No need to RSVP: a closer look at the Tria stealer campaign securelist.com/tria-stea…

Since mid-2024, we’ve observed a malicious Android campaign leveraging wedding invitations as a lure to social-engineer victims into installing a malicious Android app (APK), which we have named “Tria Stealer” after unique strings found in campaign samples. The primary targets of the campaign are users in Malaysia and Brunei, with Malaysia being the most affected country.

Our investigation suggests that this campaign is likely operated by an Indonesian-speaking threat actor, as we found artifacts written in the Indonesian language, namely several unique strings embedded in the malware and the naming pattern of the Telegram bots that are used for hosting C2 servers.