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NightSpire, also known as NightSpire Ransomware, is a financially motivated cybercriminal ransomware group active in 2026. It conducts double-extortion operations, encrypting compromised systems and threatening public disclosure of stolen data to coerce ransom payments. The group operates a data-leak site and has publicly claimed victims across multiple sectors, including manufacturing, energy, financial services, healthcare, transportation, professional and business services, education, and consumer services. Reported victim organizations span the United States, Colombia, Egypt, Spain, and Japan; NightSpire has also been identified among ransomware groups targeting healthcare entities in the EMEA region. Public reporting associated with several NightSpire claims includes alleged exposure of business, financial, personnel, and communications data.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
27 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
24 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
NightSpire was listed among other ransomware groups observed in Japan during the first half of 2026.
Conducted a ransomware attack against Colombian transportation company Transportes Montejo S.A.S.
A named group associated with a data leak site that exposed server information and error pages on the clearnet.
Mentioned only as prior-week comparison background and not part of the current week's active ranking.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.