Potential Vivaldi_elf.DLL Sideloading

SigmaHQ Detections@sigmaHQ

•updated Oct 23, 2025•0•13

Detects potential DLL sideloading of "vivaldi_elf.dll" when it is loaded by an executable other than the legitimate Vivaldi browser application. This technique can be used for persistence, defense evasion, and privilege escalation by tricking a legitimate application into loading a malicious DLL.