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Malware compromising BIOS and other September virus events

03

Oct

2011

September 2011 was relatively quiet and did not bring any major burst of viral activity; apparently, malware makers, back from summer vacation, decided to devote themselves to more pragmatic pursuits. However, the month did see the discovery of a Trojan horse of unique architecture capable of infecting BIOS. Also a new backdoor for Mac OS […]

Category General Written by Virus alerts 0 Comments

Anatomy of Bamital: A Prevalent Click-fraud Trojan

14

Sep

2011

(Note: This blog was written on September 2. We decided to postpone publishing it due to an ongoing joint effort to shut down servers and block domain names. The variant studied is not the latest but accurately reflects the functionalities of the threat.) Trojan.Bamital appeared in the summer of 2010. The threat really became prevalent […]

Category General Written by Symantec Security Response Blog 0 Comments

Xpaj Botnet Intercepts up to 87 Million Searches per Year

26

Aug

2011

W32.Xpaj.B is one of the most complex and sophisticated file infectors Symantec has encountered. In an older blog post, Piotr Krysiuk calls it an “upper crust file infector.” He describes several different approaches that the infector uses to increase the difficulty in detecting infected samples. The techniques W32.Xpaj.B uses to conceal itself within an executable […]

Category General Written by Symantec Security Response Blog 0 Comments

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Anatomy of Bamital: A Prevalent Click-fraud Trojan

Xpaj Botnet Intercepts up to 87 Million Searches per Year

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