The PolySwarm Blog

Verticals Targeted: Cryptocurrency
Regions Targeted: Not Specified
Related Families: None

Executive Summary

NimDoor is a sophisticated MacOS malware deployed by North Korea-linked threat actors, likely Stardust Chollima, targeting Web3 and cryptocurrency organizations. Utilizing Nim and C++ binaries, AppleScript, and social engineering via fake Zoom updates, NimDoor employs process injection, WebSocket communications, and signal-based persistence to steal sensitive data.

Verticals Targeted: Cryptocurrency
Regions Targeted: India
Related Families: GolangGhost

Executive Summary

Famous Chollima, a North Korean-aligned threat actor, has deployed PylangGhost, a Python-based remote access trojan (RAT), targeting cryptocurrency and blockchain professionals in India. This malware, a variant of the GolangGhost RAT, facilitates credential theft and remote system control via sophisticated social engineering tactics.

Executive Summary

KoSpy is a sophisticated Android spyware linked to North Korean threat actor Ricochet Chollima. It has been targeting Korean and English-speaking users since March 2022.

Executive Summary

This Threat Bulletin is part of PolySwarm’s 2024 Recap series. This report highlights the activity perpetrated by North Korea-based threat actors in 2024.

Related Families: Preft

Related Families: PondRAT, PoolRAT
Verticals Targeted: Software Development 

Executive Summary

North Korea nexus threat actor group Labyrinth Chollima was observed using poisoned Python packages to deliver PondRAT, a backdoor that targets MacOS and Linux systems.  

Verticals Targeted: Software Development

Executive Summary

An ongoing social engineering campaign was observed targeting software developers. The threat actors use fake interviews to deliver a Python-based RAT, known as DevPopper.

Related Families: Dtrack, Dora RAT, TigerRAT, SmallTiger, LightHand, ValidAlpha
Verticals Targeted: Military, Defense, Engineering, Technology, Education, Construction, Manufacturing, Gambling, Energy

Executive Summary

Last week, the US Department of Justice (DOJ) indicted Rim Jong Hyok, an individual allegedly affiliated with Silent Chollima. The group has been active since at least 2014 and is known to conduct espionage operations on behalf of North Korea.