Sample viewer

vx.netlux.org/Virus.DOS.CyberTech.1036

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:50:57.42914031Z 48 PC: 12a98 | Get DOS version
2018-12-17T22:50:57.431699846Z 54 PC: 12aa6 | Get free disk space
2018-12-17T22:50:57.440804111Z 42 PC: 12ab2 | Get date 0x12ab2: cmp cx, 0x7ca
0x12ab6: jae 0x12abb
0x12ab8: jmp 0x12b4c
0x12abb: push cs
0x12abc: pop ds
0x12abd: mov ah, 9
0x12abf: lea dx, word ptr [bp + 0x264]
0x12ac3: int 0x21
0x12ac5: mov ah, 0x1a
0x12ac7: mov dx, 0xfd00
0x12aca: int 0x21
0x12acc: mov ax, word ptr cs:[0x2c]
0x12ad0: mov ds, ax
0x12ad2: mov si, 0
0x12ad5: mov cx, 0x4000
0x12ad8: lodsb al, byte ptr [si]
0x12ad9: cmp al, 1
0x12adb: je 0x12adf
0x12add: loop 0x12ad8
0x12adf: inc si
2018-12-17T22:50:57.444174307Z 9 PC: 12ac5 | Display string (Could not find end pointer)
2018-12-17T22:50:57.465769087Z 26 PC: 12acc | Set disk transfer address
2018-12-17T22:50:57.467418169Z 67 PC: 12afc | Get or set file attributes
2018-12-17T22:50:57.474902045Z 67 PC: 12b09 | Get or set file attributes
2018-12-17T22:50:57.490622804Z 61 PC: 12b0e | Open file (Filename = 'A:\TEST.COM')
2018-12-17T22:50:57.498786567Z 87 PC: 12b15 | Get or set file date and time
2018-12-17T22:50:57.500723722Z 62 PC: 12b1b | Close file
2018-12-17T22:50:57.502512667Z 60 PC: 12b24 | Create or truncate file
2018-12-17T22:50:57.518967738Z 64 PC: 12b33 | Write file or device (Write 4 bytes on handle 5)
2018-12-17T22:50:57.527289226Z 87 PC: 12b3a | Get or set file date and time
2018-12-17T22:50:57.528806054Z 62 PC: 12b3e | Close file
2018-12-17T22:50:57.537393737Z 67 PC: 12b47 | Get or set file attributes
2018-12-17T22:50:57.547368891Z 26 PC: 12c6f | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1995,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":10382,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:27:52.299585877Z 48 PC: 12a98 | Get DOS version
2018-12-25T12:27:52.301694092Z 54 PC: 12aa6 | Get free disk space
2018-12-25T12:27:52.332672409Z 42 PC: 12ab2 | Get date 0x12ab2: cmp cx, 0x7ca
0x12ab6: jae 0x12abb
0x12ab8: jmp 0x12b4c
0x12abb: push cs
0x12abc: pop ds
0x12abd: mov ah, 9
0x12abf: lea dx, word ptr [bp + 0x264]
0x12ac3: int 0x21
0x12ac5: mov ah, 0x1a
0x12ac7: mov dx, 0xfd00
0x12aca: int 0x21
0x12acc: mov ax, word ptr cs:[0x2c]
0x12ad0: mov ds, ax
0x12ad2: mov si, 0
0x12ad5: mov cx, 0x4000
0x12ad8: lodsb al, byte ptr [si]
0x12ad9: cmp al, 1
0x12adb: je 0x12adf
0x12add: loop 0x12ad8
0x12adf: inc si
2018-12-25T12:27:52.335725688Z 9 PC: 12ac5 | Display string (Could not find end pointer)
2018-12-25T12:27:52.366773401Z 26 PC: 12acc | Set disk transfer address
2018-12-25T12:27:52.377655583Z 67 PC: 12afc | Get or set file attributes
2018-12-25T12:27:52.384750475Z 67 PC: 12b09 | Get or set file attributes
2018-12-25T12:27:52.403297605Z 61 PC: 12b0e | Open file (Filename = 'A:\TEST.COM')
2018-12-25T12:27:52.415598593Z 87 PC: 12b15 | Get or set file date and time
2018-12-25T12:27:52.417298651Z 62 PC: 12b1b | Close file
2018-12-25T12:27:52.419427446Z 60 PC: 12b24 | Create or truncate file
2018-12-25T12:27:52.434322331Z 64 PC: 12b33 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:27:52.438816801Z 87 PC: 12b3a | Get or set file date and time
2018-12-25T12:27:52.441067194Z 62 PC: 12b3e | Close file
2018-12-25T12:27:52.458556765Z 67 PC: 12b47 | Get or set file attributes
2018-12-25T12:27:52.47800896Z 26 PC: 12c6f | Set disk transfer address

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":10382,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:27:52.40296777Z 48 PC: 12a98 | Get DOS version
2018-12-25T12:27:52.40911782Z 54 PC: 12aa6 | Get free disk space
2018-12-25T12:27:52.419201839Z 42 PC: 12ab2 | Get date 0x12ab2: cmp cx, 0x7ca
0x12ab6: jae 0x12abb
0x12ab8: jmp 0x12b4c
0x12abb: push cs
0x12abc: pop ds
0x12abd: mov ah, 9
0x12abf: lea dx, word ptr [bp + 0x264]
0x12ac3: int 0x21
0x12ac5: mov ah, 0x1a
0x12ac7: mov dx, 0xfd00
0x12aca: int 0x21
0x12acc: mov ax, word ptr cs:[0x2c]
0x12ad0: mov ds, ax
0x12ad2: mov si, 0
0x12ad5: mov cx, 0x4000
0x12ad8: lodsb al, byte ptr [si]
0x12ad9: cmp al, 1
0x12adb: je 0x12adf
0x12add: loop 0x12ad8
0x12adf: inc si
2018-12-25T12:27:52.422464554Z 26 PC: 12b53 | Set disk transfer address
2018-12-25T12:27:52.424790251Z 78 PC: 12b5d | Find first file
2018-12-25T12:27:52.432933613Z 67 PC: 12b6a | Get or set file attributes
2018-12-25T12:27:52.439173533Z 67 PC: 12b72 | Get or set file attributes
2018-12-25T12:27:52.458387856Z 61 PC: 12b77 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:27:52.466256638Z 87 PC: 12b7d | Get or set file date and time
2018-12-25T12:27:52.467733861Z 63 PC: 12b8a | Read file or device (Read 4 bytes on handle 5)
2018-12-25T12:27:52.475450589Z 66 PC: 12bb0 | Move file pointer
2018-12-25T12:27:52.478069626Z 66 PC: 12bd1 | Move file pointer
2018-12-25T12:27:52.479569299Z 63 PC: 12bdb | Read file or device (Read 52 bytes on handle 5)
2018-12-25T12:27:52.482202542Z 66 PC: 12bb0 | Move file pointer (See above)
2018-12-25T12:27:52.484103133Z 44 PC: 12c28 | Get time 0x12c28: cmp dl, 0
0x12c2b: jne 0x12c2f
0x12c2d: jmp 0x12c24
0x12c2f: mov byte ptr cs:[bp + 0x17], dl
0x12c33: lea si, word ptr [bp + 4]
0x12c36: mov di, 0xfb00
0x12c39: mov cx, 0x17
0x12c3c: rep movsb byte ptr es:[di], byte ptr [si]
0x12c3e: lea si, word ptr [bp + 0x1b]
0x12c41: mov cx, 0x3f5
0x12c44: lodsb al, byte ptr [si]
0x12c45: xor al, dl
0x12c47: stosb byte ptr es:[di], al
0x12c48: loop 0x12c44
0x12c4a: mov ah, 0x40
0x12c4c: mov dx, 0xfb00
0x12c4f: mov cx, 0x40c
0x12c52: int 0x21
0x12c54: mov ax, 0x4200
0x12c57: call 0x22baa
2018-12-25T12:27:52.487924297Z 64 PC: 12c54 | Write file or device (Write 1036 bytes on handle 5)
2018-12-25T12:27:52.497807129Z 66 PC: 12bb0 | Move file pointer (See above)
2018-12-25T12:27:52.500568951Z 64 PC: 12c65 | Write file or device (Write 4 bytes on handle 5)
2018-12-25T12:27:52.508412604Z 87 PC: 12c95 | Get or set file date and time
2018-12-25T12:27:52.509987482Z 62 PC: 12c99 | Close file
2018-12-25T12:27:52.524857984Z 67 PC: 12ca2 | Get or set file attributes
2018-12-25T12:27:52.533062157Z 26 PC: 12c6f | Set disk transfer address