W32/Rbot-JM is a worm which attempts to spread to remote network shares. It also contains backdoor Trojan functionality, allowing unauthorised remote access to the infected computer via IRC channels while running in the background as a service process.
W32/Rbot-JM moves itself to the Windows system folder as windows.exe and creates the following registry entries to ensure it is run at system logon:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft IT Update = windows.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\
Microsoft IT Update = windows.exe
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices\
Microsoft IT Update = windows.exe
W32/Rbot-JM speads via network shares with weak passwords and by exploiting system vulnerabilities including the RPC DCOM (MS04-012), WebDav (MS03-007), LSASS (MS04-011) and DameWare (CAN-2003-1030) vulnerabilities.
W32/Rbot-JM can download and execute remote files on the infected computer, log key strokes, retrieve information such as CD keys for various games and flood other computers with network packets.
W32/Rbot-JM will create the file C:\debug.crf. This file is not malicious and can be deleted.