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Inactive · #128 by victimsRansomware group

Spook

As of Oct 19, 2026, Spook has listed 35 confirmed victims on its leak site since Jul 11, 2025, 0.1% of all victims tracked by Brandefense.

Spook ransomware operated briefly in September-October 2021 as a rebrand of the Prometheus ransomware group (built on the Thanos builder), conducting double-extortion attacks against global targets with a concentration in manufacturing and unusually publishing all victim names regardless of ransom payment.

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Confirmed Victims
35
Rank By Victims
#128
Last Leak-Site Post
Jul 11, 2025
Top Country
Unknown
Top Sector
Unknown

Victims Posted Per Month.

Spook confirmed victims per month
MonthConfirmed victims
July 202535
August 20250
September 20250
October 20250
November 20250
December 20250
January 20260
February 20260
March 20260
April 20260
May 20260
June 20260
July 20260
August 20260
September 20260
October 2026 (month in progress)0
Updated continuously · figures as of Oct 19, 2026

Latest Spook Victims.

Search all 35 →
Latest confirmed leak-site victims claimed by Spook
VictimCountryIndustryData claimedPosted
NOF CORPORATIONUnknownUnknownNot stated
Apex Filling SystemsUnknownUnknownNot stated
Princess Yachts InternationalUnknownUnknownNot stated
NeofidelysUnknownUnknownNot stated
Paris SocietyUnknownUnknownNot stated
VKPUnknownUnknownNot stated

How They Operate.

Spook's threat actor profile lists 1 malware and tools, with its targets and related actors.

TTPs, CVEs and malware →

History.


  1. First seen in Brandefense data

  2. Busiest month on record: 35 confirmed victims

  3. First confirmed victim listed on its leak site

  4. Most recent leak-site post

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Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.