| Alias: | |
| Strain: | Cossiga (883 strain) |
| detected when: | |
| where: | |
| Classification: | EXE-infector |
| Length: | 883 |
Preconditions | |
| Operating System(s): | MS-DOS |
| Version/Release: | read-only files are not infected |
| Computer model(s): | PC's |
| Caroname: | Cossiga.883.A |
Attributes | |
| Easy identification: | |
Type of Infection: | The virus appends itself to the files Selfrec on disk: File[EOF-Virus_size][0..7] == Virus[0..7] (1E 0E 1F 50 06 BF 70 03) |
| Infection Technique: | |
| Infection Trigger: | IF Volume_label[0..3] != "AEGE" THENCount subdirectories of the root,IF (x=(Day_of_Month & Subdir_count)%256 != 0) THEN infect inroot_subdir #x ELSE infect in current dir. (search "normal" attribute) |
| Storage Media affected: | |
| Interrupts hooked: | |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | - |
| Encoding Method: | |
| Damage: | Transient: Write MSG_DISPLAYED: to the screen and terminate Permanent: - |
| Damage Trigger: | Transient: (Date >= October_11th) || (Year >= 1992) Permanent: - |
| Particularities: | The virus is not memory resident. If (CS: == DS: ) terminate instead of exit into host Displayed text: "COSSIGA ?! NO GRAZIE!By Amissi dee Panoce (c) 1991 PADOVA"; Encrypted Not displayed text: "AEGE/B V 1.2"; Encrypted while searching for infectable files in the target directory thefiles are counted each time to increment the directory pointer(i.e. FS_First followed by FS_Next (X-1 times) in order to findfile #X, for each file searched. |
| Similarities: | |
Agents | |
| Countermeasures: | |
| Standard means: | |
Acknowledgements | |
| Location: | Virus Test Center, University Hamburg, FRG |
| Classification by: | Adam David, Frisk Software International |
| Documentation by: | Adam David, Frisk Software International |
| Date: | 28.7.93 |
| Information Source: | Caroentry (autom.converter by S.Freitag) |
(c) 1996 Virus-Test-Center, University of Hamburg