Sophos

W32/Rbot-QH

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Protection available since 22 November 2004 19:44:55 (GMT)
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Action

More Information

W32/Rbot-QH is an IRC backdoor Trojan and network worm.

W32/Rbot-QH may spread to remote network shares protected by weak passwords and computers vulnerable to common exploits. The worm also opens up a backdoor, allowing unauthorised remote access to infected computers via the IRC network, while running in the background as a service process.

W32/Rbot-QH copies itself to the Windows system folder and creates the following registry entries to run automatically on log-on:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Excell = "wuamngr32.exe"

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft Excell = "wuamngr32.exe"

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft Excell = "wuamngr32.exe"

In addition, W32/Rbot-QH may set the following entries if they are not already set:

HKLM\Software\Microsoft\Ole\
EnableDCOM = "N"

HKLM\System\ControlSet<number>\Control\Lsa\
restrictanonymous = 1

HKLM\System\CurrentControlSet\Control\Lsa\
restrictanonymous = 1

W32/Rbot-QH can receive commands from a remote intruder to delete network shares, log keypresses, participate in DDoS attacks, scan other computers for vulnerabilities, steal passwords, steal registration keys for computer games, terminate firewall and anti-virus applications and capture video from webcameras attached to the computer.

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