high
Summary
Summary
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| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
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| Protection available since | 29 November 2005 14:03:40 (GMT) |
| Detected by | All Sophos products |
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Action
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More Information
W32/Rbot-AYS is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AYS spreads to other network computers infected with: Troj/Kuang, Troj/Sub7, Troj/NetDevil, W32/MyDoom, W32/Bagle and Troj/Optix and 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) and Dameware (CAN-2003-1030).
W32/Rbot-AYS 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-AYS copies itself to <System>\syser.exe.
The following registry entries are created to run syser.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
boler.exe
syser.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
boler.exe
syser.exe
The following registry entry is set:
HKCU\Software\Microsoft\OLE
boler.exe
syser.exe
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