General

  • Target
    Default-Dark-Mode-1.21.11-2026.4.0.zip
  • Size 735KB
  • Sample260621-trvr4ad13j
  • SHA256 d310100ca1c681a120f58bf458e25b135d1f93a3f5f6ab58fcdd6b3b69006ed5
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      LICENSE.txt
    • Size 20KB
    • SHA256 9e502ba75fd0fd30cea5497b438a4bc12f07f02bc932a7a6041fd6a18b8f46a0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Modifies WinLogon for persistence

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v16

Tasks