Threat Description



Aliases: Utter, TrojanDropper.DOS.Utter
Category: Malware
Type: Virus
Platform: W32


F-Secure Anti-Virus detects a third party installation package as TrojanDropper.DOS.Utter as it was used to spread infected files in the past. But there exist a few innocent files packed with this installation package that are detected as well (for example a Mario game that is 66055 bytes long).

The original infected installation package size was 341211 bytes and it contained Win32.HLLP.Yai virus.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.


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