Sample viewer

vx.netlux.org/Virus.DOS.Fumble.867.a

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:59:46.89941752Z 26 PC: 12a82 | Set disk transfer address
2018-12-17T22:59:46.901216257Z 42 PC: 12a92 | Get date 0x12a92: test dl, 1
0x12a95: jne 0x12ab6
0x12a97: mov dx, si
0x12a99: add dx, 5
0x12a9d: xor cx, cx
0x12a9f: mov ah, 0x4e
0x12aa1: int 0x21
0x12aa3: jb 0x12ab6
0x12aa5: call 0x12ad4
0x12aa8: mov dx, si
0x12aaa: add dx, 5
0x12aae: xor cx, cx
0x12ab0: mov ah, 0x4f
0x12ab2: int 0x21
0x12ab4: jae 0x12aa5
0x12ab6: mov al, byte ptr [si + 0x12]
0x12ab9: mov byte ptr [0x100], al
0x12abc: mov ax, word ptr [si + 0x13]
0x12abf: mov word ptr [0x101], ax
0x12ac2: mov dx, 0x80
2018-12-17T22:59:46.903441978Z 26 PC: 12ac9 | Set disk transfer address
2018-12-17T22:59:46.904749809Z 74 PC: 12c99 | Reallocate memory
2018-12-17T22:59:46.917241253Z 49 PC: 12a42 | Terminate and stay resident (Return code = '126' | Memory size = '30')