| Alias: | --- |
| Strain: | --- |
| detected when: | 1990 |
| where: | Elmshorn, FRG |
| Classification: | System virus (bootblock), resident |
| Length: | 1. Length on storage medium: 1024 byte 2. Length in RAM : 1024 byte |
Preconditions | |
| Operating System(s): | AMIGA-DOS |
| Version/Release: | 1.2/33.166, 1.2/33.180 and 1.3/34.20 |
| Computer model(s): | AMIGA 500, AMIGA 1000, AMIGA 2000A, AMIGA 2000B |
| Caroname: | 16_BitCrew.Graffiti |
Attributes | |
| Easy identification: | Typical text: 'VIRUS! written by Graffiti' |
Type of Infection: | System infection: RAM resident, reset resident, bootblock |
| Infection Technique: | |
| Infection Trigger: | reset (CONTROL+Left-AMIGA+RIGHT-AMIGA), any disk access |
| Storage Media affected: | only floppy disks (3.5" and 5.25") |
| Interrupts hooked: | --- |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | |
| Encoding Method: | |
| Damage: | Permanent damage: overwriting bootblock Transient damage: screen buffer manipulation: screen becomes black, message 'VIRUS! written by Graffiti' is displayed; next, a Blitter demo is observed (LED flashing 30 times) |
| Damage Trigger: | Permanent damage: reset Transient damage: starting with 7th infection; LED flashing if left mouse button of Port 1 is not pressed, otherwise Blitter demo |
| Particularities: | Any resident program using the CoolCaptureVector is shut down; virus uses StartIOVector. |
| Similarities: | SCA strain |
Agents | |
| Countermeasures: | CHECKVECTORS 2.2,GUARDIAN 1.2,VIRUSX 4.0 |
| Standard means: | CHECKVECTORS 2.2 |
Acknowledgements | |
| Location: | Virus Test Center, University Hamburg, Germany |
| Classification by: | Wolfram Schmidt |
| Documentation by: | Wolfram Schmidt |
| Date: | 15-July-1991 |
| Information Source: | --- |
(c) 1996 Virus-Test-Center, University of Hamburg