W32/Rbot-BJZ is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-BJZ can spread in the following ways:
- via network shares with weak passwords
- to other network computers infected with W32/MyDoom or W32/Bagle
- by exploiting common buffer overflow vulnerabilities, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WKS (MS03-049) (CAN-2003-0812), WebDav (MS03-007), Veritas (CAN-2004-1172) and ASN.1 (MS04-007).
W32/Rbot-BJZ 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-BJZ attempts to disable various security related applications.
When first run W32/Rbot-BJZ copies itself to <System>\taskmn.exe.
The following registry entries are created to run taskmn.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft sddcE Contol
taskmn.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Microsoft sddcE Contol
taskmn.exe
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
Microsoft sddcE Contol
taskmn.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1