high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
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| Protection available since | 22 August 2005 13:55:21 (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.
More Information
W32/Rbot-ALF is a worm and IRC backdoor Trojan for the Windows platform.
W32/Rbot-ALF spreads:
- to other network computers infected with Troj/Kuang, Troj/Sub7, Troj/NetDevil, W32/MyDoom, W32/Bagle and Troj/Optix
- to other network computers by exploiting common buffer overflow vulnerabilites, including: LSASS (MS04-011), RPC-DCOM (MS04-012), WebDav (MS03-007), IIS5SSL (MS04-011) (CAN-2003-0719), MSSQL (MS02-039) (CAN-2002-0649), UPNP (MS01-059) and Dameware (CAN-2003-1030)
- by copying itself to network shares protected by weak passwords
W32/Rbot-ALF spreads across networks with the filename DOZ.EXE.
W32/Rbot-ALF 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-ALF copies itself to the Windows system folder with a random 3-letter filename. The following registry entries are created to run the copy of itself on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Windows Standard Securty
<Worm filename>
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
Windows Standard Securty
<Worm filename>
The following registry entry is set:
HKCU\Software\Microsoft\OLE
Windows Standard Securty
<Worm filename>
W32/Rbot-ALF may log keystrokes to the file KEYLOG.DLL in the Windows system folder.
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