Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    26-04-2024 08:25

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 12 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 12 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:2340
    • 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:2512
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\loader.exe" MD5
        3⤵
          PID:2720
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:2952
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:2524

        Network

        MITRE ATT&CK Matrix ATT&CK v13

        Defense Evasion

        Virtualization/Sandbox Evasion

        1
        T1497

        Discovery

        Query Registry

        2
        T1012

        Virtualization/Sandbox Evasion

        1
        T1497

        System Information Discovery

        2
        T1082

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/2340-0-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-1-0x0000000077850000-0x00000000779F9000-memory.dmp
          Filesize

          1.7MB

        • memory/2340-2-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-3-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-4-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-5-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-6-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-7-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-8-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-17-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-19-0x0000000077850000-0x00000000779F9000-memory.dmp
          Filesize

          1.7MB

        • memory/2340-20-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-26-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB

        • memory/2340-29-0x000000013F140000-0x000000013FBDF000-memory.dmp
          Filesize

          10.6MB