Posts Categorized: Threat Research


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

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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, […]

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Rogue AV Spam Invades Multiply, Yahoo Mail

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While nowhere near the size of the mammoth Facebook, the social network Multiply is no slouch. Based in Boca Raton, Florida, the site is designed around not only sharing photos and videos with friends and family, but also a relatively novel concept called social shopping, which permits users of the site to shop together in a virtual marketplace, or even set up an Internet storefront. At last count, according to Multiply’s blog, the site has over 12 million users, which means that the Multiply Market may be one of the largest single shopping Web sites in Southeast Asia, where most […]

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Search Hijacker Adds Files to Firefox Profile

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In September, I posted an item about a dropper which we call Trojan-Dropper-Headshot. This malware delivers everything including the kitchen sink when it infects your system. It has an absolute ton of payloads, any of which on their own constitute a serious problem. All together, they’re a nightmare. Among the payloads, we’ve seen this monstrosity drop downloaders (Trojan-Agent-TDSS and Trojan-Downloader-Ncahp, aka Bubnix), adware (Virtumonde, Street-Ads, and Sky-banners), keyloggers (Zbot and LDpinch), clickfraud Trojans (Trojan-Clicker-Vesloruki and at least three other generic clickers), and a Rogue AV called Antivir Solution Pro. So this is one nasty beast that has no qualms about using […]

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Game Trojans’ Biggest Tricks in 2010

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By Andrew Brandt and Curtis Fechner It’s appropriate that this year’s Blizzcon, the two-day celebration of all things World of Warcraft, takes place during National Cyber Security Awareness Month. No other game is as heavily targeted by thieves as WoW, so we thought this would be as good a time as any to run down some of the malware threats that face gamers. 2010 has been a big year for Trojans that steal game passwords or license keys. The people who create malware targeting online games show no signs of relenting, nor are they laying down on the job. Innovation […]

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WoW Patch Brings Out the Malware Trolls

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Last week, Activision/Blizzard released a long-anticipated patch for its immensely popular game, World of Warcraft. While I don’t play this game, a number of our Threat Researchers do, and they’ve been on the lookout for shenanigans. Curtis Fechner found a doozy. The update comprises a major overhaul of many core systems within the game, affecting the graphics engine, game rules, player abilities, and also the interface. Many players use downloadable, player-created add-ons to further customize the appearance of the user interface; Patches as comprehensive as this one mean that many of the old add-ons simply won’t work until the add-on’s […]

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Hey Malware Guy: Just What the Heck Am I Supposed to Do With This?

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The Tacticlol downloader, responsible for a lot of infections over the past year, propagates in two ways: via drive-by downloads, and as a .zip archive attached to messages. Maybe the spam filtering companies finally caught on to the trick, or maybe the Tacticlol distributors are just trying to mix it up, but the latest sample to come over the transom has me scratching my head. Like most others, this sample came attached to an email made to look like a message that UPS would never send. Once again, the message tries to convince the recipient that the attached file is […]

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Your Federal Tax Payment Has Not Been Rejected

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It’s been more than a week since we started seeing spam email, supposedly sent by the EFTPS (Electronic Federal Tax Payment System, a division of the US Department of the Treasury), informing recipients in dire, bolded text that Your Federal Tax Payment ID: 01037513 has been rejected. I had hoped it would be a faded memory by now, but apparently it just won’t die. Spam, ladies and gentlemen. It’s a lie, cooked up in a criminal’s troubled mind, with the goal of convincing signficant numbers of people to click a link in the message. It’s a pretty contrived message, which […]

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Patchy Phisher Forces Firefox to Forego Forgetting Passwords

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Every browser can, at the user’s discretion, be set up to remember passwords. In general, Webroot advises most users not to set the browser to store login credentials, because they’re so easily extracted by password-stealing Trojans like Zbot. In Firefox, for example, you can click Tools, Options, then open the Security tab, and uncheck a box that tells the browser to remember passwords entered into Web forms. (The box is checked by default.) But in the course of taking a more thorough look at a Trojan that came to our attention in July, we were surprised to see the Trojan […]

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Newsflash: HTML Spammers are Not So Bright

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It’s been more than a week that we at Webroot, and countless others, have been getting floods of bogus messages with HTML attachments. I thought I’d give the curious readers of this blog a quick glance at one of the drive-by sites that load in the browser if you try to open the file. As I’d mentioned previously, the HTML files themselves simply contain highly obfuscated Javascript (code that’s hard for humans to read but easy for machines to interpret). When you try to load those malicious scripts into a browser, the script instructs the browser to load a page […]

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Civilization 5 Torrent Bonus: Uncivilized Malware

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Bootlegged copies of Civilization 5, the highly anticipated, just-released real time strategy game, are already popping up in file sharing services. And, as we’ve come to expect, some of the pirated copies of the game come with that little something special — malicious components. One of our Threat Research Analysts, who also happens to be an avid gamer, started looking for pirated copies of the game Friday morning and, within five minutes of looking, found Trojans in some of the torrents in circulation. I’ve chosen to focus on one of these files, not only because it was the first we […]

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