high
Summary
Summary
Action- More Information
| Detected by | All Sophos products |
|---|---|
Free virus scan
- Free virus, spyware, and adware scan
- Test your existing anti-virus protection
- Find threats your anti-virus missed
Action
- Summary
- Action
- More Information
Please follow the instructions for removing Trojans.
More Information
Troj/Sdbot-BV is a backdoor Trojan which allows a remote intruder to gain access and control over the computer via IRC channels. When first run the Trojan copies itself to the Windows System folder as anqmfn.exe and creates the following registry entries, so that anqmfn.exe is run automatically each time Windows is started:
HKLM\Software\Microsoft\Windows\CurrentVersion\ Run\avqra = %SYSTEM%\anqmfn.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\ RunServices\avqra = %SYSTEM%\anqmfn.exe
Each time the Trojan is run it tries to connect to an IRC server and join a specific channel. The Trojan then runs continuously in the background as a service process, listening on the IRC channel for specific commands and carrying out the appropriate actions.
The Trojan may arrive as part of a self-extracting archive which drops both Troj/Sdbot-BV and Troj/Ranck-C to the Windows System folder as FQGB.EXE and NFQG.EXE respectively and then runs them (see also description for Troj/Ranck-C).
|
