W32/Rbot-AQV is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AQV 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) 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-AQV can be obtained from the Microsoft website:
MS04-011
MS04-012
MS03-049
MS04-007
W32/Rbot-AQV 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-AQV copies itself to <System>\iexpl0re.exe.
The following registry entries are created to run iexpl0re.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Micrsoft Internet Explorer
IEXPL0RE.EXE
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKCU\Software\Microsoft\OLE
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKLM\SOFTWARE\Microsoft\Ole
Micrsoft Internet Explorer
IEXPL0RE.EXE
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1