Analysis

  • max time kernel
    150s
  • max time network
    132s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    02-06-2024 11:52

General

  • Target

    loader.exe

  • Size

    4.1MB

  • MD5

    9ecdc9ed1bea6c226f92d740d43400b9

  • SHA1

    b5b5066cd4284733d8c3f3d7de3ca6653091ae10

  • SHA256

    60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c

  • SHA512

    30bc705a2438288e3647d5adfc6119d751823970972b9c6b39a60384a2b7ac261986026b8d1c0b0ca7ee3d7e95363c97b873fdc5fad4096c903cb4e15bf57e43

  • SSDEEP

    98304:vnUGAC+hqc8lqvdzw2nsNKYYURyc9JirsN4JzmUPj:PTn2qcUzp6UYeJRCxPj

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Themida packer 10 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\loader.exe
    "C:\Users\Admin\AppData\Local\Temp\loader.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5068
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4420
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD5
        3⤵
          PID:5016
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:5012
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:424

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/5068-0-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-1-0x00007FFFAA288000-0x00007FFFAA28A000-memory.dmp

          Filesize

          8KB

        • memory/5068-3-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-4-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-2-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-5-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-7-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-8-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-6-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-9-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB

        • memory/5068-13-0x00007FF782820000-0x00007FF7832BF000-memory.dmp

          Filesize

          10.6MB