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Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | January 2006 (4.01) |
| Protection available since | 1 December 2005 09:07:54 (GMT) |
| Detected by | All Sophos products |
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
More Information
W32/Rbot-AZO is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AZO spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: WKS (MS03-049) (CAN-2003-0812) and ASN.1 (MS04-007).
W32/Rbot-AZO 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-AZO copies itself to <System>\clsas32.exe.
The following registry entries are created to run clsas32.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Windows System32
clsas32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows System32
clsas32.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Windows System32
clsas32.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows System32
clsas32.exe
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Windows System32
clsas32.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Windows System32
clsas32.exe
HKCU\Software\Microsoft\OLE
Windows System32
clsas32.exe
HKLM\SOFTWARE\Microsoft\Ole
Windows System32
clsas32.exe
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