high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
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| Protection available since | 5 June 2005 15:01:17 (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-AEV is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-AEV 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.
When first run W32/Rbot-AEV copies itself to <System>\dIlhost.exe.
W32/Rbot-AEV is capable of spreading to computers on the local network protected by weak passwords after receiving the appropriate backdoor command.
The following registry entries are created to run dIlhost.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Internal AntiVirus Systems
dIlhost.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Microsoft Internal AntiVirus Systems
dIlhost.exe
Registry entries are set as follows:
HKCU\Software\Microsoft\OLE
Microsoft Internal AntiVirus Systems
dIlhost.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
Sophos's anti-virus products include Genotype detection technology, which can proactively protect against new threats without requiring an update. Sophos customers have been protected against W32/Rbot-AEV (detected as W32/Rbot-Fam) since version 3.93.
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