high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Protection available since | 10 January 2006 21:52:41 (GMT) |
| Last updated | 26 August 2006 13:05:00 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
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.
Close the registry editor.
Check the following items
- To renable DCOM you can edit the registry, but it's better to use Dcomcnfg.exe. See Microsoft article 825750 for details.
- The HKLM\SYSTEM\CurrentControlSet\Control\Lsa\restrictanonymous = "1" setting does not allow enumeration of SAM accounts and names. The default is "0". It can be changed in Local Security Policy. See Microsoft article 246261 for details.
More Information
W32/Rbot-BJV is a network worm with backdoor functionality for the Windows platform.
W32/Rbot-BJV spreads using a variety of techniques including exploiting weak passwords on computers and exploiting operating system vulnerabilities (including DCOM-RPC, LSASS, WKS and ASN.1).
W32/Rbot-BJV can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-BJV can be instructed by a remote user to perform the following functions:
start an FTP server
start a Proxy server
take part in distributed denial of service (DDoS) attacks
log keypresses
port scanning
download/execute arbitrary files
start a remote shell (RLOGIN)
The worm copies itself to a file named mssvcc.exe in the Windows system folder and creates the following registry entries to run on system startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
msconfig38
mssvcc.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
msconfig38
mssvcc.exe
Registry entries are set as follows:
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
Patches for the operating system vulnerabilities exploited by W32/Rbot-BJV can be obtained from Microsoft at:
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