W32/Agobot-BK is a network worm which also allows unauthorised remote access to the computer via IRC channels.
W32/Agobot-BK copies itself to network shares with weak passwords and attempts to spread to computers using the DCOM RPC and the RPC locator vulnerabilities.
These vulnerabilities allow the worm to execute its code on target computers with System level privileges. For further information on these vulnerabilities and for details on how to protect/patch the computer against such attacks please see Microsoft security bulletins MS03-026 and MS03-001.
W32/Agobot-BK copies itself to the Windows system folder as CSRRS.EXE and may add to the following registry entries to run itself on system restart:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
Each time W32/Agobot-BK is run it attempts to connect to a remote IRC server and join a specific channel.
W32/Agobot-BK attempts to terminate various processes related to anti-virus and security software (e.g. SWEEP95.EXE, BLACKICE.EXE and ZONEALARM.EXE).