# MedusaLocker

> As of 2026-09-18, MedusaLocker is a threat actor tracked by Threadlinqs Intelligence across 4 threats spanning threat intel, ransomware, ransomware hacktivism. ATT&CK coverage spans 61 techniques across 15 tactics in 4 of 4 tracked threats. Most-observed techniques: T1133 (External Remote Services), T1190 (Exploit Public-Facing Application), T1078 (Valid Accounts).

- **Tracked threats:** 4
- **Categories:** THREAT_INTEL, RANSOMWARE, RANSOMWARE_HACKTIVISM
- **As of:** 2026-09-18

## ATT&CK techniques observed

61 techniques observed across 4 of 4 tracked threats. Tactics: Impact (9), Credential Access (7), Command and Control (6), Initial Access (5), Stealth (formerly Defense Evasion) (5), Exfiltration (4).

- [T1133](https://intel.threadlinqs.com/technique/T1133) External Remote Services — Initial Access — observed in 4 of 4 tracked threats
- [T1190](https://intel.threadlinqs.com/technique/T1190) Exploit Public-Facing Application — Initial Access — observed in 4 of 4 tracked threats
- [T1078](https://intel.threadlinqs.com/technique/T1078) Valid Accounts — Initial Access — observed in 3 of 4 tracked threats
- [T1490](https://intel.threadlinqs.com/technique/T1490) Inhibit System Recovery — Impact — observed in 3 of 4 tracked threats
- [T1005](https://intel.threadlinqs.com/technique/T1005) Data from Local System — Collection — observed in 2 of 4 tracked threats
- [T1021](https://intel.threadlinqs.com/technique/T1021) Remote Services — Lateral Movement — observed in 2 of 4 tracked threats
- [T1070](https://intel.threadlinqs.com/technique/T1070) Indicator Removal — Stealth (formerly Defense Evasion) — observed in 2 of 4 tracked threats
- [T1110](https://intel.threadlinqs.com/technique/T1110) Brute Force — Credential Access — observed in 2 of 4 tracked threats
- [T1486](https://intel.threadlinqs.com/technique/T1486) Data Encrypted for Impact — Impact — observed in 2 of 4 tracked threats
- [T1555](https://intel.threadlinqs.com/technique/T1555) Credentials from Password Stores — Credential Access — observed in 2 of 4 tracked threats
- [T1566](https://intel.threadlinqs.com/technique/T1566) Phishing — Initial Access — observed in 2 of 4 tracked threats
- [T1567](https://intel.threadlinqs.com/technique/T1567) Exfiltration Over Web Service — Exfiltration — observed in 2 of 4 tracked threats
- [T1567.002](https://intel.threadlinqs.com/technique/T1567.002) Exfiltration to Cloud Storage — Exfiltration — observed in 2 of 4 tracked threats
- [T1685](https://intel.threadlinqs.com/technique/T1685) Disable or Modify Tools — Defense Impairment — observed in 2 of 4 tracked threats
- [T1003](https://intel.threadlinqs.com/technique/T1003) OS Credential Dumping — Credential Access — observed in 1 of 4 tracked threats

## Tracked threats

- [France Dark Web Threat Landscape: Ransomware and Hacktivist Activity Surges 4x Over 24 Months](https://intel.threadlinqs.com/threat/TL-2026-2564) — HIGH
- [Team Cymru Infrastructure Analysis: Seven Active Ransomware Gangs (Akira, DragonForce, Clop, MedusaLocker, Qilin, INC Ransom, Lynx) Abuse Dual-Use Tools and Exploit SonicWall, Gladinet CentreStack, and FortiGate Devices](https://intel.threadlinqs.com/threat/TL-2026-2517) — HIGH
- [France Threat Landscape: Qilin/MedusaLocker/LockBit Ransomware and NoName057(16) Hacktivist DDoS Campaign Amid 4x Dark Web Activity Surge](https://intel.threadlinqs.com/threat/TL-2026-1652) — HIGH
- [Identity Attacks Overtake Exploits as Top Ransomware Cause (Sophos State of Ransomware 2026)](https://intel.threadlinqs.com/threat/TL-2026-1398) — INFO

## Related CVEs

4 CVEs referenced by tracked MedusaLocker activity.

- [CVE-2025-30406](https://intel.threadlinqs.com/cve/CVE-2025-30406)
- [CVE-2025-14611](https://intel.threadlinqs.com/cve/CVE-2025-14611)
- [CVE-2025-11371](https://intel.threadlinqs.com/cve/CVE-2025-11371)
- [CVE-2024-40766](https://intel.threadlinqs.com/cve/CVE-2024-40766)

## Full data

Infrastructure, IOC values and detection queries (Splunk SPL / Microsoft KQL / Sigma) require the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp

Canonical: https://intel.threadlinqs.com/actor/MedusaLocker