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Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Clippo.A
Technical name:Vbs/Clippo.A.worm
Threat level:Medium

It prevents users from opening Office files (Word, Excel, PowerPoint, Outlook), as it puts a password in order to access them. It spreads through the folders of the system, the mapped and removable drives making copies of itself in them.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:Aug. 30, 2010
Detection updated on:Sept. 3, 2010

Brief Description 


Clippo.A is a worm that carries out annoying actions for the users, as it puts a password to all the Office documents it finds in the computer and even in the removable drives, so that users cannot open them.

This way users will have to enter a password when they want to open Word or Excel documents, PowerPoint presentations or Outlook emails.

Unlike other similar malware samples, the purpose of this worm is not to obtain financial gains but just to annoy users, as it does not request any rescue for providing the password.

Clippo.A spreads through the folders of the system, the mapped and the removable drives, making copies of itself in them.

Visible Symptoms 


Clippo.A is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.