| Alias: | |
| Strain: | - |
| detected when: | |
| where: | |
| Classification: | Master-boot record (HD) infector, DBR (Floppy)- infector, re |
| Length: | 1 kilobyte(s) |
Preconditions | |
| Operating System(s): | MS-DOS |
| Version/Release: | None |
| Computer model(s): | PC's |
| Caroname: | QRRY |
Attributes | |
| Easy identification: | |
Type of Infection: | Bootsector infection. Selfrec in memory: None Selfrec on disk: bootrec[0]==EBh & bootrec[0170h]==ABCDh |
| Infection Technique: | |
| Infection Trigger: | INT 13h & AX==0201h & CX=0001h |
| Storage Media affected: | Harddisks, Disketts |
| Interrupts hooked: | 13/0201 |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | |
| Encoding Method: | |
| Damage: | Transient: None Permanent: Overwrites the first nine sectors of the first threetracks on any disk or diskette head that's read from. |
| Damage Trigger: | Transient: None Permanent: Real_Time_Clock_Month == 12 |
| Particularities: | The virus resides at the top of memory, reducing the BIOS memory size at 0000:0413. None Displayed text: None Not displayed text: None Simple MBR infector with rather nasty damage; "QRRY" is justsome ASCII that happens to appear in the code of the virus. |
| Similarities: | None |
Agents | |
| Countermeasures: | |
| Standard means: | |
Acknowledgements | |
| Location: | Virus Test Center, University Hamburg, FRG |
| Classification by: | David M. Chess, IBM |
| Documentation by: | David M. CHess, IBM |
| Date: | 1993-03-08 |
| Information Source: | Caroentry (autom.converter by S.Freitag) |
(c) 1996 Virus-Test-Center, University of Hamburg