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 | 7 January 2005 13:26:41 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Check your administrator passwords and review network security.
You will also need to edit the following registry entries, if they are present. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
and remove any reference to any file you deleted.
Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:
HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\
and remove any reference to any file you deleted.
Close the registry editor.
More Information
W32/Sdbot-TE is a Windows worm that spreads via network shares with weak passwords. When run the worm creates backdoor functions that allow a remote intruder access into the computer via IRC channels while running in the background as a process.
The worm also copies itself to the the Windows System folder with the filename saskatcw.exe.
W32/Sdbot-TE creates the following registry entries so as to run itself on user logon:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Syntax Script
saskatcw.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Syntax Script
saskatcw.exe
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Syntax Script
saskatcw.exe
The worm also attempts to copy gahztil.exe to network shares.
When instructed by a remote attacker, W32/Sdbot-TE attempts to download files from the internet and run them.
Sophos's anti-virus products include proactive protection technology, which can defend against new threats without requiring an update. Sophos customers have been protected against W32/Sdbot-TE (detected as W32/Sdbot-Fam) since version 3.89.
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