Malware Targets Job-seekers

A new version of the Gameover computer Trojan is targeting job hunters and recruiters by attempting to steal log-in credentials for Monster.com and CareerBuilder.com accounts.

Gameover is one of several Trojan programs that are based on the infamous Zeus banking malware, whose source code was leaked on the Internet in 2011. Like Zeus, Gameover can steal log-in credentials and other sensitive information by injecting rogue Web forms into legitimate websites when accessed from infected computers.

The ability to inject content into browsing sessions in real time has traditionally been used by computer Trojans to steal online banking credentials and financial information. However, cybercriminals are increasingly using this technique to compromise other types of accounts as well.

For example, in February, researchers from security firm Adallom found a Zeus variant that stole Salesforce.com log-in credentials and scraped business data from the compromised accounts.

The latest development involves a new Gameover variant that contains a configuration file to target Monster.com accounts, one of the largest employment websites in the world, security researchers from antivirus firm F-Secure said.

“A computer infected with Gameover ZeuS will inject a new ‘Sign In’ button [into the Monster.com sign-in page], but the page looks otherwise identical,” they said.

After the victims authenticate through the rogue Web form the malware injects a second page that asks them to select and answer three security questions out of 18. The answers to these questions expose additional personal information and potentially enable attackers to bypass the identity verification process.

Targeting Monster.com is a new development, but the Gameover malware had already been targeting CareerBuilder.com, another large employment website, for some time.

Recruiters with accounts on employment websites should be wary of irregularities on log-in pages, especially if those accounts are tied to bank accounts and spending budgets, the F-Secure researchers said. “It wouldn’t be a bad idea for sites such as Monster to introduce two factor authentication beyond mere security questions.”

The authors of the Gameover Trojan program have been particularly active recently. In early February researchers from security firm Malcovery Security reported that a new variant of Gameover was being distributed as an encrypted .enc file in order to bypass network-level defenses. Later that month researchers from Sophos detected a Gameover variant with a kernel-level rootkit component that protected its files and processes, making it harder to remove.

Unlike most other Zeus spinoffs, Gameover is also using peer-to-peer technology for command-and-control instead of traditional hosted servers, which improves its resilience to takedown efforts by security researchers.

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Zeus Attached To Cancer Email Scam

Thousands of email users have been hit by a sick cancer email hoax that aims to infect the recipients’ computers with Zeus malware.

The email has already hit thousands of inboxes across the UK, and looks like it was sent by the National Institute for Health and Care Excellence (NICE). It features the subject line “Important blood analysis result”.

However, NICE has warned that it did not send the malicious emails, and is urging users not to open them.

NICE chief executive Sir Andrew Dillon said, “A spam email purporting to come from NICE is being sent to members of the public regarding cancer test results.

“This email is likely to cause distress to recipients since it advises that ‘test results’ indicate they may have cancer. This malicious email is not from NICE and we are currently investigating its origin. We take this matter very seriously and have reported it to the police.”

The hoax message requests that users download an attachment that purportedly contains the results of the faux blood analysis.

Security analysis firm Appriver has since claimed that the scam email is carrying Zeus malware that if installed will attempt to steal users’ credentials and take over their PCs.

Appriver senior security specialist Fred Touchette warned, “If the attachment is unzipped and executed the user may see a quick error window pop up and then disappear on their screen.

“What they won’t see is the downloader then taking control of their PC. It immediately begins checking to see if it is being analysed, by making long sleep calls, and checking to see if it is running virtually or in a debugger.

“Next it begins to steal browser cookies and MS Outlook passwords from the system registry. The malware in turn posts this data to a server at 69.76.179.74 with the command /ppp/ta.php, and punches a hole in the firewall to listen for further commands on UDP ports 7263 and 4400.”

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Hackers Go After WordPress