This write-up deconstructs the execution flow, evasion techniques, configuration artifacts, and network behavior of V1.032 based on behavioral patterns observed in similar downloader families (often linked to GX Group or cracked software bundles). Typical indicators for this variant (observed in the wild):
Disclaimer: This analysis is for educational and defensive cybersecurity purposes only. GX Downloader is a malicious tool classified as a dropper/downloader. Do not execute or deploy this software outside of a controlled, air-gapped lab environment. 1. Executive Summary GX Downloader Boot V1.032 represents a specific iteration (likely version 1, build 32) of a modular, multi-stage malware downloader. Unlike commodity loaders that fetch a single payload, "Boot" variants typically indicate a persistence-first, early-boot or user-mode autostart mechanism designed to survive reboots and establish a resilient foothold before deploying secondary malware (e.g., info stealers, RATs, or ransomware). gx downloader boot v1 032
"uid": "S-1-5-21-...", "ver": "v1.032", "os": "Windows 10 22H2", "arch": "x86", "av": "Windows Defender", "bootid": "32" Do not execute or deploy this software outside
| Attribute | Value | |-----------|-------| | Filename | setup.exe , update_boot.exe , gx_loader.v1.032.bin | | Size | ~180KB – 350KB | | PE Type | 32-bit Portable Executable (rarely 64-bit) | | Compiler | Microsoft Visual C++ 2015 / MinGW (obfuscated imports) | | Packer | Custom XOR + LZNT1 (not standard UPX) | | Entropy | 7.2+ (packed sections) | Unlike commodity loaders that fetch a single payload,
