The four features of this adversary's intrusions under the Diamond Model — adversary, capability, infrastructure, victim — assembled from tracked data; pivot from any vertex to the others.
Adversary5
Who is behind the activity — operator vs. customer.
UNC1549 / TA455TA455Smoke SandstormYellow Dev 13BOHRIUM
Capability7
Tradecraft, techniques, and tooling the adversary employs.
7 ATT&CK techniquesCommand and ControlResource DevelopmentExecutionExfiltration
Infrastructure
Physical/logical infrastructure used to deliver capability (C2, domains, relays).
No infrastructure indicators correlated in Radar yet.
Operator ↔ CustomerOperator (intrusion crew) acting for a Customer (sponsoring interest) — attribution separates the two.
Honesty note
Attribution ≠ confirmation. UNC1549 / TA455 is linked here via TTP overlap and shared infrastructure — not confirmed by original-source reporting. Treat this as a working hypothesis, not a settled fact.
The actor's techniques grouped into kill-chain phases — a partial order across phases; techniques within a phase are co-occurring, not sequenced. Export opens in CTID's Attack Flow Builder.
7 techniques across 5 of 7 stages · 4 of 6 pre-objective stages show known tradecraft — each a chance to break the chain before Actions on Objectives.
1Reconnaissance
2Weaponization2
T1583.001T1585.001
3Delivery1
T1566.003
4Exploitation1
T1204.002
5Installation
6Command & Control2
T1102T1572
7Actions on Objectives1
T1041
Honesty note
Phase groupings reflect ATT&CK tactic classification, not a confirmed operational timeline for UNC1549 / TA455 — see the competing-hypotheses breakdown for how confident this attribution really is.