Threat actor
GREF
Last fetched
GREF is a threat actor tracked in WhisperGraph's MITRE ATT&CK corpus, observed using 46 techniques.
Description
GREF is a China-aligned APT group that has been active since at least March 2017. They are known for using custom backdoors, loaders, and ancillary tools in their targeted attacks. Recently, they have been attributed to two active Android campaigns that distribute the BadBazaar malware through malicious apps on official and alternative app stores. GREF has targeted Android users, particularly Uyghurs and other Turkic ethnic minorities outside of China, using trojanized versions of popular messaging apps like Signal and Telegram.
Techniques by tactic
Discovery
- T1007 · System Service Discovery
- T1016 · System Network Configuration Discovery
- T1018 · Remote System Discovery
- T1033 · System Owner/User Discovery
- T1049 · System Network Connections Discovery
- T1057 · Process Discovery
- T1069.002 · Domain Groups
- T1082 · System Information Discovery
- T1083 · File and Directory Discovery
- T1087.001 · Local Account
- T1087.002 · Domain Account
- T1614.001 · System Language Discovery
Attributed infrastructure
None published. WhisperGraph carries no ATTRIBUTED_TO edge to GREF today — this states the absence of a published link, not that GREF has no infrastructure.
References
© The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.
Related pages
Pivot from GREF into its techniques, tactics and any attributed infrastructure.
Queries
Resolves the slug to this actor, merging every duplicate node sharing the same name.
MATCH (a:ACTOR)
WHERE a.name =~ $pattern OR any(x IN a.aliases WHERE x =~ $pattern)
RETURN a.id AS id, a.name AS name, a.aliases AS aliases, a.description AS description,
a.references AS references, a.campaigns AS campaigns
LIMIT 25Techniques this actor uses, grouped by the tactic each one serves.
MATCH (a:ACTOR {name: $name})-[:USES_TECHNIQUE]->(t:ATTACK_PATTERN)
OPTIONAL MATCH (t)-[:USES_TACTIC]->(tac:ATTACK_PATTERN)
RETURN t.id AS techniqueId, t.name AS techniqueName, tac.id AS tacticId, tac.name AS tacticName
LIMIT 1000Infrastructure publicly attributed to this actor.
MATCH (n)-[:ATTRIBUTED_TO]->(a:ACTOR {name: $name})
RETURN labels(n)[0] AS kind, n.name AS name
LIMIT 25Or query Whisper from your own LLM workflow via the Whisper MCP server.