Sophos

W32/Rbot-QP

Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Network shares
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 28 November 2004 17:41:03 (GMT)
Detected by All Sophos products
  • Endpoint Security and Control 9.0
  • Small business solutions 4.0

Action

More Information

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

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

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
*windows update = wruaclt.exe

HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
*windows update = wruaclt.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
*windows update = wruaclt.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\
*windows update = wruaclt.exe

HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\
*windows update = wruaclt.exe

In addition, W32/Rbot-QP attempts to alter the following registry entries if they are not already set:

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

HKLM\SYSTEM\ControlSet001\Control\Lsa\
restrictanonymous = 1

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

W32/Rbot-QP 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 processes and capture video from webcameras attached to infested computers.

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