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Threat actor

GrayBravo

Last fetched

GrayBravo is a threat actor tracked in WhisperGraph's MITRE ATT&CK corpus, observed using 0 techniques and also known as 1 other name.

Also known as

TAG-150

Description

TAG-150, also known as GrayBravo, is a sophisticated threat actor responsible for developing multiple custom malware families, including CastleLoader and CastleRAT, and operates a large-scale, multi-layered infrastructure. The group employs the ClickFix technique to distribute malware through phishing attacks that impersonate legitimate services, leveraging deceptive domains and fake repositories. Insikt Group has identified four distinct activity clusters associated with TAG-150, each targeting different victim profiles and utilizing unique TTPs.

Techniques by tactic

No ATT&CK techniques are recorded for GrayBravo in WhisperGraph.

Attributed infrastructure

None published. WhisperGraph carries no ATTRIBUTED_TO edge to GrayBravo today — this states the absence of a published link, not that GrayBravo has no infrastructure.

References

© The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

Related pages

Pivot from GrayBravo 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 25
Run yourself →

Techniques 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 1000
Run yourself →

Infrastructure publicly attributed to this actor.


MATCH (n)-[:ATTRIBUTED_TO]->(a:ACTOR {name: $name})
RETURN labels(n)[0] AS kind, n.name AS name
LIMIT 25
Run yourself →

Or query Whisper from your own LLM workflow via the Whisper MCP server.