Email-Worm:W32/Luder.A

Disinfection of the Luder virus-worm should be performed as follows:

• Disconnect a computer or local network from the Internet.
• Disable network sharing or set strong passwords for all shared computers.
• Select the "Disinfect Automatically" action for F-Secure Anti-Virus real-time scanners on all computers. With "Disinfect Automatically" selected, F-Secure Anti-Virus will disinfect files that a virus tries to infect over a network (if sharing was not disabled) or on local drives (if the virus is active in memory).
• Scan ALL files on all the computer drives and MANUALLY select the "Disinfect" action to disinfect all infected files and rename the virus droppers and downloaders. DO NOT select Automatic Cleaning option after the scan (see CAUTION below).
• Restart all disinfected computers.
• Scan all hard drives on disinfected computers again to make sure that no more infected files are left. If needed, repeat the disinfection procedure.
• Disinfect all infected computers connected to the network.
• Enable network sharing.
• Reconnect the disinfected computer or local network to the Internet.

Caution: Due to the "Email-Worm." detection prefix, F-Secure Anti-Virus will automatically suggest deletion of the infected files. DO NOT select the "Delete" option however, as this worm includes a viral component and the files it infects should be disinfected rather than deleted. At the same time, the worm's dropper and downloader files should be deleted from a computer to prevent its re-infection. See the names of the dropper and downloader files in the Details section.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

• Check for the latest database updatesFirst, check if your F-Secure security program is using the latest updates, then try scanning the file again.
• Submit a sampleAfter checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
• Exclude a file from further scanningIf you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.Note: You need administrative rights to change the settings.