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Ransomware group profile · #280 by claimed victims

Ragnarok ransomware

According to Bleeping Computer, the ransomware is used in targeted attacks against unpatched Citrix servers. It excludes Russian and Chinese targets using the system's Language ID for filtering. It also tries to disable Windows Defender and has a number of UNIX filepath references in its strings. Encryption method is AES using a dynamically generated key, then bundling this key up via RSA.

Active First seen Mar 2021
3Victims claimed on leak sites
0Victims in the last 30 days
0Victims in the last 90 days
0Countries hit
2Leak-site URLs tracked, 0 online
30 Dec 2021Latest claim recorded

Victimology

Who Ragnarok claims to have breached, from 3 leak-site posts recorded by VULONE.

Claims per month last 12 months

Oct 2025: 0OctNov 2025: 0Dec 2025: 0Jan 2026: 0JanFeb 2026: 0Mar 2026: 0Apr 2026: 0AprMay 2026: 0Jun 2026: 0Jul 2026: 0JulAug 2026: 0Sep 2026: 0

Top sectors

Retail & E-Commerce1
Technology1
Financial Services1

Top countries

No country data yet.

Latest claimed victims 3 most recent

VictimSectorCountryClaimed
FNBNWFL Data leaked Financial Services 30 Dec 2021
Decrypt Technology 9 Sep 2021
Boggi Milano Retail & E-Commerce 31 Mar 2021

All 3 Ragnarok victims, searchable

Full victim list with claim posts, domains, timing and exports, plus the negotiation chats and leak-site screenshots VULONE archives for this crew.

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Tactics, techniques and procedures

ATT&CK technique mapping for Ragnarok is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Ragnarok ransomware still active?
Ragnarok is tracked as active. The most recent leak-site claim VULONE recorded is dated 30 December 2021.
How many victims has Ragnarok claimed?
VULONE has recorded 3 leak-site victim claims attributed to Ragnarok since March 2021, across 0 countries and 3 sectors.
Which industries does Ragnarok target?
The sectors most often named on the Ragnarok leak site are Retail & E-Commerce, Technology, Financial Services.
Which countries are most affected by Ragnarok?
Country data for Ragnarok victims is not yet available.
Where does VULONE get Ragnarok victim data?
Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

Other ransomware groups

Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].