August 13, 2012, 8:01 AM — Two security organizations have released online tools that let Windows users check for possible infections by Gauss, the newly-revealed cyber surveillance malware thought to have been built by one or more governments.
Kaspersky Lab and the Laboratory of Cryptography and System Security (CrySys) at the Budapest University of Technology and Economics each published Gauss detection tools today.
Gauss, Kaspersky said yesterday, is a sophisticated threat that monitors financial transactions with Middle Eastern banks, perhaps as part of a wider investigation into the funding of terrorist groups. Kaspersky believes that Gauss was built by or under the auspices of a government, in large part because of coding practices that resemble those used in Flame, an advanced spying and data-stealing toolkit that targeted Iranian computers.
Flame, which was uncovered three months ago but may have been operating since mid-2008, was notable for its ability to fake the Windows Update service, then use that to infect up-to-date Windows PCs.
Kaspersky has rejected the idea that Gauss is a run-of-the-mill money-stealing Trojan.
Both CrySys and Kaspersky sniff out Gauss by looking for a custom-built font, dubbed "Palida Narrow," that the malware adds to infected machines.
CrySys has played a prominent role in analyzing some of the malware that Kaspersky argued is linked to Gauss, including "Duqu," which is believed to have been crafted by the same team that built Stuxnet, the worm used to sabotage Iran's nuclear fuel enrichment program several years ago.
It's not yet clear why Gauss inserts the Palida Narrow font into infected PCs, or what purpose the new font serves. Some have speculated that it may hint at the use of a yet-undiscovered "zero-day" exploit of an unpatched vulnerability in word processing software, such as Microsoft Word.