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Summary
Summary
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| How it spreads |
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|---|---|
| Affected operating systems | Windows |
| Protection available since | 1 November 2005 04:25:24 (GMT) |
| Detected by | All Sophos products |
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Action
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W32/Rbot-ATY is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ATY spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049) (CAN-2003-0812), PNP (MS05-039) and ASN.1 (MS04-007) and by copying itself to network shares protected by weak passwords.
W32/Rbot-ATY 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.
When first run W32/Rbot-ATY copies itself to <System>\ntkernell32.exe.
The following registry entries are created to run ntkernell32.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
AdobeReaderPro
ntkernell32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
AdobeReaderPro
ntkernell32.exe
The following registry entry is set:
HKCU\Software\Microsoft\OLE
AdobeReaderPro
ntkernell32.exe
W32/Rbot-ATY includes functionality to:
- access the internet and communicate with a remote server via HTTP
- steal information
- carry out DDoS attacks
- terminates anti-virus and security related processes
The following patches for the operating system vulnerabilities exploited by W32/Rbot-ATY can be obtained from the Microsoft website:
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