Why Are You Texting Me? UNC3944 Leverages SMS Phishing Campaigns for SIM Swapping, Ransomware, Extortion, and Notoriety

Written by: Mandiant Intelligence

UNC3944 is a financially motivated threat cluster that has persistently used phone-based social engineering and SMS phishing campaigns (smishing) to obtain credentials to gain and escalate access to victim organizations. At least some UNC3944 threat actors appear to operate in underground communities, such as Telegram and underground forums, which they may leverage to acquire tools, services, and/or other support to augment their operations. This activity ove…