Incidents

Paris Hilton spam

Last week there was a lot of speculation going round that Paris Hilton has changed her sexual orientation. A couple of years ago when she was making the news, IM-Worm authors played on this. With these latest rumours – I am an AV researcher after all – I immediately thought that the bad guys would find some way to use these rumours. Unsurprisingly, this prediction turned out to be true. Over the last couple of days we’ve seen spam being sent out which contains a link in it claiming to be a Paris Hilton video.

The social engineering is obvious – although it’s amusing that the video title mentions men rather than women. Putting this aside, it’s rather an odd case from a technical point of view.

The URL leads to a simple Trojan-Downloader which is packed using FSG. It doesn’t have any anti-AV functionality. In turn the Downloader downloads two files, one for harvesting email addresses from the victim machine and one for sending out spam. One of those is stuffed with anti-AV techniques.

Of course, using Trojan-Downloaders is extremely common these days. What’s strange is the combination of such a simple Trojan-Downloader which downloads highly sophisticated malware.

And given that the Trojan-Downloader will be heuristically detected by quite a number of virus scanners, including ours, the chances of actually getting infected are slim. This leaves me wondering if this unusual combination was created by the authors by accident, or by some strange design.

Paris Hilton spam

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Reports

Ferocious Kitten: 6 years of covert surveillance in Iran

Ferocious Kitten is an APT group that has been targeting Persian-speaking individuals in Iran. Some of the TTPs used by this threat actor are reminiscent of other groups, such as Domestic Kitten and Rampant Kitten. In this report we aim to provide more details on these findings.

Andariel evolves to target South Korea with ransomware

In April 2021, we observed a suspicious Word document with a Korean file name and decoy. It revealed a novel infection scheme and an unfamiliar payload. After a deep analysis, we came to a conclusion: the Andariel group was behind these attacks.

Operation TunnelSnake

A newly discovered rootkit that we dub ‘Moriya’ is used by an unknown actor to deploy passive backdoors on public facing servers, facilitating the creation of a covert C&C communication channel through which they can be silently controlled. The victims are located in Africa, South and South-East Asia.

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