Skip to main content
Published Feb 23, 2023 | Updated Jan 17, 2024

TrojanDownloader:Win64/TwoDash!dha

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

TrojanDownloader:Win64/TwoDash!dha is a covert malware variant, seamlessly blending trojan and downloader characteristics. TwoDash collects system information, then connects to a hard-coded command and control (C2) server on port 9443. Once connected, TwoDash sends the collected information to the C2 server. TwoDash downloads and installs various programs, including additional malware, onto a compromised device without the user’s explicit consent.

To mitigate the issue, follow these steps:

  • Apply security updates promptly, especially for the specified vulnerabilities, on all applications and operating systems. Consult the Microsoft Security Update Guide for comprehensive information on available Microsoft Security updates.
  • Follow the principle of least privilege and maintain credential hygiene. Avoid using domain-wide, admin-level service accounts. Restrict local administrative privileges to mitigate the potential installation of remote access trojans (RATs) and other undesirable applications.
  • Network segmentation is useful in constraining the propagation of malware infections. The process involves partitioning a network into smaller segments, effectively confining an infection to a single segment rather than permitting its unrestricted spread across the entire network.
  • Promote the use of Microsoft Edge and other web browsers that support SmartScreen, a feature identifying and blocking malicious websites, including phishing sites, scam sites, and those hosting exploits or malware.
  • Block the launch of downloaded executable content by disabling JavaScript and VBScript.
Follow us