Malware descriptions

Backdoor.Win32.Agent.uu aka Spamthru

It’s interesting to see the lengths malware authors have gone to secure their income. Recently, Joe Stewart from SecureWorks published a very nice description of a Trojan which in an attempt to keep other “competitors” out, installs an antivirus which it uses to keep the system clean. Unsurprisingly, the antivirus which the Trojan installs is KAV – specifically, a version of KAV for Wingate.

Up until now, most of the antivirus tools installed by trojans have been either rogue SpySheriff-like products or free disinfection tools like Microsoft’s MSRT. Which is why it’s really odd to see a real antivirus application being installed by a Trojan.

Detection for this thing is now available as Backdoor.Win32.Agent.uu.

Backdoor.Win32.Agent.uu aka Spamthru

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Reports

LuminousMoth APT: Sweeping attacks for the chosen few

We recently came across unusual APT activity that was detected in high volumes, albeit most likely aimed at a few targets of interest. Further analysis revealed that the actor, which we dubbed LuminousMoth, shows an affinity to the HoneyMyte group, otherwise known as Mustang Panda.

WildPressure targets the macOS platform

We found new malware samples used in WildPressure campaigns: newer version of the C++ Milum Trojan, a corresponding VBScript variant with the same version number, and a Python script working on both Windows and macOS.

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.

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