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| | Opasoft Is Back More Dangerous Than Ever |
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Categorie: Vulnerability
Posted: 2002-10-24 by ReCall
Views: 502
Source: Click here
| Current Rating: Not rated
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| | Details |
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Kaspersky Labs has detected a new modification of the network worm "Opasoft" (also known as "Opaserv" and "Brasil"). Kaspersky Labs has already recorded numerous registered infections.
The main distinctions marking this new "Opasoft" modification are that it is compressed with the UPX file packing utility and encrypted with the PCPEC utility. The result being the shortened length of the file bearing the worm and an altered external appearance, however, the worm's functionality has not changed. The new modification's actions almost fully correspond to those of the original version.
Kaspersky Anti-Virus is the only anti-virus program that protects computers from the new Opasoft modification without requiring an update of anti-virus database signatures.
Archive and compression utilities present considerable problems for modern computer virology. "This problem is one of the keys in the battle with new viruses. Virus authors have long known how to, without effort, outwit anti-virus software and thereby widely use compression and encryption methods", commented Eugene Kaspersky, Head of Anti-Virus Research at Kaspersky Labs - "Specifically to respond to this we decided to find a different path to defend users against each specific virus modification by supporting utilities used for encryption and compression."
Presently, Kaspersky Anti-Virus supports 671 different archived and compressed file formats, the largest amount amongst all anti-virus programs.
| | Links |
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Kaspersky Labs
Free Utility for Detecting and Deleting The Tanatos and Opasoft Internet Worms
More detailed information about the "Opasoft" worm and its new modified version can be found in The Kaspersky Virus Encyclopedia.
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