State-backedChina
Storm-0558
0mentions, 7 days
0mentions, 30 days
nonelast mentioned
Storm-0558 is a China-based threat actor with espionage objectives. While there are some minimal overlaps with other Chinese groups such as Violet Typhoon (ZIRCONIUM, APT31), Microsoft maintain high confidence that Storm-0558 operates as its own distinct group
Targets: Government, United States, Germany
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.
Recent activity
No posts or advisories have named this actor recently.
References
- https://www.microsoft.com/en-us/security/blog/2023/07/14/analysis-of-storm-0558-techniques-for-unauthorized-email-access/
- https://www.wiz.io/blog/storm-0558-compromised-microsoft-key-enables-authentication-of-countless-micr
- https://msrc.microsoft.com/blog/2023/09/results-of-major-technical-investigations-for-storm-0558-key-acquisition/
- https://www.bsi.bund.de/DE/Themen/Unternehmen-und-Organisationen/Cyber-Sicherheitslage/Analysen-und-Prognosen/Threat-Intelligence/Aktive_APT-Gruppen/aktive-apt-gruppen_node.html
- https://blogs.microsoft.com/on-the-issues/2023/07/11/mitigation-china-based-threat-actor/
- https://msrc.microsoft.com/blog/2023/07/microsoft-mitigates-china-based-threat-actor-storm-0558-targeting-of-customer-email/
- https://www.youtube.com/watch?v=khywfhJv4H8
- https://www.cisa.gov/sites/default/files/2024-04/CSRB_Review_of_the_Summer_2023_MEO_Intrusion_Final_508c.pdf
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.