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Operator dossier

insomnia is a ransomware operator currently active on public leak sites. Darkfield has indexed 37 public victims claimed by this operator between February 7, 2026 and June 25, 2026. Based on the limited publicly available information, Insomnia is a relatively new ransomware group that first emerged in February 2026, appearing to be financially motivated based on their targeting patterns and operational behavior. The group's country of origin and potential affiliations with other ransomware operations remain unknown, with insufficient public documentation from major threat intelligence sources to determine whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and specific technical capabilities have not been extensively documented by CISA, FBI, or major security research firms, though their targeting of 29 known victims across healthcare, technology, manufacturing, and hospitality sectors in the United States, Singapore, and Brazil suggests a broad opportunistic approach rather than highly selective operations. Given the group's recent emergence and limited public reporting from established threat intelligence sources, there are no widely documented notable campaigns or high-profile incidents that have garnered significant attention from law enforcement or major security vendors. As of current reporting, the operational status of Insomnia remains unclear due to the lack of comprehensive public analysis from authoritative sources, making it difficult to assess whether the group remains active or has ceased operations.

Most-targeted sectors

Most-affected countries

Recent disclosures by insomnia

All 37 indexed disclosures. Click any row for the full per-victim dossier.

See every disclosure indexed for insomnia →

How we know this. Operator profiles on Darkfield are built from continuous monitoring of every leak site the group is known to operate, cross-correlated with community-curated feeds (RansomLook, ransomware.live, RansomWatch, MISP-galaxy). Status flips from active to inactive when no new disclosure appears for 60 days. MITRE ATT&CK mappings shown in the interactive section below are sourced from CISA, vendor analysis, and the MITRE community catalog — we attribute each technique back to its source. Aliases reflect operator re-brands and affiliate splits.

Active ransomware operator

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insomnia

37 victims indexed · first seen 5 months ago · last activity 20 days ago

37
Victims indexed
#125 of 364 tracked operators
4m
Active period
Feb 2026 → Jun 2026
3
Countries hit
top US · 27

At a glance

Status
active
First seen
5 months ago
Last activity
20 days ago
Onion sites
1 known endpoint
Primary sector
Healthcare · 11 hits

About

Based on the limited publicly available information, Insomnia is a relatively new ransomware group that first emerged in February 2026, appearing to be financially motivated based on their targeting patterns and operational behavior. The group's country of origin and potential affiliations with other ransomware operations remain unknown, with insufficient public documentation from major threat intelligence sources to determine whether they operate as a Ransomware-as-a-Service model or as an independent entity. Their attack methodology and specific technical capabilities have not been extensively documented by CISA, FBI, or major security research firms, though their targeting of 29 known victims across healthcare, technology, manufacturing, and hospitality sectors in the United States, Singapore, and Brazil suggests a broad opportunistic approach rather than highly selective operations. Given the group's recent emergence and limited public reporting from established threat intelligence sources, there are no widely documented notable campaigns or high-profile incidents that have garnered significant attention from law enforcement or major security vendors. As of current reporting, the operational status of Insomnia remains unclear due to the lack of comprehensive public analysis from authoritative sources, making it difficult to assess whether the group remains active or has ceased operations.

References

1 link

External sources curated by the MISP threat-intel community.

Timeline

2 months
2026-02-01T00:00:00+00:00 · 252026-03-01T00:00:00+00:00 · 4
2026-02-01T00:00:00+00:002026-03-01T00:00:00+00:00

Top countries

🇺🇸 United States
27
🇸🇬 Singapore
1
🇧🇷 Brazil
1
United States dossier →Singapore dossier →Brazil dossier →

Top sectors

Healthcare
11
Technology
2
Manufacturing
2
Hospitality and Tourism
2
Agriculture and Food Production
1
Financial Services
1
Business Services
1
Construction
1
Healthcare dossier →Technology dossier →Manufacturing dossier →Hospitality and Tourism dossier →

MITRE ATT&CK

4 techniques · 3 tactics

Tactics

Initial AccessExecutionImpact

Techniques

  • T1566Phishing
  • T1190Exploit Public-Facing Application
  • T1059Command and Scripting Interpreter
  • T1486Data Encrypted for Impact

Recent victims

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Onion infrastructure

1 known
  • http://i62huw7ve22rpyw6lnq3kmfump2dmsg4xpveec3ere73njwatrz74gad.onion

Source

Updated 20 days ago

Data on this page is sourced from the group's own leak posts, cross-checked with public ransomware trackers (RansomLook, ransomware.live, RansomWatch), MITRE ATT&CK, and our own Tor and Telegram crawlers. This is a public observatory page — share freely.

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