Introduction
Emotet has evolved significantly since its first appearance in 2014. In this deep dive, we analyze the latest variant's evasion techniques, persistence mechanisms, and C2 infrastructure.
Static Analysis
Using YARA rules and PE analysis, we first examine the binary's structure without executing it.
Dynamic Analysis
Running the sample in our isolated Cuckoo sandbox reveals several interesting behaviors:
- Registry key creation for persistence
- Process injection into explorer.exe
- Encrypted C2 communication over port 443
Conclusion
This variant demonstrates increasing sophistication in evasion techniques. Organizations should update their YARA signatures and monitor for the listed IOCs.