Threat Intelligence Tarot
Major Arcana · 10
North Korea (RGB)
G0094
risk 3/5
The Whisperer
Kimsuky
Thallium · Black Banshee · Velvet Chollima · APT-C-55
Think tanksAcademic researchersJournalistsSouth Korean governmentNuclear experts
Active since ~2012 · Intelligence collection, Policy research, Sanctions monitoring
It reads your emails about nuclear policy before you send the reply. It listens to your research conversations and reports to Pyongyang on what the outside world thinks of North Korea's next move. It is an ear pressed against the wall of every room that matters.
Tactics & Techniques
RCN
RDV
INI
EXC
PRS
PRV
EVA
CRD
DSC
LAT
COL
C2
EXF
IMP
T1566.001
Spearphishing Attachment
Initial Access
T1056.001
Keylogging
Collection
T1102
Web Service
Command and Control
T1114.002
Remote Email Collection
Collection
T1134
Access Token Manipulation
Privilege Escalation
Notable Operations
  • Operation Smoke Screen (South Korean targets)
  • COVID-19 vaccine researcher targeting
  • Nuclear policy think tank access
  • Operation Stolen Pencil (academic credential theft)
Defenses
Reversed: Their Weakness
Kimsuky's targeting is sometimes so narrow that victims can identify the operation simply by recognizing they received an email. Its precision is a double-edged sword - targeted actors are more likely to report it.

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Data sourced from MITRE ATT&CK. For educational purposes.