Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-08-2024 22:07

General

  • Target

    4c4ad3168ff823c050f984b5e2c69810N.exe

  • Size

    2.5MB

  • MD5

    4c4ad3168ff823c050f984b5e2c69810

  • SHA1

    5e802e2f209c9f19c2fd8b7d5094317bad4cdb29

  • SHA256

    d8b6e5f27f7c466653896bc2e66519e3f3c358d0e715ebdc30f132cfe01f5891

  • SHA512

    4477b36dbfbccc5aaa96a8bec3a159339251dbd22141e899aa4e1f7b58c8d89b7d44a52c6d1e7b38eba7ff91882cda73f8a6087df672370d2d9038de8836a237

  • SSDEEP

    49152:JxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxR:Jxx9NUFkQx753uWuCyyxR

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs
  • Checks BIOS information in registry 2 TTPs 10 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Themida packer 17 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 5 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c4ad3168ff823c050f984b5e2c69810N.exe
    "C:\Users\Admin\AppData\Local\Temp\4c4ad3168ff823c050f984b5e2c69810N.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
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3196
    • \??\c:\windows\resources\themes\explorer.exe
      c:\windows\resources\themes\explorer.exe
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Identifies VirtualBox via ACPI registry values (likely anti-VM)
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4272
      • \??\c:\windows\resources\spoolsv.exe
        c:\windows\resources\spoolsv.exe SE
        3⤵
        • Identifies VirtualBox via ACPI registry values (likely anti-VM)
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2800
        • \??\c:\windows\resources\svchost.exe
          c:\windows\resources\svchost.exe
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Identifies VirtualBox via ACPI registry values (likely anti-VM)
          • Checks BIOS information in registry
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in System32 directory
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1940
          • \??\c:\windows\resources\spoolsv.exe
            c:\windows\resources\spoolsv.exe PR
            5⤵
            • Identifies VirtualBox via ACPI registry values (likely anti-VM)
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Checks whether UAC is enabled
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:1276

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\Resources\Themes\explorer.exe

    Filesize

    2.5MB

    MD5

    9b4ebff746d9944a764fd7185d1a93f0

    SHA1

    0589eff5ec4a053175fb43c299dbb2cadeb1e6ab

    SHA256

    3345dffd706149e58077b66ccdc42378ccf60b807ef56b8dc4915fd5d8eb4fda

    SHA512

    1bbef9d4a2459c23274a277715f050a283832a3820bac602ed79364f57d897ac0ec2f0243eb2d459654bc25be495b607bcf28b60facb314cc8c283c69fc5133b

  • C:\Windows\Resources\spoolsv.exe

    Filesize

    2.5MB

    MD5

    af71aa145e852ecd236dc7601c1d7d47

    SHA1

    33ac8e608d2a2fe4d8b82a4c335db7fe1542d817

    SHA256

    c6267eb07a8a9074f1c28f9fcb65302331834b5aaa2b42a92d9cc2f51894be6e

    SHA512

    6bbd5045c7e505f18479b6f3f7f42d443aad1a69906496e40110ec64a53c772121005f79670cbdf0cfac3c07aebd547311f1bc533b750e2b4077c72532d733a4

  • C:\Windows\Resources\svchost.exe

    Filesize

    2.5MB

    MD5

    b0acece7a6433ff2fa70dbd6aa40c514

    SHA1

    27b4352d6d0a7b2b92beef0211a952b1e5a33aae

    SHA256

    b36881252d71c479e1f9e3b4e88244e1231f50f04eecb6253f4b1ef410df61c8

    SHA512

    d16ba3e56237af5552ee1646c752369de2834119cb243e6d86669783e90a5e539653906b4ca380c9015857f9ed7ac6171aa77fee869e718b8f26446b405d7fc9

  • memory/1276-33-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1276-38-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1940-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1940-28-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/1940-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2800-19-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2800-41-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3196-1-0x0000000077654000-0x0000000077656000-memory.dmp

    Filesize

    8KB

  • memory/3196-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3196-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4272-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4272-10-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4272-45-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4272-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4272-57-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB