This article details a new mobile malware built off of a previous infamous piece of malware. This Trojan named ERMAC targets users financial data. It steals users contact info, text messages, open arbitrary applications, and also triggers and overly for a multitude of financial apps to steal the login credentials. The roots of the malware are suspected to stem from the Cerberus malware, which was another banking Trojan that affected users not too long ago.
https://thehackernews.com/2021/09/new-android-malware-steals-financial.html
This article raises an interesting point about malware source code leaks. As evidenced by this latest issue, bad actors can iterate on past designs and launch new attacks. On the other hand, such disclosures help to stem the spread of the malware.