(Writeup) LetsDefend Challenge - Excel 4.0 Macros February 14 2026 LetsDefend Challenge Macros Malware Medium Oletools Security_Analyst Writeup XLM XLMMacroDeobfuscator Analyzing a malicious Excel 4.0 (XLM) macro document using XLMMacroDeobfuscator and oletools to identify process execution, regsvr32 abuse, and DLL payload behavior.
