W32/Rbot-AIK

Please follow the instructions for removing worms.

W32/Rbot-AIK is an internet worm and IRC backdoor Trojan for the Windows platform.

W32/Rbot-AIK spreads to other network computers by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049), WebDav (MS03-007), IIS5SSL (MS04-011), MSSQL (MS02-039), UPNP (MS01-059), Veritas (CAN-2004-1172) and Dameware (CAN-2003-1030) and by copying itself to network shares protected by weak passwords.

W32/Rbot-AIK 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.

W32/Rbot-AIK includes functionality to:

- steal confidential information
- carry out DDoS flooder attacks
- silently download, install and run new software, including updates of its software
- disable other software, including anti-virus, firewall and security related applications

When first run W32/Rbot-AIK copies itself to <System>\Ati2xxx.exe.

The following registry entries are created to run Ati2xxx.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Motherboard Config
Ati2xxx.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Motherboard Config
Ati2xxx.exe

Registry entries are set as follows:

HKCU\Software\Microsoft\OLE
Motherboard Config
Ati2xxx.exe

HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N

HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1

The following patches for the operating system vulnerabilities exploited by W32/Rbot-AIK can be obtained from the Microsoft website:

MS04-011
MS04-012
MS03-049
MS03-007
MS02-039
MS01-059