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Ransomware group profile · #569 by claimed victims

Onepercent ransomware

OnePercent Group is a cybercriminal operation active since at least November 2020 that targeted US organizations using phishing with IcedID trojans, Cobalt Strike, and double-extortion, threatening a "one percent leak" of data before escalating to a full dump or sale to REvil; the FBI issued a formal flash advisory in August 2021.

Active First seen Sep 2026
0Victims claimed on leak sites
0Victims in the last 30 days
0Victims in the last 90 days
0Countries hit
1Leak-site URLs tracked, 0 online
—Latest claim recorded

Tactics, techniques and procedures

ATT&CK technique mapping for Onepercent 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 Onepercent ransomware still active?
Onepercent is tracked as active.
How many victims has Onepercent claimed?
VULONE has recorded 0 leak-site victim claims attributed to Onepercent, across 0 countries and 0 sectors.
Which industries does Onepercent target?
Sector data for Onepercent victims is not yet available.
Which countries are most affected by Onepercent?
Country data for Onepercent victims is not yet available.
Where does VULONE get Onepercent 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.

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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].