W32/Rbot-AUW is an internet worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AUW spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), UPNP (MS01-059), Dameware (CAN-2003-1030), PNP (MS05-039) and ASN.1 (MS04-007) and by copying itself to network shares protected by weak passwords.
W32/Rbot-AUW 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.
W32/Rbot-AUW includes functionality to:
- steal confidential information
- carry out DDoS flooder attacks
- silently download, install and run new software
When first run W32/Rbot-AUW moves itself to the Windows system folder using a random name and creates the following registry entries to ensure it is run at system logon:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
MICROSFT RAMA UPDATE SUPPORT
<random name>
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
MICROSFT RAMA UPDATE SUPPORT
<random name>
The following registry entry is set:
HKCU\Software\Microsoft\OLE
MICROSFT RAMA UPDATE SUPPORT
<random name>
The following patches for the operating system vulnerabilities exploited by W32/Rbot-AUW can be obtained from the Microsoft website:
<a href= "http://www.microsoft.com/technet/security/bulletin/MS04-011.mspx" target="_blank">MS04-011</a>
<a href= "http://www.microsoft.com/technet/security/bulletin/MS04-012.mspx" target="_blank">MS04-012</a>
<a href= "http://www.microsoft.com/technet/security/bulletin/MS03-007.mspx" target="_blank">MS03-007</a>
<a href= "http://www.microsoft.com/technet/security/bulletin/MS01-059.mspx" target="_blank">MS01-059</a>
<a href= "http://www.microsoft.com/technet/security/bulletin/MS05-039.mspx" target="_blank">MS05-039</a>
<a href= "http://www.microsoft.com/technet/security/bulletin/MS04-007.mspx" target="_blank">MS04-007</a>