Threat description
Details
This is large family or loosely-related viruses from Italy. They all contain a reference to 'Grog' in internal texts. Sizes of the viruses range from 200 to over 2000 bytes.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
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Earlier variants infect only COM files. Later ones are resident, infect COM and EXE files and employ encyrption.
There is a wide variety of texts contained within the variants.
Grog viruses are not common outside Italy.
In February 1996 there were over 50 different Grog variants.
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