W32/Rbot-AQP is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AQP 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), WKS (MS03-049) (CAN-2003-0812), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), UPNP (MS01-059), Veritas (CAN-2004-1172), Dameware (CAN-2003-1030) and ASN.1 (MS04-007).
W32/Rbot-AQP 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-AQP copies itself to <System>\om4r.exe.
The following registry entries are created to run om4r.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Update 32
om4r.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Update 32
om4r.exe
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
Microsoft Update 32
om4r.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
W32/Rbot-AQP may also attempt to terminate security related processes on an infected computer.