threat actor · Iran
Tortoiseshell
19 techniques · 1 software
Out of date: the sync last ran 3 hours ago. Newer CVEs and scores may be missing from the map.
The strips, in order: the CVEs it is reported to exploit by weakness class and by vendor, the techniques ATT&CK says it uses by tactic, its malware and tools, then who it targets. Each square is one record.
Open Tortoiseshell's actor pageCURIUM is an Iranian threat group, first reported in September 2019 and active since at least July 2018, targeting IT service providers in the Middle East. CURIUM has since invested in building relationships with potential targets via social media over a period of months to establish trust and confidence before sending malware. Security researchers note CURIUM has demonstrated great patience and persistence by chatting with potential targets daily and sending benign files to help lower their security consciousness.
Source: MITRE ATT&CK, G1012. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.
- Also known as
- IMPERIAL KITTEN, Yellow Liderc, TA456, DUSTYCAVE, Crimson Sandstorm, Cuboid Sandstorm, Smoke Sandstorm, CURIUM, HOUSEBLEND, DEV-0228
- Origin
- Iran
- Suspected sponsor
- Iran (Islamic Republic of)
- Motivation
- espionage
- Kind
- state
- MITRE ATT&CK
- G1012
- On record in
- CyberSIXT · ATT&CK G1012 · MISP Galaxy
Data as of 2026-11-14. CVE List through 2026-11-14 · EPSS of 2026-11-13 · CISA KEV checked 2026-11-14. Sources: MITRE ATT&CK (© The MITRE Corporation, reproduced and distributed with its permission), the MISP Galaxy (CC0), and CyberSIXT's own coverage.