| Alias: | |
| Strain: | - |
| detected when: | |
| where: | |
| Classification: | DBR (Floppy)- infector, DBR (Harddisk)- infector , resident |
| Length: | 512 B |
Preconditions | |
| Operating System(s): | MS-DOS |
| Version/Release: | All models |
| Computer model(s): | PC's |
| Caroname: | WET |
Attributes | |
| Easy identification: | |
Type of Infection: | Bootsector infection. Selfrec on disk: [01AEh...01AFH] = 57h 2Eh |
| Infection Technique: | |
| Infection Trigger: | boot from an infected floppy disk, if residentread or write to a floppy disk in drive A: |
| Storage Media affected: | Disketts, Harddisks |
| Interrupts hooked: | 13h |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | - |
| Encoding Method: | |
| Damage: | Transient: - Permanent: - |
| Damage Trigger: | Transient: - Permanent: - |
| Particularities: | The virus resides at the top of memory, reducing the BIOS memory size at 0000:0413. Not displayed text: "- (C) 1990 W.E.T. -" In contrast to the 'normal' way WET don't decrement the(0:0413h) available memory, but defines the size ofconventional memory directly. The DOS CHKDSK commandindicates 638.976 bytes of conventional memory. |
| Similarities: | |
Agents | |
| Countermeasures: | |
| Standard means: | |
Acknowledgements | |
| Location: | Virus Test Center, University Hamburg, FRG |
| Classification by: | BSI (GISA) / V2, Hubert Schmitz |
| Documentation by: | BSI (GISA) / V2, Hubert Schmitz |
| Date: | 1995-01-04 |
| Information Source: | Caroentry (autom.converter by S.Freitag) |
(c) 1996 Virus-Test-Center, University of Hamburg