General

  • Target
    250206-1yfp3sylcv_pw_infected.zip
  • Size 3.0MB
  • Sample260810-yee84agk2w
  • SHA256 dd4a8c3d4afbe1cc1bd6d76bb20c5049ab48c107fee434232a6cc30bd96204c8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      WinGas.exe
    • Size 3.1MB
    • SHA256 138fbad4bdec2f62d7c0e60e4317023b5b6c0009371885b0b14090b1ce2c339f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Blocks application from running via registry modification

      Adds application to list of disallowed applications.

    • 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 Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Modifies system executable filetype association

    • Enumerates connected drives

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

    • Hijack Execution Flow: Executable Installer File Permissions Weakness

      Possible Turn off User Account Control's privilege elevation for standard users.

    • Writes to the Master Boot Record (MBR)

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

    • Drops file in System32 directory

    • Executes a VBScript file via the Windows Script Host.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks