SYMBOLCOMMON_NAMEaka. SYNONYMS

TA4922  (Back to overview)


TA4922 is a Chinese-speaking cybercrime cluster that employs localized HR, payroll, tax, and invoice lures to deliver various malware families, including Atlas RAT, RomulusLoader, and SilentRunLoader. The actor conducts targeted email campaigns, often impersonating trusted authorities, to facilitate credential phishing and fraud. TA4922's operational tempo is high, with a focus on obtaining remote access for financial gain, and it has shown a rapid evolution in its malware arsenal. The group is also noted for using social engineering to shift communications from email to messaging platforms, enhancing their phishing efforts.


Associated Families
win.romulus_loader win.silent_run_loader win.atlas_rat

References
2026-06-03ProofpointProofpoint Threat Research Team
TA4922: The Suspected Chinese Crime Group is Going Global
Atlas RAT RomulusLoader SilentRunLoader TA4922
2026-03-25Hexastrike CybersecurityMaurice Fielenbach
Trust the Tunnel, Get the Trojan: Silver Fox Delivers Atlas RAT via Weaponized VPN Installers
Atlas RAT

Credits: MISP Project