high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Protection available since | 23 August 2005 23:58:49 (GMT) |
| Detected by | All Sophos products |
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Action
- Summary
- Action
- More Information
Please follow the instructions for removing worms.
Change any data that may have become compromised.
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-ALZ is a network worm with backdoor Trojan functionality for the Windows platform.
The worm copies itself to a file named emule.exe in the Windows system folder and creates the following registry entries:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
emule
emule.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
emule
emule.exe
HKLM\SOFTWARE\Microsoft\Ole
EnableDCOM
N
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
restrictanonymous
1
W32/Rbot-ALZ spreads using a variety of techniques including exploiting weak passwords on computers and SQL servers, exploiting operating system vulnerabilities (including LSASS, WKS and PNP) and using backdoors opened by other worms or Trojans.
W32/Rbot-ALZ can be controlled by a remote attacker over IRC channels. The backdoor component of W32/Rbot-ALZ can be instructed by a remote user to perform the following functions:
start an FTP server
start a Proxy server
start a web server
take part in distributed denial of service (DDoS) attacks
log keypresses
capture screen/webcam images
packet sniffing
port scanning
download/execute arbitrary files
start a remote shell (RLOGIN)
steal product registration information from certain software
Patches for the operating system vulnerabilities exploited by W32/Rbot-ALZ can be obtained from Microsoft at:
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