Trojan-Downloader:W32/Oficla.AE

Classification

Malware

Trojan-Downloader

W32

Trojan-Downloader:W32/Oficla.AE, Gen:Variant.Bredo.4, Packed.Win32.Krap.an, TrojanDropper:Win32/Oficla (Microsoft), Win32/Oficla.GQ (Other) Mal/EncPk-NS (Sophos)

Summary

Trojan-Downloader:W32/Oficla.AE is distributed as an attachment to fake email messages; once installed, the trojan-downloader connects to a remote server.

Removal

Automatic action

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.

Suspect a file is incorrectly detected (a False Positive)?

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.

Find out more

Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

Contact Support

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

Propagation

Oficla.AE is distributed as executable or zipped files attached to misleading email messages. Some of the most common messages used to deliver this trojan involve fake offers for iTunes Gift certificates or for Amazon.com orders; other attachments are disguised as resumes.The text in the email message entices the unsuspecting user to launch the attached file, which installs and executes the trojan.

Installation

Once the attached executable file is launched, the trojan creates the following files:

  • %Temp%\1.tmp
  • %System%\pgsb.lto

It also makes changes to the Windows Registry to ensure the installed copy is launched when the computer is started up.

Activity

Once installed on the computer, the trojan opens a connection to a remote server, from which it may download additional malicious programs.