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Threat actor

TA584

Last fetched

TA584 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

Storm-0900

Description

TA584 is a prominent initial access broker tracked by Proofpoint since November 2020, known for its high-volume campaigns targeting organizations globally. The actor employs various TTPs, including macro-enabled Excel documents, aggressive URL filtering, and geo-fenced landing pages, while frequently changing lures and delivery methods to evade detection. In 2025, TA584 expanded its geographic targeting to include Germany and Australia, while also introducing new malware such as Tsundere Bot alongside XWorm with the "P0WER" configuration. The actor's campaigns are characterized by rapid turnover and deliberate variability, making static indicators less effective for detection.

Techniques by tactic

No ATT&CK techniques are recorded for TA584 in WhisperGraph.

Attributed infrastructure

None published. WhisperGraph carries no ATTRIBUTED_TO edge to TA584 today — this states the absence of a published link, not that TA584 has no infrastructure.

References

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

Related pages

Pivot from TA584 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.