Ransomware Intelligence / Groups / lamashtu

Ransomware group

lamashtu

Lamashtu is an extortion group that first appeared in April 2026, claiming attacks against organizations in France, Romania, and Thailand across energy, pharmaceutical, and film sectors; it has not yet been confirmed as operating actual file-encrypting ransomware rather than pure data-theft extortion.

  • 0claims, 7 days
  • 7claims, 30 days
  • 21claims, 90 days
  • 2026-04-12first seen
  • 2026-10-24last seen

These are claims posted by the group on its leak site, counted when we first see them. They are not confirmed incidents, and we never name a victim.

Activity, last 26 weeks

New leak-site claims per week.

Week of 2026-05-11: 5Week of 2026-05-18: 2Week of 2026-05-25: 2Week of 2026-06-01: 0Week of 2026-06-08: 1Week of 2026-06-15: 1Week of 2026-06-22: 0Week of 2026-06-29: 0Week of 2026-07-06: 0Week of 2026-07-13: 0Week of 2026-07-20: 0Week of 2026-07-27: 0Week of 2026-08-03: 0Week of 2026-08-10: 0Week of 2026-08-17: 0Week of 2026-08-24: 0Week of 2026-08-31: 0Week of 2026-09-07: 0Week of 2026-09-14: 0Week of 2026-09-21: 0Week of 2026-09-28: 10Week of 2026-10-05: 4Week of 2026-10-12: 0Week of 2026-10-19: 7Week of 2026-10-26: 0Week of 2026-11-02: 0
Claims per week, oldest to newest. Each bar is a full Monday-to-Sunday week; the newest bar is the current week so far.

Sectors claimed, last 90 days

  1. Manufacturing 8
  2. Professional services 5
  3. Construction 2
  4. Transportation and logistics 2
  5. Critical infrastructure 1
  6. Other 1
  7. Retail 1
  8. Technology 1

Countries claimed, last 90 days

  1. Germany 11
  2. France 3
  3. Spain 2
  4. Argentina 1
  5. Australia 1
  6. Italy 1
  7. Mexico 1
  8. United States 1

Vulnerabilities lamashtu exploits

Our sources do not attribute specific vulnerabilities to lamashtu yet.

70% of successful ransomware attacks use remote encryption (Microsoft, 2024): files on protected servers are encrypted over the network from a device the attacker controls. Read our remote encryption briefing →

Newest vulnerabilities used by any ransomware group (CISA KEV)
Added CVE Vendor / product Vulnerability
2026-08-18 CVE-2026-59310 Broadcom VMware vCenter Broadcom VMware vCenter Path Traversal Vulnerability
2026-08-05 CVE-2026-63077 JetBrains TeamCity JetBrains TeamCity Deserialization of Untrusted Data Vulnerability
2026-07-29 CVE-2026-20316 Cisco Secure Firewall Management Center (FMC) Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability
2026-07-14 CVE-2026-15410 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Code Injection Vulnerability
2026-07-14 CVE-2026-15409 SonicWall SMA1000 Appliances SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
2026-07-01 CVE-2026-45659 Microsoft SharePoint Server Microsoft SharePoint Server Deserialization of Untrusted Data Vulnerability
2026-06-25 CVE-2026-12569 PTC Windchill and FlexPLM PTC Windchill and FlexPLM Improper Input Validation Vulnerability
2026-06-12 CVE-2026-35273 Oracle PeopleSoft Enterprise PeopleTools Oracle PeopleSoft Enterprise PeopleTools Missing Authentication for Critical Function Vulnerability

Data sources: CISA KEV, Ransomchats, RansomLook, Ransomware.live, security news outlets · updated 14 hours ago

Sector, country and ransom-demand figures are SecuritySnares estimates made with a language model. Leak-site listings are claims by threat actors and are not independently verified; leak-site victims are never named unless they have disclosed the incident themselves. News headlines are the publishers' own reporting, shown as written and linked to the original. Methodology