If you are looking for a "piece" of code or information regarding XWorm 3.1, it is widely recognized as a Remote Access Trojan (RAT). Security research identifies it as a .NET-based malware used for remote command execution, data exfiltration, and initiating DDoS attacks.

6.2 Host-Based Detection

• Process Anomalies: Any .NET process executing from %AppData% or %Temp% with network connections to suspicious IP ranges.
• YARA Rules for XWorm 3.1:

  rule XWorm_3_1_Strings 
      strings:
          $s1 = "XWorm_MUTEX" wide ascii
          $s2 = "hVNC Server Started" wide
          $s3 = "cmdManager::ExecuteCommand" fullword ascii
      condition:
          uint16(0) == 0x5A4D and (all of them)
  Remember: If you encounter a suspected XWorm 3.1 infection, do not simply delete the file. Perform a full forensic capture—memory dump, network logs, and registry snapshots—to identify the initial vector and prevent reinfection.
  
  YARA rules capturing packer signatures and embedded strings.
  Code similarity analysis using fuzzy hashing (ssdeep) and import table heuristics.
  7.2 Dynamic analysis
  Sandbox behavior fingerprints: sequence of system calls, API usage graphs, persistence actions.
  eBPF-based host monitoring to detect in-memory unpacking and suspicious syscalls.
  7.3 Network-based detection
  Flow-level anomalies: small periodic encrypted beacons, unusual TLS SNI patterns.
  DNS overuse, atypical DoH endpoints, and use of cloud storage for C2.
  7.4 Machine learning detectors
  Feature set: syscall frequency, TLS fingerprinting, process lineage, file system events.
  Model: gradient-boosted trees with SHAP-based explainability; achieved high AUC in lab tests.
  7.5 Correlation rules
  Cross-telemetry rules linking new service creation + outbound TLS to cloud storage + process hollowing.
  
  Use the new YAML workflow controls
  xworm 3.1 — What it is, why it matters, and practical tips
  xworm 3.1 is the latest minor release in the xworm family: a compact, cross-platform command-line toolkit for automated network reconnaissance and payload delivery workflows. This release focuses on stability, better module isolation, and a small set of new features that improve usability for pentesters, red‑teamers, and automated testing pipelines.
  and schedules a task (often named "Nafifas") to run every minute. It checks for antivirus products in the root\SecurityCenter2
  Often distributed via malicious email attachments (like PDFs or Word docs) that exploit vulnerabilities such as Follina (CVE-2022-30190) C2 Communication:
  XWorm 3.1 is a versatile Remote Access Trojan (RAT) known for its extensive set of surveillance and destructive capabilities. Key features of System Monitoring and Surveillance Screen Recording