high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
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| Protection available since | 15 September 2004 10:06:02 (GMT) |
| Detected by | All Sophos products |
Sophos beta program
- Endpoint Security and Control 9.0
- Small business solutions 4.0
Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Check your administrator passwords and review network security.
Change any data that may have become compromised.
Download and install the Microsoft patches mentioned above.
You will also need to edit the following registry entries, if they are present. Please read the warning about editing the registry.
At the taskbar, click Start|Run. Type 'Regedit' and press Return. The registry editor opens.
Before you edit the registry, you should make a backup. On the 'Registry' menu, click 'Export Registry File'. In the 'Export range' panel, click 'All', then save your registry as Backup.
Locate the HKEY_LOCAL_MACHINE entries:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run
HKLM\Software\Microsoft\Windows\CurrentVersion\RunServices
and remove any reference to any file you deleted.
Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entry:
HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\
and remove any reference to any file you deleted.
Close the registry editor.
More Information
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.
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