PROMETHIUM extends global reach with StrongPity3 APT

The PROMETHIUM threat actor — active since 2012 — has been exposed multiple times over the past several years.. However, this has not deterred this actor from continuing and expanding their activities. By matching indicators such as code similarity, command and control (C2) paths, toolkit structure and malicious behavior, Cisco Talos identified around 30 new C2 domains. We assess that PROMETHIUM activity corresponds to five peaks of activity when clustered by the creation date month and year.
Talos telemetry shows that PROMETHIUM is expanding its reach and attempts to infect new targets across several countries. The samples related to StrongPity3 targeted victims in Colombia, India, Canada and Vietnam. The group has at least four new trojanized setup files we observed: Firefox (a browser), VPNpro (a VPN client), DriverPack (a pack of drivers) and 5kPlayer (a media player).
Talos could not pinpoint the initial attack vector, however, the use of trojanized installation files to well-known applications is consistent with the previously documented campaigns. This leads us to believe that just like in the past, the initial vector may be either a watering hole attack or in-path request interception like mentioned in a CitizenLab report from 2018. This group mainly focuses on espionage, and these latest campaigns continue down the same path. The malware will exfiltrate any Microsoft Office file it encounters on the system. Previous research even linked PROMETHIUM to state-sponsored threats. The fact that the group does not refrain from launching new campaigns even after being exposed shows their resolve to accomplish their mission.

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