high
Summary
Summary
Action- More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| Included in our products from | September 2005 (3.97) |
| Protection available since | 8 July 2005 21:29:42 (GMT) |
| Detected by | All Sophos products |
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.
Each user has a registry area named HKEY_USERS\[code number indicating user]\. For each user locate the entries:
HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\Run\
HKU\[code number]\Software\Microsoft\Windows\
CurrentVersion\RunServices\
and remove any reference to any file you deleted.
Close the registry editor.
More Information
W32/Rbot-AHS is a network worm for the Windows platform.
W32/Rbot-AHS spreads through network shares protected by weak passwords and by exploiting the LSASS, RPC-DCOM, WKS, MSSQL and WINS vulnerabilities.
W32/Rbot-AHS 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-AHS copies itself to <Windows system folder>\taskmr.exe.
The following registry entries are created to run taskmr.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
TAKSMGN
taskmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
TAKSMGN
taskmr.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\RunServices
TAKSMGN
taskmr.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
TAKSMGN
taskmr.exe
Registry entries are set as follows:
HKCU\SYSTEM\CurrentControlSet\Control\Lsa
TAKSMGN
taskmr.exe
HKLM\SYSTEM\CurrentControlSet\Control\Lsa
TAKSMGN
taskmr.exe
HKCU\Software\Microsoft\OLE
TAKSMGN
taskmr.exe
HKLM\SOFTWARE\Microsoft\Ole
TAKSMGN
taskmr.exe
Patches for the operating system vulnerabilities exploited by W32/Rbot-AHS can be obtained from Microsoft at:
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