General

  • Target
    ExLoader_Installer (1).zip
  • Size 23.7MB
  • Sample260714-svsapsfw5n
  • SHA256 ed76f841d866a82c26d0f5b59a41ea89deef85d5819f3ba9e7dcb0212c073e0d
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      ExLoader_Installer (1).zip
    • Size 23.7MB
    • SHA256 ed76f841d866a82c26d0f5b59a41ea89deef85d5819f3ba9e7dcb0212c073e0d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    • Target
      ExLoader_Installer.exe
    • Size 173KB
    • SHA256 93006384d339208d7125662bd928722cb3d1ac08855d46fe4fa2d6579e1260f1
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Sets service image path in registry

      This determines the executable launched when a service starts. It can be used to establish persistence.

    • Uses Session Manager for persistence

      Creates Session Manager registry key to run executable early in system boot.

    • Checks computer location settings

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

    • 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

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Enumerates connected drives

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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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

MITRE ATT&CK Enterprise v16

Tasks