Storm-0501
Storm-0501 is a financially motivated cybercriminal group that has been active since 2021, initially targeting US school districts with the Sabbath ransomware and later transitioning to a RaaS model deploying various ransomware strains, including Embargo. The group exploits weak credentials and over-privileged accounts to achieve lateral movement from on-premises environments to cloud infrastructures, establishing persistent backdoor access and deploying ransomware. They have utilized techniques such as credential theft, exploiting vulnerabilities in Zoho ManageEngine and Citrix NetScaler, and employing tools like Cobalt Strike and Rclone for lateral movement and data exfiltration. Storm-0501 has specifically targeted sectors such as government, manufacturing, transportation, and law enforcement in the United States.
CVEs in recent coverage
No CVEs named alongside this actor in the last 90 days.
Recent victims
No leak-site posts on record for this group.
ATT&CK techniques
Recent activity
No posts or advisories have named this actor recently.
References
- https://www.microsoft.com/en-us/security/blog/2024/09/26/storm-0501-ransomware-attacks-expanding-to-hybrid-cloud-environments/
- https://attack.mitre.org/groups/G1053
- https://cloud.google.com/blog/topics/threat-intelligence/sabbath-ransomware-affiliate/
- https://www.avertium.com/resources/threat-reports/in-depth-look-at-sabbath-ransomware-gang
- https://www.microsoft.com/en-us/security/blog/2025/08/27/storm-0501s-evolving-techniques-lead-to-cloud-based-ransomware/
From the MISP threat-actor galaxy, MITRE ATT&CK and RansomLook (CC BY 4.0). Activity is any post or advisory Watch Floor collected that names the actor or one of its aliases.