Sample viewer

vx.netlux.org/Virus.DOS.Leprosy.1992.b

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-17T22:20:50.876290729Z 48 PC: 13042 | Get DOS version
2018-12-17T22:20:50.877966382Z 44 PC: 1304a | Get time 0x1304a: mov byte ptr [0x103], dl
0x1304e: mov ah, 0x2a
0x13050: int 0x21
0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
2018-12-17T22:20:50.880207902Z 42 PC: 13052 | Get date 0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
0x1307a: cld
0x1307b: lodsb al, byte ptr [si]
0x1307c: cmp al, 0x20
2018-12-17T22:20:50.882552188Z 26 PC: 130d9 | Set disk transfer address
2018-12-17T22:20:50.884096398Z 25 PC: 130dd | Get default drive
2018-12-17T22:20:50.885448462Z 71 PC: 130e8 | Get current directory
2018-12-17T22:20:50.888413913Z 59 PC: 130ef | Change current directory
2018-12-17T22:20:50.893719546Z 78 PC: 130f9 | Find first file
2018-12-17T22:20:50.898612749Z 79 PC: 13105 | Find next file
2018-12-17T22:20:50.90075597Z 87 PC: 131e1 | Get or set file date and time
2018-12-17T22:20:50.90280301Z 67 PC: 131ed | Get or set file attributes
2018-12-17T22:20:50.910035291Z 59 PC: 131f4 | Change current directory
2018-12-17T22:20:50.92063108Z 59 PC: 131fb | Change current directory
2018-12-17T22:20:50.922546131Z 76 PC: 13200 | Terminate with return code (Return code = '0')

{"DateBased":true,"Day":1,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":3626,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T11:49:45.667656586Z 48 PC: 13042 | Get DOS version
2018-12-25T11:49:45.670145181Z 44 PC: 1304a | Get time 0x1304a: mov byte ptr [0x103], dl
0x1304e: mov ah, 0x2a
0x13050: int 0x21
0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
2018-12-25T11:49:45.679115152Z 42 PC: 13052 | Get date 0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
0x1307a: cld
0x1307b: lodsb al, byte ptr [si]
0x1307c: cmp al, 0x20
2018-12-25T11:49:45.685479661Z 26 PC: 130d9 | Set disk transfer address
2018-12-25T11:49:45.686847943Z 25 PC: 130dd | Get default drive
2018-12-25T11:49:45.689278108Z 71 PC: 130e8 | Get current directory
2018-12-25T11:49:45.6922369Z 59 PC: 130ef | Change current directory
2018-12-25T11:49:45.697292926Z 78 PC: 130f9 | Find first file
2018-12-25T11:49:45.703626268Z 79 PC: 13105 | Find next file
2018-12-25T11:49:45.705130696Z 87 PC: 131e1 | Get or set file date and time
2018-12-25T11:49:45.706447009Z 67 PC: 131ed | Get or set file attributes
2018-12-25T11:49:45.712464288Z 59 PC: 131f4 | Change current directory
2018-12-25T11:49:45.715385503Z 59 PC: 131fb | Change current directory
2018-12-25T11:49:45.717004125Z 76 PC: 13200 | Terminate with return code (Return code = '0')

{"DateBased":true,"Day":25,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":3626,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T11:49:45.689295103Z 48 PC: 13042 | Get DOS version
2018-12-25T11:49:45.690940003Z 44 PC: 1304a | Get time 0x1304a: mov byte ptr [0x103], dl
0x1304e: mov ah, 0x2a
0x13050: int 0x21
0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
2018-12-25T11:49:45.693605525Z 42 PC: 13052 | Get date 0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
0x1307a: cld
0x1307b: lodsb al, byte ptr [si]
0x1307c: cmp al, 0x20

{"DateBased":true,"Day":26,"Month":1,"Year":1980,"Hour":0,"Min":0,"Second":0,"TimeBased":false,"OriginalID":3626,"SideJobID":0}

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GIF

Syscalls:

Time Syscall Op Syscall Name
2018-12-25T11:49:45.71901769Z 48 PC: 13042 | Get DOS version
2018-12-25T11:49:45.721217806Z 44 PC: 1304a | Get time 0x1304a: mov byte ptr [0x103], dl
0x1304e: mov ah, 0x2a
0x13050: int 0x21
0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
2018-12-25T11:49:45.723604466Z 42 PC: 13052 | Get date 0x13052: cmp dl, 0x19
0x13055: jl 0x1305b
0x13057: cmp al, 5
0x13059: je 0x1305e
0x1305b: jmp 0x130d2
0x1305d: nop
0x1305e: mov si, 0x138
0x13061: mov ax, 0xb800
0x13064: mov es, ax
0x13066: mov di, 0
0x13069: mov cx, 0x504
0x1306c: call 0x13074
0x1306f: jmp 0x1306f
0x13071: jmp 0x130fe
0x13074: jcxz 0x130d1
0x13076: mov dx, di
0x13078: xor ax, ax
0x1307a: cld
0x1307b: lodsb al, byte ptr [si]
0x1307c: cmp al, 0x20
2018-12-25T11:49:45.726023779Z 26 PC: 130d9 | Set disk transfer address
2018-12-25T11:49:45.727755922Z 25 PC: 130dd | Get default drive
2018-12-25T11:49:45.729410261Z 71 PC: 130e8 | Get current directory
2018-12-25T11:49:45.732548365Z 59 PC: 130ef | Change current directory
2018-12-25T11:49:45.737160595Z 78 PC: 130f9 | Find first file
2018-12-25T11:49:45.741816779Z 79 PC: 13105 | Find next file
2018-12-25T11:49:45.743585715Z 87 PC: 131e1 | Get or set file date and time
2018-12-25T11:49:45.744747685Z 67 PC: 131ed | Get or set file attributes
2018-12-25T11:49:45.752914615Z 59 PC: 131f4 | Change current directory
2018-12-25T11:49:45.75687261Z 59 PC: 131fb | Change current directory
2018-12-25T11:49:45.758588099Z 76 PC: 13200 | Terminate with return code (Return code = '0')