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This page is part of Threat Matrix, the public browser workspace for the main AdversaryGraph platform. Use it for ATT&CK pivots, actor and technique context, similarity leads, detection coverage review, and analyst-ready investigation paths.

Validation disclaimer: TTP overlap, actor similarity, generated summaries, and coverage findings are investigation leads, not attribution proof or operational validation without analyst review.

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G1021 · 20 ATT&CK techniques · 1 correlated reports

Cinnamon Tempest

Aliases: BRONZE STARLIGHT, Cinnamon Tempest, DEV-0401, Emperor Dragonfly

[Cinnamon Tempest](https://attack.mitre.org/groups/G1021) is a China-based threat group that has been active since at least 2021 deploying multiple strains of ransomware based on the leaked [Babuk](https://attack.mitre.org/software/S0638) source code. [Cinnamon Tempest](https://attack.mitre.org/groups/G1021) does not operate their ransomware on an affiliate model or purchase access but appears to act independently in all stages of the attack lifecycle. Based on victimology, the short lifespan of each ransomware variant, and use of malware attributed to government-sponsored threat groups, [Cinnamon Tempest](https://attack.mitre.org/groups/G1021) may be motivated by intellectual property theft or cyberespionage rather than financial gain.(Citation: Microsoft Ransomware as a Service)(Citation: Microsoft Threat Actor Naming July 2023)(Citation: Trend Micro Cheerscrypt May 2022)(Citation: SecureWorks BRONZE STARLIGHT Ransomware Operations June 2022)

Open interactive actor investigation

ATT&CK techniques

T1021.002T1047T1059.001T1059.003T1059.006T1078T1078.002T1080T1090T1105T1140T1190T1484.001T1543.003T1567.002T1572T1574.001T1588.002T1657

Correlated CTI and IR reports

Operation DragonRx — APT41 Full Attack Simulation
1200km CTI repository · explicit report mention

Continue the investigation

Interactive AdversaryGraph AdversaryGraph documentation CTI Analyst Field Manual Israel Threat Actors CTI Anomaly Detection Atlas Insider Threat Detection Guide 1200km Medium research

Attack tools, simulations and detection rules

Follow explicit source relationships into the reference modules. Linked procedures and detectors are not claims of live validation or actor attribution.

Cobalt Strike tool reference — Explicit actor uses software relationship in pinned ATT&CK
Impacket tool reference — Explicit actor uses software relationship in pinned ATT&CK
Sliver tool reference — Explicit actor uses software relationship in pinned ATT&CK
Rclone tool reference — Explicit actor uses software relationship in pinned ATT&CK
T1021.002 SMB/Windows Admin Shares simulation — Exact active technique ID
T1021.002 detection rules — Exact active technique ID; not actor-specific detector coverage
T1047 Windows Management Instrumentation simulation — Exact active technique ID
T1047 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.001 PowerShell simulation — Exact active technique ID
T1059.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.003 Windows Command Shell simulation — Exact active technique ID
T1059.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.006 Python simulation — Exact active technique ID
T1059.006 detection rules — Exact active technique ID; not actor-specific detector coverage
T1078 Valid Accounts simulation — Exact active technique ID
T1078 detection rules — Exact active technique ID; not actor-specific detector coverage
T1078.002 Domain Accounts simulation — Exact active technique ID
T1078.002 detection rules — Exact active technique ID; not actor-specific detector coverage
T1080 Taint Shared Content simulation — Exact active technique ID
T1080 detection rules — Exact active technique ID; not actor-specific detector coverage
T1090 Proxy simulation — Exact active technique ID
T1090 detection rules — Exact active technique ID; not actor-specific detector coverage
T1105 Ingress Tool Transfer simulation — Exact active technique ID
T1105 detection rules — Exact active technique ID; not actor-specific detector coverage
T1140 Deobfuscate/Decode Files or Information simulation — Exact active technique ID
T1140 detection rules — Exact active technique ID; not actor-specific detector coverage
T1190 Exploit Public-Facing Application simulation — Exact active technique ID
T1190 detection rules — Exact active technique ID; not actor-specific detector coverage
T1484.001 Group Policy Modification simulation — Exact active technique ID
T1484.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1543.003 Windows Service simulation — Exact active technique ID
T1543.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1567.002 Exfiltration to Cloud Storage simulation — Exact active technique ID
T1567.002 detection rules — Exact active technique ID; not actor-specific detector coverage
T1572 Protocol Tunneling simulation — Exact active technique ID
T1572 detection rules — Exact active technique ID; not actor-specific detector coverage
T1574.001 DLL simulation — Exact active technique ID
T1574.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1588.002 Tool simulation — Exact active technique ID
T1588.002 detection rules — Exact active technique ID; not actor-specific detector coverage
T1657 Financial Theft simulation — Exact active technique ID
T1657 detection rules — Exact active technique ID; not actor-specific detector coverage

Cyber Knowledge routes

These contextual routes explain behaviors associated with this ATT&CK group record. They support learning and investigation planning; they do not add attribution evidence.

Module 4 — Detection engineering and detection as code
Blue Team & Defensive Security · explicit-id Exploitability validation and laboratory exploit engineering
Vulnerability Research & Exploit Development · explicit-id Module 5 — Threat hunting
Blue Team & Defensive Security · explicit-name Windows endpoint and identity forensics
Digital Forensics & Incident Response (DFIR) · explicit-name Model and dependency supply-chain security
AI Security · explicit-name Weakness taxonomy and vulnerability identity
Vulnerability Research & Exploit Development · topic-match Data classification, storage, cryptography, keys, backup, and deletion
Cloud Security · topic-match Cloud logging, detection engineering, ATT CK, and response automation
Cloud Security · topic-match Research governance, authorization, and safety
Vulnerability Research & Exploit Development · topic-match Container image, registry, runtime, and host security
Cloud Security · topic-match Prompt injection, instruction hierarchy, and secure output handling
AI Security · topic-match Module 2 — The Intelligence Cycle Intelligence Types
Cyber Threat Intelligence (CTI) · topic-match