General

  • Target
    https://download2332.mediafire.com/7wle4oy112rgV_1Y_bfmFm8yEfxlMck9OXymWldsI9iF5G_gn0-EA1C9IMH7ImfTABE-ByKY7N91Hk_PIZLcZhGnXLi2dxhvXf9wQTQ887YWmAWSAn_tpjhpE9DDJzueuRosTkll5NnliTAmz6KEQCOje6PeaB5CsulXufdSdk5-/j0c9twno04emf9j/FL26.rar
  • Sample261017-mkbbjsdz5w

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://www.win-rar.com/fileadmin/winrar-versions/downloader/versions.xml

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    https://www.win-rar.com/fileadmin/winrar-versions/winrar/winrar-x64-723.exe

Targets

    • Target
      https://download2332.mediafire.com/7wle4oy112rgV_1Y_bfmFm8yEfxlMck9OXymWldsI9iF5G_gn0-EA1C9IMH7ImfTABE-ByKY7N91Hk_PIZLcZhGnXLi2dxhvXf9wQTQ887YWmAWSAn_tpjhpE9DDJzueuRosTkll5NnliTAmz6KEQCOje6PeaB5CsulXufdSdk5-/j0c9twno04emf9j/FL26.rar
    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • 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.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Network Share Discovery

      Attempt to gather information on host network.

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks