Overall Risk Level: 
W32.Pilleuz is a worm that may open a backdoor on compromised computer and access local files, download files, execute commands, perform Denial of Service Attacks, modify Hosts file and steal web browsers information. W32.Pilleuz propagate via file-sharing networks and instant messaging software.
Alias: -
Damage Level: Low
Systems Affected: Windows
1. Temporarily Disable System Restore (Windows Me/XP). [how to]
2. Update the virus definitions.
3. Reboot computer in SafeMode [how to]
4. Run a full system scan and clean/delete all infected file(s)
5. Delete/Modify any values added to the registry. [how to edit registry]
Navigate to and delete the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current Version\Winlogon\”Taskman” = “%SystemDrive%\RECYCLER\[SID]\sysdate.exe”
6. Exit registry editor and restart the computer.
7. In order to make sure that threat is completely eliminated from your computer, carry out a full scan of your computer using AntiVirus and Antispyware Software. Another way to delete the virus using various Antivirus Program without the need to install can be done with Online Virus Scanner.
Tags: symantec
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