Summary
Trojan:OSX/Loosemaque.A appears to be a video game, but deletes files from the user home folder when a user plays it.
Removal
The F-Secure security product will automatically remove the file.
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
This malware is notable not only for being one of a relatively small handful of malware on one of the Macintosh platforms, it is also the only such trojan so far to use a game as its payload.
It is also unusual in that its developer specifically states its actions on the website where it is available, as well as on the splash screen of the game itself:
Execution
Trojan creates a folder containing game content, with the name lose lose folder.
On execution, users are able to play a Space Invaders look-a-like game (see screenshot below). When the user shoots an enemy character however, a file or folder in the user's home directory will be deleted.
If the user character is destroyed, the game ends. The Trojan subsequently sends the user's score to a remote server and deletes itself from the compromised computer.
Protect your devices from malware with F‑Secure Total
Protecting your devices from malicious software is essential for maintaining online security. F‑Secure Total makes this easy, helping you to secure your devices in a brilliantly simple way.
Award‑winning antivirus and malware protection
Online browsing, banking, and shopping protection
24/7 online identity and data breach monitoring
Unlimited VPN service to safeguard your privacy
Password manager with private data protection
Choose how many devices you want to protect to get started.
Free customer support
Cancel anytime
The trial does not obligate you to buy the product
After 30 days your subscription will renew automatically for one year at €69.99.
)
)
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.