Posts Categorized: Stupid malware tricks


Modified Websites Pushing Trojans On the Rise

by

For the past couple of weeks, owners of Web sites have been hit with a wave of attacks that surreptitiously infect unsuspecting visitors with a wide variety of malware types. The first wave inflicted rogue antivirus on unlucky victims, but late last week victims who visited infectious sites were redirected into a drive-by download site that pushes clickers onto a vulnerable visitor’s computer. The affected web sites have been modified to add malicious, obfuscated Javascript code to the footer of each page. Some Web hosts are trying to notify customers or fix the problems. At first, the problem affected sites […]

Continue Reading »

This PC Will Self-Destruct in Ten Seconds

by

Phishing Trojans that try to remain below the radar are still prevalent, but a number of files coming through Threat Research point to a disturbing trend: Several new variants of existing malware families are taking a scorched earth approach to infected computers, rendering the PC unbootable (just check out the batch file at left for just one egregious example) once the malware has retrieved whatever data it’s trying to steal, or deliberately crashing it, repeatedly, if you try to remove it. Since the middle of last year, we’ve seen a sprinkling of malware that also wipes out key files on […]

Continue Reading »

’30 Rock’ Phrase ‘Circulus et Pruna’ Draws Fakealerts

by

Every search result on the first page (and most of the second page) of results for “circulus et pruna” leads to a Fakealert trap.

Continue Reading »

Pushu Variant Spams Hotmail, Cracks Audio Captchas

by

A new version of Trojan-Pushu is doing some interesting stuff to bypass captchas used by Microsoft’s Hotmail/Live.com/MSN webmail services in order to spam people with links to malicious Yahoo Groups pages. The three-year-old spy (known by a variety of other aliases, including Cutwail, Pushdo, Diehard, and Rabbit) has always been, primarily, a spam bot. In this case, however, the spy is not sending spam by connecting to open mail relays or more traditional means; It’s spamming through the Hotmail/Live.com Web mail interface. Most interestingly, during the course of the spam sessions, the spy apparently pulls down “audio captchas” and successfully […]

Continue Reading »

Weird New Koobface URLs Use Old Tricks

by

Pretty much since it arrived on the malware scene, Koobface has used the technique of sending messages with Web links — in your name, to your friends — as a method of propagating the infection to others. Using your name is a powerful social engineering trick, and the makers of the worm have tried innumerable ways to mask the danger behind those dangerous links: They’ve used “short link” services like Bit.ly to hide the destination; They build pages on sites normally considered safe, like Blogspot or Google Reader, that simply redirect users to a dangerous page; and they use stolen […]

Continue Reading »

Fakealert Accurately Mimics Windows Update

by

A new Windows Update-themed stupid malware trick that’s making the rounds appears to be trying to capitalize on the recent frequency of “out of band” Windows patches Microsoft has been releasing lately. The spy, which serves as nothing more than a vehicle for the fraudulent sale of a fake product called Antimalware Defender, so closely resembles a Windows Update installation dialog that some members of our threat research team who saw these files had to pause and look carefully at the dialog box before deciding it is, in fact, a big fat hoax. Even the Microsoft Knowledge Base article the […]

Continue Reading »

Botnet Trojan Adds “Gootkit” Code to Web Pages

by

An insidious new Trojan that finds its way onto Windows PCs in the course of a drive-by infection employs a novel method to propagate: It connects to Web servers using stolen FTP credentials, and if successful, modifies any HTML and PHP files with extra code. The code opens an iFrame pointing to a page that loads browser exploits. The exploit pushes down the infection, which then perpetuates the process. The initial infection vector in this case was a spam message supposedly from Amazon.com containing a link to the page which performs the drive-by attacks. The malware, which we’re calling Trojan-Backdoor-Protard, […]

Continue Reading »

British Music Awards Draws Web Scams

by

Music fans may already be aware that next Tuesday the British music industry will honor the top acts of the year at a ceremony known simply as The BRITs. What they may not know is that common Internet criminals have begun to target people searching for information about the artists and the music connected with the awards for attack. This will be the 30th ceremony held in the 33 year history of the awards. As in previous years, the BRIT Trust (a charity run by BPI, the UK’s recording industry trade association) will donate profits from the ceremony, including the […]

Continue Reading »

Play it Safe on Safer Internet Day

by

February 9 marks Safer Internet Day, and around the world, people are trying to help their fellow netizens navigate an obstacle course of threats to their security and privacy. InSafe, the organization funded by the EU that sponsors the annual youth-targeted event, has themed the day around the concept “Think B4 U post.” As grammatically sloppy as that sounds, it’s actually good advice. Readers of this blog shouldn’t be surprised that myriad dangers threaten the safety of all Internet users: Keylogging software disguised as “updates” are everywhere; Fake security alerts pop up when you least expect them; Phishing Web pages […]

Continue Reading »

Cover Your Assets on Data Privacy Day

by

Today is Data Privacy Day, which is supposed to remind us all that keeping our digital secrets a secret is important and necessary. To commemorate the event, I’d like to run down some of the most serious privacy threats any of us could face on a daily basis: How a malware infection puts your privacy at risk. For years, it’s been clear that the creators and distributors of malicious software are after one thing above all others — money. Whether they steal it (by installing a keylogger, or just phishing) or defraud you out of it (by coercing users to […]

Continue Reading »