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MITRE ATT&CK v15.1
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Data as of September 24, 2026 at 17:02 UTC
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MITRE ATT&CK G0006

PLA Unit 61398

View MITRE Group Page ↗
Aliases: APT1, Comment Crew, TG-8223
Official Attribution Source: U.S. Department of Justice Indictment (W.D. Pa., May 2014)

Key Facts

Jurisdiction
People's Republic of China
Geographic origin
Cases
1
Prosecution matters
Defendants
2
Indicted individuals
Sanctions
0
OFAC designations
  • Attributed Country: People's Republic of China.
  • ATT&CK Group Reference: G0006 (PLA Unit 61398).
  • Linked to 1 primary court prosecution records.
  • Identified 2 individually charged operatives.

Primary ATT&CK Techniques Employed

ATT&CK Techniques Mapped to PLA Unit 61398 Technique frequencies extracted from verified indictments for PLA Unit 61398. T1566.001 Spearphishing Attachment 1 incidents T1041 Exfiltration Over C2 Channel 1 incidents
Technique frequencies extracted from verified indictments for PLA Unit 61398.
ATT&CK Techniques Mapped to PLA Unit 61398
Technique Frequency
T1566.001 Spearphishing Attachment 1 incidents
T1041 Exfiltration Over C2 Channel 1 incidents

Prosecution Cases Attributed to This Actor

fugitive 2014-05-01

U.S. v. Sun Kailiang et al. (PLA Unit 61398 / APT1)

Historic first-ever criminal indictment against state military actors: five Chinese military officers in People's Liberation Army Unit 61398 charged with cyber espionage against Westinghouse, U.S. Steel, Alcoa, and the United Steelworkers union.

2 techniques View case →