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New malware being used by cybercrooks does significantly more than let hackers loot a bank account; it hides proof of a victim's dwindling balance by rewriting online bank statements on the fly, in accordance with a new report.Hit on fake bank statement    to explore more about our services and sites. Hope you ll like our more services.



The sophisticated hack works on the Trojan horse program installed on the victim's machine that alters html coding before it's displayed in the user's browser, to either erase proof of a money transfer transaction entirely from a bank statement, or alter the amount of money transfers and balances.

The ruse buys the crooks time before a victim discovers the fraud, though won't work if a victim uses an uninfected machine to check their bank balance.

The novel technique was employed in August by way of a gang who targeted customers of leading German banks and stole Euro 300,000 in three weeks, in accordance with Yuval Ben-Itzhak, chief technology officer of computer security firm Finjan.


"The Trojan is hooked into your browser and dynamically modifies the text in the html," Ben-Itzhak says. "It's a really sophisticated technique."

The data appears in a cybercrime intelligence report (.pdf) compiled by Finjan's Malicious Code Research Center.

The victims' computers are infected with the Trojan, known as URLZone, after visiting compromised legitimate web sites or rogue sites setup by the hackers.

Once a victim is infected, the malware grabs the consumer's sign in credentials with their bank account, then contacts a get a handle on center hosted on a device in Ukraine for further instructions. The control center tells the Trojan the amount of money to wire transfer, and where to send it. In order to avoid tripping a bank's automated anti-fraud detectors, the malware will withdraw random amounts, and check to be sure the withdrawal doesn't exceed the victim's balance.

The cash gets used in the legitimate accounts of unsuspecting money mules who've been recruited online for work-at-home gigs, never suspecting that the money they're allowing to flow through their account will be laundered. The mule transfers the money to the crook's chosen account. The cyber gang Finjan tracked used each mule only twice, in order to avoid fraud pattern detection.

"They instruct the Trojan that the next time you log into your online banking account, they really modify and change the statement you see there," says Ben-Itzhak. "In the event that you don't know it, you won't report it to the bank so they have more time for you to cash out."

The researchers were able to capture screen shots showing the rogue bank statements doing his thing, disguising, for instance, a transport of Euro 8,576.31 as Euro 53,94.

The researchers also found statistics in the command tool showing that out of 90,000 visitors to the gang's rogue and compromised websites, 6,400 were infected with the URLZone trojan. The majority of the attacks Finjan observed affected people using Internet Explorer browsers, but Ben-Itzhak says other browsers are vulnerable too.

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