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Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | March 2006 (4.03) |
| Protection available since | 3 November 2005 21:34:45 (GMT) |
| Last updated | 27 January 2006 03:13:48 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
More Information
W32/Rbot-AVP is a worm with IRC backdoor functionality for the Windows platform.
W32/Rbot-AVP 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.
The following patches for the operating system vulnerabilities exploited by W32/Rbot-AVP can be obtained from the Microsoft website:
MS04-011
MS04-012
MS03-049
MS05-039
MS04-007
W32/Rbot-AVP 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-AVP copies itself to <Windows system folder>\msnmsgr.exe.
The following registry entries are created to run msnmsgr.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
SN Messenger
msnmsgr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
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msnmsgr.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
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msnmsgr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
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msnmsgr.exe
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
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msnmsgr.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
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msnmsgr.exe
HKCU\Software\Microsoft\OLE
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msnmsgr.exe
HKLM\SOFTWARE\Microsoft\Ole
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msnmsgr.exe
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