ZLoader Malware Evolves with Anti-Analysis Trick from Zeus Banking Trojan
May 01, 2024
Malware / Cyber Threat
The authors behind the resurfaced ZLoader malware have added a feature that was originally present in the Zeus banking trojan that it's based on, indicating that it's being actively developed. "The latest version, 2.4.1.0, introduces a feature to prevent execution on machines that differ from the original infection," Zscaler ThreatLabz researcher Santiago Vicente said in a technical report. "A similar anti-analysis feature was present in the leaked Zeus 2.X source code, but implemented differently." ZLoader, also called Terdot, DELoader, or Silent Night, emerged after a nearly two-year hiatus around September 2023 following its takedown in early 2022. A modular trojan with capabilities to load next-stage payloads, recent versions of the malware have added RSA encryption as well as updates to its domain generation algorithm (DGA). The latest sign of ZLoader's evolution comes in the form of an anti-analysis feature that restricts the binary'