Summary
This is a trojan written in Delphi. The original filename is SLIDESCR.EXE. When executed under Windows 95 it blocks task manager and opens a messagebox with the following text:
Slider 1.0 Oops, looks like somebody doesn't like you very much ! You have to finish this sliding tile puzzle before you can continue whatever it is you're doing ! Use the cursor keys to move the pieces (black piece is the empty one).
Removal
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 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.
Technical Details
After 'OK' is pressed the trojan splits Windows desktop into several parts, mixes them and waits for the user to restore the original desktop by solving the sliding tile puzzle. It also swaps functions of cursor keys: 'Up' becomes 'Down', 'Left' becomes 'Right' and that makes solving the puzzle more difficult. There's no way to continue working with other Windows applications until you complete the puzzle.
Under Windows NT the task manager is not blocked by the trojan and the puzzle task could be killed.
If the trojan is executed from DOS session (full screen mode) the desktop data is not acquired correctly and the puzzle parts are blank. This happens because the desktop image is acquired by the trojan before Windows switches from DOS screen to its desktop.
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