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Is Twitter Home To Malware?

May 1, 2013 by  
Filed under Around The Net

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Security outfit Trusteer has recently identified an active configuration of TorRAT targeting Twitter users. The malware launches a Man-in-the-Browser (MitB) attack through the browser of infected PCs, gaining access to the victim’s Twitter account to create malicious tweets.

Dana Tamir, Enterprise Security Director for Trusteer the malware, which has been used as a financial malware to gain access to user credentials and target their financial transactions, now has a new goal: to spread malware using the online social networking service. At this time the attack is targeting the Dutch market. But since Twitter is used by millions of users around the world, this type of attack can be used to target any market and any industry.

The attack is carried out by injecting Javascript code into the victim’s Twitter account page. The malware collects the user’s authentication token, which enables it to make authorized calls to Twitter’s APIs, and then posts new, malicious tweets on behalf of the victim.

Tamir said that the attack is particularly difficult to defend against because it uses a new sophisticated approach to spear-phishing. Twitter users follow accounts that they trust. Because the malware creates malicious tweets and sends them through a compromised account of a trusted person or organization being followed, the tweets seem to be genuine. The fact that the tweets include shortened URLs is not concerning: Twitter limits the number of characters in a message, so followers expect to get interesting news bits in the form of a short text message followed by a shortened URL. However, a shortened URL can be used to disguises the underlying URL address, so that followers have no way of knowing if the link is suspicious.

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SpyEye Poses Risk To Banking Defenses

August 1, 2011 by  
Filed under Internet

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Financial institutions are facing more trouble from SpyEye, a piece of malicious software that steals money from customers online bank accounts, according to new research from security vendor Trusteer.

SpyEye is a dastardly piece of malicious software: it can harvest credentials for online accounts and also initiate transactions as a person is logged into their account, literally making it possible to watch their bank balance drop by the second.

In its latest versions, SpyEye has been modified with new code designed to evade advanced systems banks have put in place to try and block fraudulent transactions, said Mickey Boodai, Trusteer’s CEO.

Banks are now analyzing how a person uses their site, looking at parameters such as how many pages a person looks at on the site, the amount of time a person spends on a page and the time it takes a person to execute a transaction. Other indicators include IP address, such as if a person who normally logs in from the Miami area suddenly logs in from St. Petersburg, Russia.

SpyEye works fast, and can automatically and quickly initiate a transaction much faster than an average person manually on the website. That’s a key trigger for banks to block a transaction. So SpyEye’s authors are now trying to mimic — albeit in an automated way — how a real person would navigate a website.

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