What's clever: they hijack legitimate accounts to abuse trust relationships—victims receive malware from known contacts. Astaroth uses fileless techniques and Living-off-the-Land binaries (LOLBins) to evade detection, making it persistent even in monitored environments. Sophos tracking shows this campaign specifically targets financial data and credentials across Latin America. The social engineering vector through compromised messaging apps bypasses most email security controls.
Source: Sophos