W32/Rbot-AQY

Category: Viruses and Spyware
Type: Win32 worm
Prevalence: No Reports

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W32/Rbot-AQY is a worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-AQY spreads:

- to other network computers infected with: W32/MyDoom and W32/Bagle
- to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012) and WebDav (MS03-007)
- by copying itself to network shares protected by weak passwords

W32/Rbot-AQY 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-AQY copies itself to <System>\MrNo4236.exe.

The following registry entries are created to run MrNo4236.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Syga432te Pe432rsonal Firewall
MrNo4236.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Syga432te Pe432rsonal Firewall
MrNo4236.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Syga432te Pe432rsonal Firewall
MrNo4236.exe

Registry entries are set as follows:

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1