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Lager.DP is a mass mailing worm that drops a copy of Small.DAM.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
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 updates
First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.
Submit a sample
After 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 scanning
If 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.
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Submit a file or URL for further analysis.
Lager.DP arrives on the system as an attachment to spam emails.
When executed, Lager.DP drops a copy of itself named "alsys.exe" in the Windows system directory.
It also drops several files in various locations on the system using a random eight character filename.
In addition to this, it drops and executes a randomly named copy of Small.DAM in the current directory.
It also adds the following registry entries to enable its automatic execution upon system Startup:
Lager.DP propagates by mailing itself to several email addresses gathered from the affected system.
It may use any of the following string as its Subject:
Attachments may be any of the following filenames: