AsyncRAT distribution via TryCloudflare, Dropbox, and WSH infection chain
Malware Activity
Summary
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A multi-stage phishing chain is distributing AsyncRAT through TryCloudflare tunnels and Dropbox ZIP links, creating a persistent Windows infection path that ends with shellcode injection into explorer.exe. The initial Windows Script Host (WSH) payload downloads additional scripts from a WebDAV server, then stages batch files and a Python environment to extend execution. The activity matters because it uses trusted infrastructure and living-off-the-land tools to hide delivery, maintain persistence, and support remote access.
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Timeline
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14.01.2026 16:18 2 articles · 4mo ago
AsyncRAT delivery chain uses TryCloudflare and Dropbox
Technical Analysis UpdateA multi-stage phishing campaign distributes AsyncRAT through Dropbox ZIP links and TryCloudflare tunnels, using an internet shortcut file, a Windows Script Host initial payload, and follow-on scripts hosted on a WebDAV server. The infection chain stages a Python environment, establishes persistence through Windows startup folder scripts, and injects AsyncRAT shellcode into explorer.exe, while abusing Cloudflare free-tier infrastructure and other trusted services to evade detection.
Show sources
- Hackers Exploit c-ares DLL Side-Loading to Bypass Security and Deploy Malware — thehackernews.com — 14.01.2026 16:18
- Hackers Exploit c-ares DLL Side-Loading to Bypass Security and Deploy Malware — thehackernews.com — 14.01.2026 16:18