General

  • Target
    patch_opsec.exe
  • Size 21.9MB
  • Sample260910-a9jm1ack9v
  • SHA256 d2b73af1ef87cf414ce5f61a9f7c0935cb52ab0dbcdcc0c7e4553103f4d1e707
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      patch_opsec.exe
    • Size 21.9MB
    • SHA256 d2b73af1ef87cf414ce5f61a9f7c0935cb52ab0dbcdcc0c7e4553103f4d1e707
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks BIOS information in registry

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

    • 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

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Adds Run key to start application

    • Badlisted process makes network request

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

    • 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

    • Enumerates connected drives

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks