UnclassifiedIdeologyAdvanced sophistication
UNK_ColtCentury
UNK_ColtCentury is a China-attributed threat actor group with an ideological motive, tracked by Brandefense. It targets 3 sectors, including Government and Technology, in 16 countries, including the United States and the United Kingdom. It uses 3 MITRE ATT&CK techniques.
Also known as
- TAG-100
- Storm-2077
- RedNovember
- Origin
- China
- Techniques
- 3
- Exploited CVEs
- No CVE data
- First seen
- Jan 1, 2024
- Record updated
Who They Target.
Sectors · 3
About UNK_ColtCentury.
A China-aligned cluster that sends benign emails to legal personnel at a Taiwanese semiconductor organization to build trust and deliver a remote access trojan.
Last updated Sep 11, 2026. Compiled by Brandefense technologies from structured threat intelligence and reviewed by Brandefense analysts. Techniques follow the MITRE ATT&CK framework.