Sample viewer

vx.netlux.org/Virus.DOS.CyberTech.1080

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:02:14.526954209Z 48 PC: 12a99 | Get DOS version
2018-12-17T23:02:14.528522897Z 54 PC: 12aa7 | Get free disk space
2018-12-17T23:02:14.53757781Z 42 PC: 12ab3 | Get date 0x12ab3: cmp cx, 0x7ca
0x12ab7: jae 0x12abc
0x12ab9: jmp 0x12b4d
0x12abc: push cs
0x12abd: pop ds
0x12abe: mov ah, 9
0x12ac0: lea dx, word ptr [bp + 0x278]
0x12ac4: int 0x21
0x12ac6: mov ah, 0x1a
0x12ac8: mov dx, 0xfd00
0x12acb: int 0x21
0x12acd: mov ax, word ptr cs:[0x2c]
0x12ad1: mov ds, ax
0x12ad3: mov si, 0
0x12ad6: mov cx, 0x4000
0x12ad9: lodsb al, byte ptr [si]
0x12ada: cmp al, 1
0x12adc: je 0x12ae0
0x12ade: loop 0x12ad9
0x12ae0: inc si
2018-12-17T23:02:14.539396137Z 9 PC: 12ac6 | Display string (Could not find end pointer)
2018-12-17T23:02:14.554348802Z 26 PC: 12acd | Set disk transfer address
2018-12-17T23:02:14.560901544Z 67 PC: 12afd | Get or set file attributes
2018-12-17T23:02:14.565480798Z 67 PC: 12b0a | Get or set file attributes
2018-12-17T23:02:14.580326012Z 61 PC: 12b0f | Open file (Filename = 'A:\TEST.COM')
2018-12-17T23:02:14.591210172Z 87 PC: 12b16 | Get or set file date and time
2018-12-17T23:02:14.592950122Z 62 PC: 12b1c | Close file
2018-12-17T23:02:14.595063502Z 60 PC: 12b25 | Create or truncate file
2018-12-17T23:02:14.610564227Z 64 PC: 12b34 | Write file or device (Write 4 bytes on handle 5)
2018-12-17T23:02:14.615153109Z 87 PC: 12b3b | Get or set file date and time
2018-12-17T23:02:14.617035917Z 62 PC: 12b3f | Close file
2018-12-17T23:02:14.626213732Z 67 PC: 12b48 | Get or set file attributes
2018-12-17T23:02:14.637088294Z 26 PC: 12c7b | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":14141,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:39:48.598059038Z 48 PC: 12a99 | Get DOS version
2018-12-25T12:39:48.600032662Z 54 PC: 12aa7 | Get free disk space
2018-12-25T12:39:48.608989065Z 42 PC: 12ab3 | Get date 0x12ab3: cmp cx, 0x7ca
0x12ab7: jae 0x12abc
0x12ab9: jmp 0x12b4d
0x12abc: push cs
0x12abd: pop ds
0x12abe: mov ah, 9
0x12ac0: lea dx, word ptr [bp + 0x278]
0x12ac4: int 0x21
0x12ac6: mov ah, 0x1a
0x12ac8: mov dx, 0xfd00
0x12acb: int 0x21
0x12acd: mov ax, word ptr cs:[0x2c]
0x12ad1: mov ds, ax
0x12ad3: mov si, 0
0x12ad6: mov cx, 0x4000
0x12ad9: lodsb al, byte ptr [si]
0x12ada: cmp al, 1
0x12adc: je 0x12ae0
0x12ade: loop 0x12ad9
0x12ae0: inc si
2018-12-25T12:39:48.611076444Z 26 PC: 12b54 | Set disk transfer address
2018-12-25T12:39:48.613000464Z 78 PC: 12b5e | Find first file
2018-12-25T12:39:48.619931028Z 67 PC: 12b6b | Get or set file attributes
2018-12-25T12:39:48.630713766Z 67 PC: 12b73 | Get or set file attributes
2018-12-25T12:39:48.984758954Z 61 PC: 12b78 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:39:48.992443319Z 87 PC: 12b7e | Get or set file date and time
2018-12-25T12:39:48.993709182Z 63 PC: 12b8b | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:39:49.038496791Z 66 PC: 12bb1 | Move file pointer
2018-12-25T12:39:49.040426404Z 66 PC: 12bd2 | Move file pointer
2018-12-25T12:39:49.041899796Z 63 PC: 12bdc | Read file or device (Read 52 bytes on handle 5)
2018-12-25T12:39:49.044289242Z 66 PC: 12bb1 | Move file pointer (See above)
2018-12-25T12:39:49.046778825Z 44 PC: 12c29 | Get time 0x12c29: cmp dl, 0
0x12c2c: jne 0x12c38
0x12c2e: mov ah, 9
0x12c30: lea dx, word ptr [bp + 0x3d1]
0x12c34: int 0x21
0x12c36: jmp 0x12c25
0x12c38: mov byte ptr cs:[bp + 0x18], dl
0x12c3d: lea si, word ptr [bp + 4]
0x12c41: mov di, 0xfb00
0x12c44: mov cx, 0x18
0x12c47: rep movsb byte ptr es:[di], byte ptr [si]
0x12c49: lea si, word ptr [bp + 0x1c]
0x12c4d: mov cx, 0x416
0x12c50: lodsb al, byte ptr [si]
0x12c51: xor al, dl
0x12c53: stosb byte ptr es:[di], al
0x12c54: loop 0x12c50
0x12c56: mov ah, 0x40
0x12c58: mov dx, 0xfb00
0x12c5b: mov cx, 0x42e
2018-12-25T12:39:49.048931756Z 64 PC: 12c60 | Write file or device (Write 1070 bytes on handle 5)
2018-12-25T12:39:49.073645069Z 66 PC: 12bb1 | Move file pointer (See above)
2018-12-25T12:39:49.07633751Z 64 PC: 12c71 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:39:49.083317487Z 87 PC: 12ca1 | Get or set file date and time
2018-12-25T12:39:49.084914102Z 62 PC: 12ca5 | Close file
2018-12-25T12:39:49.115878071Z 67 PC: 12cae | Get or set file attributes
2018-12-25T12:39:49.120949224Z 65 PC: 12cb6 | Delete file (Filename = 'chklist.cps')
2018-12-25T12:39:49.126940397Z 26 PC: 12c7b | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1995,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":14141,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:39:48.615867617Z 48 PC: 12a99 | Get DOS version
2018-12-25T12:39:48.617965839Z 54 PC: 12aa7 | Get free disk space
2018-12-25T12:39:48.626846576Z 42 PC: 12ab3 | Get date 0x12ab3: cmp cx, 0x7ca
0x12ab7: jae 0x12abc
0x12ab9: jmp 0x12b4d
0x12abc: push cs
0x12abd: pop ds
0x12abe: mov ah, 9
0x12ac0: lea dx, word ptr [bp + 0x278]
0x12ac4: int 0x21
0x12ac6: mov ah, 0x1a
0x12ac8: mov dx, 0xfd00
0x12acb: int 0x21
0x12acd: mov ax, word ptr cs:[0x2c]
0x12ad1: mov ds, ax
0x12ad3: mov si, 0
0x12ad6: mov cx, 0x4000
0x12ad9: lodsb al, byte ptr [si]
0x12ada: cmp al, 1
0x12adc: je 0x12ae0
0x12ade: loop 0x12ad9
0x12ae0: inc si
2018-12-25T12:39:48.629286051Z 9 PC: 12ac6 | Display string (Could not find end pointer)
2018-12-25T12:39:48.649798472Z 26 PC: 12acd | Set disk transfer address
2018-12-25T12:39:48.651152986Z 67 PC: 12afd | Get or set file attributes
2018-12-25T12:39:48.656971462Z 67 PC: 12b0a | Get or set file attributes
2018-12-25T12:39:49.962521246Z 61 PC: 12b0f | Open file (Filename = 'A:\TEST.COM')
2018-12-25T12:39:49.969494058Z 87 PC: 12b16 | Get or set file date and time
2018-12-25T12:39:49.971136632Z 62 PC: 12b1c | Close file
2018-12-25T12:39:49.974000994Z 60 PC: 12b25 | Create or truncate file
2018-12-25T12:39:49.987552014Z 64 PC: 12b34 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:39:49.991007501Z 87 PC: 12b3b | Get or set file date and time
2018-12-25T12:39:49.992443381Z 62 PC: 12b3f | Close file
2018-12-25T12:39:50.012281002Z 67 PC: 12b48 | Get or set file attributes
2018-12-25T12:39:50.022117248Z 26 PC: 12c7b | Set disk transfer address