BlueNoroff
aka APT38, Sapphire Sleet, Stardust Chollima, BeagleBoyz, TA444
A North Korean group tied to the Reconnaissance General Bureau that specializes in stealing money. After hitting bank transfer systems, it now tricks crypto executives and developers with fake meetings and job offers.
- Alert level
- 1/ 5
- Reports & advisories (90 days)
- 0
- Known exploited CVEs
- 0
- Personal data leaked (disclosed)
- None confirmed
Attribution
- North Korean state-sponsored financially motivated group attributed to the Reconnaissance General Bureau — MITRE ATT&CK
How they attack
Entry
Fake online meetings
Like an 'investor' inviting you to a call and asking you to run a 'fix' for the broken audio, which is the trap.
Entry
Fake job offers and interviews
Like a recruiter with a dream job who asks you to open a 'test assignment' that is actually booby-trapped.
Goal
Stealing cryptocurrency
Like taking over the vault keeper's computer and opening the vault while pretending to be them.
Sources
Attributions are quoted as assessed by governments and security vendors. VulnPulse does not make attributions itself.
Leak counts only add up figures disclosed by the affected companies or authorities, never the attackers' own claims. We do not list victim names or link to leak sites.
The alert level is calculated automatically from reports and advisories in the last 90 days, known exploited vulnerabilities, and whether the group has targeted Japan.
Updated 2026-10-23 · daily