Ransomware Intelligence

nightspire

Ransomware group profile

239Victims
South KoreaSource country
81Impact score

Description

NightSpire is a financially motivated ransomware group that emerged in early 2025, targeting small to medium-sized enterprises across various sectors. The group employs a double extortion strategy, encrypting data after exfiltration, and has operated a Dark Web leak site to threaten the public release of stolen data since March 2025.

Key insights

  • Utilizes a double extortion model by encrypting stolen data and threatening public release.
  • Gains initial access using exploits like CVE-2024-55591, RDP brute-forcing, and phishing.
  • Features a custom ransomware payload written in Go that appends the '.nspire' extension to encrypted files.
  • Employs living-off-the-land techniques, leveraging legitimate tools for data exfiltration.
  • Targets a wide range of industries with ransom demands ranging from $150,000 to $2 million.
  • Rapidly advanced from operational immaturity to a robust operation with Ransomware-as-a-Service offerings.

Threat Level & Status Breakdown

For nightspire · Based on incidents in selected period

3.5threat level
Aggressiveness8/ 10
Lethality0/ 10
Criticality2.2/ 10

Status Breakdown

Claimed17.6%42
First seenJun 2025
Last seenJun 2026
Avg ransom
Payment rate
Statusactive
Sophistication0
Last updatedJun 23, 2026

Recent activity

Monthly attack count for nightspire in the selected period

239Total attacks
62peak in Mar
19.9avg / month
↑ 10 vs first month
JunJulSepOctNovDecJanFebMarAprMayJun020406080

Intelligence

IOCs, YARA/Sigma rules, and related families for nightspire

  1. ad67031e2ca68764fe1a7d6632c02b02a299d59efb920710011a9a2ccf4399b7
  2. ce56ec0bea8f53b7cc7f938226e96d8668c66611
  3. c5f526cc62688cf34c49d098dab81e24e4294f832ada57433ef505d5ac6da8f3
  4. 2e07a4de9e6ba84728fbdf27384ea0b9
  5. 32e10dc9fe935d7c835530be214142041b6aa25ee32c62648dea124401137ea5
  6. 94dd3315fca4c31ef61b7865c3b8983f
  7. bde50a42efc079edde1a314243ad339db2d42e343fbbcd39117803b0f5960355
  8. 94f73b5dc06ba6705fcef3e759413a747049c2949a0c2e44afc03b2f9989cf73
  9. 7ffb8a403a298e5b0d5f8bf3c6d119e6
  10. 0e31379dcb838b619ec1b44dda3fc4cc20596764
  11. c3804d1329b55a37bfa2f835e1e9bbc7bdb2b260f8e3627c06e02c9f52685d44
  12. 20cb8d8216061545b0b31ec8bd5f42de
  13. e275b8a02bf23b565bdaabadb220b39409eddc6b8253eb04e0f092d697e3b53d
  14. 69f5515ff3f554233840ad2f2397b345f955013017a9ae14ed4e762f52d936af
  15. f5da096e2ae6079c4670ddd6566244618056a22e
View full IOC feed500 total

TTPs & Attack Vectors

Tools, initial access, and MITRE ATT&CK techniques for nightspire

Other

T1486

T1486

T1490

T1490

T1078

T1078

T1046

T1046

T1021

T1021

T1562

T1562

T1059

T1059

T1105

T1105

T1005

T1005

T1071

T1071

T1027

T1027

T1080

T1080

Victims(200)

CompanyDomainCountryIndustryStatusDiscovered
Artistic Smilesartisticsmiles.orgUS United StatesRetail & E-Commerce
Unknown
4 days ago
legendsmn(Blue Ox, Paul Bunyan, Lumberjack Electric)legendsmn.comUS United StatesEnergy & Utilities
Unknown
7 days ago
Central Texas ***** *****Other
Unknown
9 days ago
Ri***** Co**** Europe S.r.l.
Unknown
9 days ago
G**** R****l*e
Unknown
10 days ago
A*** G*** A*S*NL Netherlands
Unknown
17 days ago
ASIA STRATEGICasia-strategic.comSG SingaporeProfessional Services
Unknown
17 days ago
B****S I******t***lProfessional Services
Unknown
10 days ago
Unique Litho, Incuniquelitho.comUS United StatesManufacturing
Unknown
17 days ago
Sheraton Miramar Resort El Gounaelgouna.comEG EgyptHospitality
Unknown
10 days ago
Guy E******* & F*******, P.AFinancial Services
Unknown
9 days ago
dean cosmetic dentistrydeancosmeticdentistry.comUS United StatesHealthcare
Unknown
7 days ago
K****** County. Mi**e**taUS United StatesGovernment & Defense
Unknown
11 days ago
GRIP Outreach For Youthgripyouth.comUS United StatesEducation
Unknown
17 days ago
Silsbee Police Departmentsilsbeeisd.orgUS United StatesGovernment & Defense
Unknown
11 days ago
Blue Nile Medical Centerbluenilemedical.comUS United StatesHealthcare
Unknown
11 days ago
basatamfibinvestmentsegypt.comEG EgyptProfessional Services
Unknown
about 1 month ago
Si**** West J*******CU CubaTechnology
Unknown
about 1 month ago
la familia adualt day centerlafamiliaadultdaycenter.comUS United StatesHealthcare
Unknown
about 1 month ago
Sierra West Jewelerssierra-west.comUS United StatesRetail & E-Commerce
Unknown
13 days ago

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