Threat Descriptions

Hanko

Classification

Category :

Malware

Type :

Virus

Platform :

-

Aliases :

Hanko, Monica

Summary

This is a resident and stealth virus, infecting COM and EXE files when they are accessed.

The virus uses several levels of encryption with a 64-bit key to run a random data generation routine. It also uses anti-debugging and other tricks to hide its code.

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

Hanko activates on July 7th at 7:07. At this time it displays this text and halts the computer: 

My name is Monica. I'm your new virus. If you are a
 programmer, you can try to decode the author's info, that is
 encrypted somewhere in my body. The decryption routine is also
 implemented. You must only guess the key ... Good luck,
 friend. Now I stopped the computer. Press RESET, please.

There really is encrypted text in the middle of the virus code. This text is encrypted with 64-bit crypto-algorithm with an unknown key. After decryption this text reads: 

Hi! You are really very good. So: My name is Michal Hanko, I'm
 from Czech Republic. I live in Letovice, Halasova street in
 Southern Moravia near Brno. My email is: hanko@math.muni.cz.
 Please, mail me that you've been succesful.
 Copyright (c) Majkl soft.