Resubmissions

28/02/2024, 08:04

240228-jyrznseh7x9

23/02/2024, 14:57

240223-sblc2sbe259

General

  • Target
    691ef3891d5c155f2689647f2c441617.exe
  • Size 4.1MB
  • Sample240223-sblc2sbe25
  • SHA256 bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      691ef3891d5c155f2689647f2c441617.exe
    • Size 4.1MB
    • SHA256 bfbf60a70d1dbdd452f3b3bc819ce5804b5fc4baa028af084c2e84abaf73bb65
    • MD5 SHA1 SHA512 SSDEEP
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • 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.

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Writes to the Master Boot Record (MBR)

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

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks