| Alias: | |
| Strain: | - |
| detected when: | |
| where: | |
| Classification: | COM-infector |
| Length: | 406 (INCLUDING 3 GARBAGE BYTES AT THE END, SEE COMMENTS: ) |
Preconditions | |
| Operating System(s): | MS-DOS |
| Version/Release: | DOS >= 3 |
| Computer model(s): | PC's |
| Caroname: | EMF.404 |
Attributes | |
| Easy identification: | |
Type of Infection: | The virus appends itself to the files Selfrec on disk: Filetime_seconds == 60 |
| Infection Technique: | |
| Infection Trigger: | Search current directory (including system/hidden) |
| Storage Media affected: | |
| Interrupts hooked: | 24 |
| Stealth: | |
| Tunneling/Selfprot: | |
| Oligo/Polymorphism: | - |
| Encoding Method: | |
| Damage: | Transient: - Permanent: - |
| Damage Trigger: | Transient: - Permanent: - |
| Particularities: | The virus is not memory resident. Interrupt port 21h bit 1 is not cleared if the virus exitsbecause of DOS < 3. Not displayed text: "Screaming Fist (c)1" The last 3 bytes of the original virus are now missing, thoughthe encryption routine still decrypts and encrypts them. It is thelast 3 bytes of MSG_NOT_DISPLAYED: |
| 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