Posts Tagged: antivirus 2010


Karagany Isn’t a Doctor, but Plays One on Your PC

by

A Trojan that pulls a sly performance of now-you-see-me-now-you-don’t disguises itself on an infected system as the Adobe Updater, a real program that’s installed alongside such mainstay applications as the Adobe Reader. This method of hiding in plain sight means the downloader, Trojan-Downloader-Karagany, may remain active on an infected system for an extended period of time, reinfecting PCs even after the more obvious payloads have been cleared up. During the initial infection, subtlety is this Karagany’s strong suit. When executed, it pulls an act I find slightly more interesting than the conventional file copies itself from one place to another, […]

Continue Reading »

Fakealerts: Building a Better Mousetrap

by

In general, the use of fakealerts – those bogus warnings that look like your PC has started some sort of antivirus scan on its own, then predict imminent doom if you don’t buy some snake oil product right this minute — is on the rise. Fakealerts constitute a particularly effective social engineering trick, earning the makers of bogus, ineffective “antivirus” programs millions of dollars (and the scorn of victims) in the process. So it should come as no surprise that the fakealerts themselves have gone through some technological advances in the past year. In the past few months, the fakealert-makers […]

Continue Reading »

Trojan Uses Commercial Firewall to Block AV Updates

by

Purveyors of rogue security products continue to bulk up their arsenal of stupid tricks, all of which are designed to induce either fear or frustration in victims. Increasingly, certain distributions of rogue antivirus include a payload that blocks the infected computer from receiving antivirus updates. That part isn’t new; Many Trojan installers drop a Hosts file onto the infected machine which effectively prevents the computer from reaching any Web site listed in the file. But malicious Hosts files are easy to identify and remove, because they’re always in the same location (C:Windowssystem32driversetc), and the minute you delete a malicious Hosts […]

Continue Reading »

No Search is Sacred: Fakealerts Flood the Net

by

Search engines appear to be no longer in control of the search results they display at any given moment. That’s bad news not only for the search giants, but for anyone who relies on their results. How can that be? After all, it’s the search engines’ own servers that are supposed to deliver relevant results based on their super-secret sauce algorithms. But black hat, or rogue, search engine optimization (SEO for short) has ruined the trustworthiness of virtually any search. Just a few years ago, companies began to spring up making outrageous promises about how they can get a client’s […]

Continue Reading »