Report

Home > List all groups > List all tools > List all groups using tool Ryuk

Threat Group Cards: A Threat Actor Encyclopedia

Tool: Ryuk

Names	Ryuk
Category	Malware
Type	Ransomware, Big Game Hunting
Description	Ryuk is a ransomware which encrypts its victim's files and asks for a ransom via bitcoin to release the original files. It is has been observed being used to attack companies or professional environments. Cybersecurity experts figured out that Ryuk and Hermes ransomware shares pieces of codes. Hermes is commodity ransomware that has been observed for sale on dark-net forums and used by multiple threat actors.
Information	<https://www.crowdstrike.com/blog/big-game-hunting-with-ryuk-another-lucrative-targeted-ransomware/> <https://www.csoonline.com/article/3541810/ryuk-ransomware-explained-a-targeted-devastatingly-effective-attack.html> <https://www.cybereason.com/blog/triple-threat-emotet-deploys-trickbot-to-steal-data-spread-ryuk-ransomware> <https://research.checkpoint.com/ryuk-ransomware-targeted-campaign-break/> <https://www.fireeye.com/blog/threat-research/2019/01/a-nasty-trick-from-credential-theft-malware-to-business-disruption.html> <https://www.fireeye.com/blog/threat-research/2019/04/pick-six-intercepting-a-fin6-intrusion.html> <https://securingtomorrow.mcafee.com/other-blogs/mcafee-labs/ryuk-ransomware-attack-rush-to-attribution-misses-the-point/> <https://thedfirreport.com/2020/10/08/ryuks-return/> <https://cofense.com/the-ryuk-threat-why-bazarbackdoor-matters-most/> <https://www.deepinstinct.com/2020/11/24/ryuk-ransomware-the-deviance-is-in-the-variance/> <https://www.cybereason.com/blog/cybereason-vs.-ryuk-ransomware> <https://www.advanced-intel.com/post/crime-laundering-primer-inside-ryuk-crime-crypto-ledger-risky-asian-crypto-traders> <https://www.cert.ssi.gouv.fr/uploads/CERTFR-2021-CTI-006.pdf> <https://www.darkreading.com/vulnerabilities---threats/ryuks-rampage-has-lessons-for-the-enterprise/a/d-id/1340533> <https://www.advanced-intel.com/post/adversary-dossier-ryuk-ransomware-anatomy-of-an-attack-in-2021> <https://news.sophos.com/en-us/2021/05/06/mtr-in-real-time-pirates-pave-way-for-ryuk-ransomware/> <https://securityintelligence.com/articles/ryuk-ransomware-operators-shift-tactics/> <https://www.mcafee.com/blogs/other-blogs/mcafee-labs/new-ryuk-ransomware-sample%e2%80%aftargets-webservers/>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk>
AlienVault OTX	<https://otx.alienvault.com/browse/pulses?q=tag:Ryuk>

Last change to this tool card: 08 August 2021

Download this tool card in JSON format

Previous: RunningRAT
Next: S3BROWSER

All groups using tool Ryuk

Changed	Name	Country	Observed
APT groups
	FIN6, Skeleton Spider	[Unknown]	2015-Mar 2020
	Wizard Spider, Gold Blackburn		2014-Aug 2021
Other groups
	UNC1878	[Unknown]	2020

3 groups listed (2 APT, 1 other, 0 unknown)

Thailand Computer Emergency Response Team (ThaiCERT) Electronic Transactions Development Agency Follow us on	Report incidents
		+66 (0)2-123-1234
		report@thaicert.or.th
		Download PGP key