55:43.43196668Z 61 PC: 12cf6 | Open file (Filename = 'TEST.EXE')
2018-12-17T22:55:43.439241982Z 63 PC: 12d02 | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:55:43.442272521Z 62 PC: 12d06 | Close file
2018-12-17T22:55:43.445317839Z 79 PC: 12cea | Find next file
2018-12-17T22:55:43.448320005Z 78 PC: 12cea | Find first file
2018-12-17T22:55:43.45463436Z 61 PC: 12cf6 | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:55:43.462378443Z 63 PC: 12d02 | Read file or device (Read 26 bytes on handle 5)
2018-12-17T22:55:43.468767329Z 62 PC: 12d06 | Close file
2018-12-17T22:55:43.471498936Z 67 PC: 12d7a | Get or set file attributes
2018-12-17T22:55:43.490757444Z 61 PC: 12d7f | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:55:43.497244113Z 66 PC: 12d88 | Move file pointer
2018-12-17T22:55:43.498868969Z 44 PC: 12dfa | Get time 0x12dfa: xchg cl, ch
0x12dfc: add dx, cx
0x12dfe: xor dx, word ptr [bp + 0x3f0]
0x12e02: mov word ptr [bp + 0x3f0], dx
0x12e06: lea si, word ptr [bp + 0x399]
0x12e0a: lea di, word ptr [bp + 0x449]
0x12e0e: mov cx, 0x18
0x12e11: rep movsb byte ptr es:[di], byte ptr [si]
0x12e13: mov ah, 0x40
0x12e15: mov cx, 0x2f5
0x12e18: lea dx, word ptr [bp + 0x100]
0x12e1c: pushaw
0x12e1d: call 0x12f71
0x12e20: mov ax, 0x4200
0x12e23: xor cx, cx
0x12e25: cdq
0x12e26: int 0x21
0x12e28: mov ah, 0x40
0x12e2a: cmp byte ptr [bp + 0x446], 0x63
0x12e2f: jne 0x12e3c
2018-12-17T22:55:43.501466513Z 64 PC: 12f7e | Write file or device (Write 757 bytes on handle 5)
2018-12-17T22:55:43.510403531Z 66 PC: 12e28 | Move file pointer
2018-12-17T22:55:43.512267497Z 64 PC: 12e3a | Write file or device (Write 3 bytes on handle 5)
2018-12-17T22:55:43.519157294Z 87 PC: 12e53 | Get or set file date and time
2018-12-17T22:55:43.521650763Z 62 PC: 12e57 | Close file
2018-12-17T22:55:43.529444129Z 67 PC: 12e64 | Get or set file attributes
2018-12-17T22:55:43.538920622Z 37 PC: 12e6c | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T22:55:43.541271633Z 26 PC: 12e76 | Set disk transfer address
2018-12-17T22:55:43.542869808Z 9 PC: 12a82 | Display string (String= 'Goat file (EXE). Size=000003E8h/0000001000d bytes. ')
2018-12-17T22:55:43.546973886Z 76 PC: 12a86 | Terminate with return code (Return code = '36')