Sample viewer

vx.netlux.org/Virus.DOS.Jerk.1077

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:11:14.036438391Z 53 PC: 12a7a | Get interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:11:14.037654829Z 37 PC: 12a8d | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:11:14.042982109Z 51 PC: 12a94 | Get or set Ctrl-Break
2018-12-17T23:11:14.043938789Z 26 PC: 12aae | Set disk transfer address
2018-12-17T23:11:14.045111665Z 25 PC: 12ab2 | Get default drive
2018-12-17T23:11:14.047570469Z 14 PC: 12b27 | Set default drive (Drive = 'A')
2018-12-17T23:11:14.049390523Z 54 PC: 12b2e | Get free disk space
2018-12-17T23:11:14.051774977Z 54 PC: 12b2e | Get free disk space
2018-12-17T23:11:14.054363706Z 54 PC: 12b2e | Get free disk space
2018-12-17T23:11:14.100171404Z 14 PC: 12b48 | Set default drive (Drive = 'C')
2018-12-17T23:11:14.10174343Z 91 PC: 12b53 | Create new file
2018-12-17T23:11:14.439981545Z 65 PC: 12b59 | Delete file (Filename = '\^^^^^^^^')
2018-12-17T23:11:14.452947071Z 71 PC: 12bea | Get current directory
2018-12-17T23:11:14.455958876Z 59 PC: 12b6b | Change current directory
2018-12-17T23:11:14.460199793Z 71 PC: 12bea | Get current directory
2018-12-17T23:11:14.463983599Z 78 PC: 12c89 | Find first file
2018-12-17T23:11:14.470011156Z 67 PC: 12ce8 | Get or set file attributes
2018-12-17T23:11:14.479789618Z 61 PC: 12cf4 | Open file (Filename = 'COMMAND.COM')
2018-12-17T23:11:14.487581464Z 63 PC: 12d08 | Read file or device (Read 9 bytes on handle 6)
2018-12-17T23:11:14.494138556Z 66 PC: 12d39 | Move file pointer
2018-12-17T23:11:14.495709351Z 64 PC: 12d45 | Write file or device (Write 9 bytes on handle 6)
2018-12-17T23:11:14.500374686Z 66 PC: 12d4e | Move file pointer
2018-12-17T23:11:14.502071347Z 64 PC: 12d5a | Write file or device (Write 1077 bytes on handle 6)
2018-12-17T23:11:14.512939398Z 87 PC: 12cc8 | Get or set file date and time
2018-12-17T23:11:14.515443328Z 62 PC: 12ccc | Close file
2018-12-17T23:11:14.52348895Z 67 PC: 12ce8 | Get or set file attributes
2018-12-17T23:11:14.533587173Z 59 PC: 12bf7 | Change current directory
2018-12-17T23:11:14.542134289Z 26 PC: 12acf | Set disk transfer address
2018-12-17T23:11:14.543787318Z 14 PC: 12b27 | Set default drive (Drive = 'A')
2018-12-17T23:11:14.545562678Z 37 PC: 12adc | Set interrupt vector (Interrupt = '36' AKA 'Set random record number')
2018-12-17T23:11:14.548282533Z 42 PC: 12d5f | Get date 0x12d5f: test dl, 3
0x12d62: jne 0x12d86
0x12d64: mov ah, 0x2c
0x12d66: int 0x21
0x12d68: test dh, 3
0x12d6b: jne 0x12d86
0x12d6d: mov cx, 0x47
0x12d70: mov si, 0x446
0x12d73: add si, bp
0x12d75: mov di, si
0x12d77: lodsb al, byte ptr [si]
0x12d78: sub al, 0x80
0x12d7a: stosb byte ptr es:[di], al
0x12d7b: loop 0x12d77
0x12d7d: mov ah, 9
0x12d7f: mov dx, 0x446
0x12d82: add dx, bp
0x12d84: int 0x21
0x12d86: ret
0x12d87: ret