Summary
Small.QP copies itself to the Windows folder and attempts to download and install other malware to the system.
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
Upon execution, this malware creates the mutex _Win_Loader_ to ensure that only one instance of itself is running in memory.Additionally, it drops the following files in the affected system:
- %windir%\winlogon32.exe - A copy of itself (Detected as Trojan-Dropper.Win32.Small.qp)
- %windir%\winlogon32.dll - Another malware file (Detected as Trojan-Downloader.Win32.Small.anj)
- %windir%\prefoct.dat - An empty file
As a stealth mechanism, it loads the dropped DLL, winlogon32.dll, under the legitimate process: lsass.exe.Trojan-Downloader.Win32.Small.anj, on the other hand, creates the mutex _Win_Loader__Win_Loader_. This malware attempts to connect to the following web sites to possibly download other malicious components:
- https://www.max-stats.com/l/[REMOVED].php?i=21 Data downloaded is saved in the file, %windir%\prefoct.dat
- https://www.teen4-sex.com/[REMOVED].dat Data downloaded is saved in the file, %wndir%\_tmp0232.exe
Small.QP then executes the downloaded file, _tmp0232.exe. Note: Both download sites are unavailable at the time of writing.
More Support
Community
Ask questions in our Community.
User guides
Check the user guide for instructions.
Contact Support
Chat with with or call an agent.
Submit a Sample
Submit a file or URL for analysis.