The PolySwarm Blog

Verticals Targeted: Financial 

Executive Summary

A Linux variant of FASTCash “payment switch” malware was recently discovered. This malware is typically used by North Korea nexus threat actor groups to make unauthorized cash withdrawals from ATMs.

Verticals Targeted: Aerospace, Manufacturing, Professional Services, Scientific and Technical Services, Retail, Construction, Insurance, Telecommunications, Hospitality, and Legal Services

Executive Summary

Akira ransomware is one of the most prolific ransomware families of 2024. Active in the wild since April 2023, Akira has continued to evolve, maintaining its relevance on the threat landscape.

Related Families: BazarLoader, BazaLoader

Executive Summary

BumbleBee is a sophisticated loader. It was first seen in the wild in 2022 and was a replacement for BazarLoader. It recently re-emerged with a new infection chain, indicating an evolving threat.

Related Families: Mirai
Verticals Targeted: Education, Government, Telecommunications, Financial, Gaming

Executive Summary

Gorilla Botnet, also known as GorillaBot, is a Mirai-based botnet family that recently gained momentum and notoriety.

Related Families: LockBit 3.0
Verticals Targeted: Media, Insurance, Legal Services, Healthcare, Retail, Software, Construction, Manufacturing, Real Estate, Education, Government 

Executive Summary

BrainCipher ransomware, which was first observed in June 2024, is an emerging threat. BrainCipher is based on the leaked LockBit 3.0 builder and is functionally similar to LockBit 3.0.  

Related Families: Venus, 2023Lock
Verticals Targeted: Healthcare, Manufacturing, Business Services 

Executive Summary

Perfectl is a malware family that targets misconfigured Linux servers. In a recent campaign, Perfectl was observed deploying cryptominers and proxyjacking software.

Related Families: Preft