high
Summary
Summary
Action- More Information
| How it spreads |
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|---|---|
| Affected operating systems | Windows |
| Characteristics |
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| Protection available since | 18 October 2005 03:46:28 (GMT) |
| Last updated | 21 October 2005 17:04:38 (GMT) |
| Detected by | All Sophos products |
Sophos beta program
- Endpoint Security and Control 9.0
- Small business solutions 4.0
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
More Information
W32/Codbot-AF is a worm and IRC backdoor Trojan for the Windows platform.
W32/Codbot-AF spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012) and IMAIL Server.
W32/Codbot-AF runs continuously in the background, providing a backdoor server which allows a remote intruder to gain access and control over the computer via IRC channels. The worm contains functionality to download, install and run new software.
When first run W32/Codbot-AF copies itself to <System>\hpsys.exe and creates the file <Temp>\terminate.bat. Terminate.dat is a harmless file.
The file hpsys.exe is registered as a new system driver service named "Hpsys", with a display name of "hp service" and a startup type of automatic, so that it is started automatically during system startup. Registry entries are created under:
HKLM\SYSTEM\CurrentControlSet\Services\Hpsys\
Patches for the operating system vulnerabilities exploited by W32/Codbot-AF can be obtained from Microsoft at:
MS04-011
MS04-012
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