Storm-2603
aka Warlock, GOLD SALEM, CL-CRI-1040
A group tracked by Microsoft that deploys the Warlock ransomware. In July 2025 it was seen exploiting flaws in companies' own SharePoint servers.
- Alert level
- 2/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 1
- Personal data leaked (disclosed)
- None confirmed
Attribution
- Assessed with moderate confidence to be a China-based actor — Microsoft
Exploited vulnerabilities and targeted products
If you run any of these products, first make sure they are updated to a fixed version.
How they attack
Entry
Exploiting on-premises SharePoint
Like entering through a defect in the door of the shared records room (self-hosted SharePoint) that hasn't been fixed yet.
Inside
Copying the master key to stay
Like making a mold of the master key so they can still get in after the door is fixed.
Goal
Locking files for ransom
Like padlocking every shelf in the records room and charging for the keys.
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-23 · daily