Threat Descriptons



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Backdoor:OSX/Olyx.A connects to a remote server to receive further instructions, without knowledge or permission from the user.


The F-Secure security product will automatically remove the file.

  1. Open Activity Monitor, select startp and click Quit Process
  2. Open Terminal then execute the following:
    • sudo rm -f /Library/Application Support/google/startp
    • sudo rm -f ~/Library/LaunchAgents/
    • sudo rm -f /tmp/google.tmp

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

On installation, the malware drops and executes the following:

  • /Library/Application Support/google/startp

This component connects to a hard-coded IP address (located in Korea) to get additional commands.


The following launchpoint is created for the dropped file:

  • ~/Library/LaunchAgents/

The trojan also replace the following file with a copy of itself:

  • /tmp/google.tmp
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