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Primitive Bear Using LNK Files to Deploy Remcos Backdoor Against Ukrainian Targets

Apr 4, 2025 2:48:44 PM / by The Hivemind posted in Ukraine, Russia, Threat Bulletin, Primitive Bear, LNK, Gamaredon, Remcos

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Related Families: Remcos

Executive Summary

Primitive Bear has been observed targeting Ukrainian users with malicious LNK files since at least November 2024. This operation employs a PowerShell downloader and DLL side-loading techniques to deliver the Remcos RAT, exploiting war-related themed lures to deceive victims.

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2024 Recap - Russian Threat Actor Activity

Dec 19, 2024 12:38:53 PM / by The Hivemind posted in Russia, Threat Bulletin, Europe, 2024, Recap

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Executive Summary

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

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Venomous Bear’s Lunar Toolset

May 28, 2024 1:05:05 PM / by The Hivemind posted in Russia, Threat Bulletin, Government, Venomous Bear, Turla, LunarMail, LunarWeb, LunarLoader

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Related Families: LunarMail, LunarLoader, LunarWeb
Verticals Targeted: Government 

Executive Summary

Venomous Bear was observed targeting a European Ministry of Foreign Affairs using a new toolset, dubbed the Lunar toolset.

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AcidPour Wiper Targets Linux x86 Devices

Mar 29, 2024 12:44:53 PM / by The Hivemind posted in Ukraine, Russia, Threat Bulletin, Linux, AcidRain, AcidPour, x86

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Related Families: AcidRain
Verticals Targeted: Telecommunications 

Executive Summary

AcidPour, a variant of AcidRain, was recently observed targeting entities in Ukraine. The targets likely included telecommunications entities.

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ColdRiver Using Spica Backdoor

Feb 2, 2024 1:06:16 PM / by The Hivemind posted in Russia, Threat Bulletin, Backdoor, Spica, ColdRiver

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Executive Summary

Russia nexus threat actor group ColdRiver was recently observed using Spica backdoor in an espionage campaign.

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Fancy Bear Campaign Leverages New Malware

Jan 12, 2024 11:42:16 AM / by The Hivemind posted in Ukraine, Russia, Threat Bulletin, Espionage, Government, Fancy Bear, STEELHOOK, OCEANMAP, MASEPIE

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Related Families: OCEANMAP, MASEPIE, STEELHOOK
Verticals Targeted: Government

Executive Summary

Fancy Bear was recently observed engaging in a phishing campaign targeting entities in Ukraine. In the campaign, the threat actors used three never before seen malware families, OCEANMAP, MASEPIE, and STEELHOOK.

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2023 Recap - Cyberwar and Hacktivism in the Russia-Ukraine Conflict

Dec 8, 2023 1:17:32 PM / by The Hivemind posted in Ukraine, Russia, Threat Bulletin, Primitive Bear, Cozy Bear, Killnet, Cadet Blizzard, LitterDrifter, Ghost Writer, Fancy Bear, VooDoo Bear, RedStinger, Nodaria, Cyber Regiment, IT Army of Ukraine, KibOrg, NLB

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Executive Summary

The Russia-Ukraine conflict has continued throughout 2023, with a plethora of both state-sponsored and hacktivist cyber activity taking place alongside kinetic warfare. In this report, PolySwarm provides the highlights of cyber activity associated with the Russia-Ukraine conflict in 2023.

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AresLoader

Oct 13, 2023 2:27:36 PM / by The Hivemind posted in Russia, Threat Bulletin, Loader, Cybercrime, AresLoader, MaaS

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Executive Summary

AresLoader is a loader malware-as-a-service (MaaS) active in the wild since at least November 2022. AresLoader is designed to masquerade as legitimate software, while covertly downloading malicious payloads.

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