Posts Tagged: Trojan-Backdoor-TDSS


Spammed Trojan Won’t Run Under Windows XP

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While it is far from the first Trojan ever to simply fail to execute under Windows XP, it definitely caught our eye that a variant of Trojan-Downloader-Tacticlol distributed last week in a spam campaign only fully executed under Windows Vista or newer operating systems. It may have been just a fluke, but repeated tests with both a virtual machine and real hardware running Windows XP at various patch levels showed that the Trojan we received attached to a spam message simply quit when executed in an XP environment, but ran smoothly and did all its planned dirty work on a […]

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A Look Back at the Worst Infections of 2009

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It’s not clear whether the past year will go down in history as a particularly bad year for malware, but one thing is certain: It was bad enough, at times, that fighting infections and cleaning PCs took priority over virtually all other work. Neither home users nor businesses were immune from wave after wave of increasingly nasty malware tricks, though there were a few bright spots: A fix issued by Microsoft mid-year meant that worms are far less likely to be able to spread using portable storage like thumbdrives or digital photo frames; A corresponding dropoff in overall worm detections […]

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