MedusaLocker
MedusaLocker is a ransomware operation known for double extortion, encrypting victim data and threatening to publish stolen data if victims do not pay. Reporting in the provided content states that it continued targeting manufacturing and critical infrastructure. The operation has been referenced in connection with incidents involving EDR-killer and defense-evasion tooling: ThrottleBlood was observed in MedusaLocker intrusions, and Seqrite reported that attackers in MedusaLocker attacks frequently used process-killing tools such as 0th3r_av5.exe to shut down antivirus monitoring. Additional reporting linked CardSpaceKiller to intrusions involving MedusaLocker, and noted that LockBit used a very similar service kill list to MedusaLocker. The content also references MedusaLocker in the context of custom cryptocurrency mixing services associated with ransomware-as-a-service ecosystems. No additional aliases or sub-groups are directly supported by the provided content beyond the name MedusaLocker.
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Tradecraft
47 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Recent activity
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Referenced as a threat actor/group in whose intrusions the ThrottleBlood tool appeared.
Ransomware activity associated with process-killing tools used to disable antivirus monitoring before payload execution.
Ransomware group observed deploying CardSpaceKiller during incidents.
Ransomware actor associated with double extortion; targets manufacturing and critical infrastructure.
The version that knows your environment.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.