| Alias: | --- |
| Strain: | 16 Bit Crew Virus strain |
| detected when: | --- |
| where: | --- |
| Classification: | system virus (bootblock), resident |
| Length: | 1. Length on storage medium: 1024 bytes 2. Length in RAM: 1024 bytes |
Preconditions | |
| Operating System(s): | AMIGA-OS |
| Version/Release: | all system releases |
| Computer model(s): | all models |
| Caroname: | 16_BitCrew.Zaccess1_0 |
Attributes | |
| Easy identification: | text visible in bootblock: "ZACCESS V1.0 / 1991" |
Type of Infection: | Self-identification method: Virus checks if the sum of two matchwords in the bootblock equals zeros; if yes, the virus assumes to have found itself on disk System infection: RAM resident, reset resident, bootblock |
| Infection Technique: | |
| Infection Trigger: | reset |
| Storage Media affected: | only floppy disks |
| Interrupts hooked: | DoIO vector of exec-library, CoolCapture |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | |
| Encoding Method: | |
| Damage: | Permanent damage: overwriting bootblock Transient damage: LED flashing (10 or 30 times) |
| Damage Trigger: | Permanent damage: reset Transient damage: depending on infection counter value and mouse button during boot |
| Particularities: | a resident program using the CoolCapture vector is shut down |
| Similarities: | --- |
Agents | |
| Countermeasures: | Virus Workshop V3.0, VirusChecker V6.33, VT 2.58, VirusZ 3.07 |
| Standard means: | VT 2.58, Virus Workshop V3.0 |
Acknowledgements | |
| Location: | Virus Test Center, University of Hamburg, Germany |
| Classification by: | Karim Senoucci |
| Documentation by: | Karim Senoucci |
| Date: | 14-December-1993 |
| Information Source: | Virus analysis |
(c) 1996 Virus-Test-Center, University of Hamburg