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Analysis

  • max time kernel
    150s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28/05/2024, 03:09

General

  • Target

    cbcfdd32a836531eedf06b413278288bdd85316fe3c6a148814084823beb09b9.exe

  • Size

    2.5MB

  • MD5

    5ca005a9e762448e7f22ac187729be56

  • SHA1

    28d031b5ad6412280afbeec70c0fece85d2e86b7

  • SHA256

    cbcfdd32a836531eedf06b413278288bdd85316fe3c6a148814084823beb09b9

  • SHA512

    ba3f933b42c14a369b7b9e22906bf56b328c686cfce6709ffaffe05d765a63c78e16d019ad072754b95d3e6ff2922c673b19db4af720981896dee9acec579289

  • SSDEEP

    49152:MxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxa:Mxx9NUFkQx753uWuCyyxa

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Detects executables packed with Themida 17 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
  • 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\cbcfdd32a836531eedf06b413278288bdd85316fe3c6a148814084823beb09b9.exe
    "C:\Users\Admin\AppData\Local\Temp\cbcfdd32a836531eedf06b413278288bdd85316fe3c6a148814084823beb09b9.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
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2796
    • \??\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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:368
      • \??\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
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3516
        • \??\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
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3416
          • \??\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
            • Suspicious use of SetWindowsHookEx
            PID:4692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    2.5MB

    MD5

    09b77876c4cd932646180778a3662425

    SHA1

    9b409177739773ed4e3756c371c982d446c0d5a1

    SHA256

    482815e20c4cf1c9e03a8cd8d7a42050d0fd536dc884fa6d767ad5e1c3b6491b

    SHA512

    59e4f378b31a36e26a6e66882bd4ed5d183ef4c8195ba86a4a684eff6c1ab328ccec010c94f38199f9d4b74655b87e74fbba2a8a7e7892fafcbba81779babe13

  • C:\Windows\Resources\spoolsv.exe

    Filesize

    2.5MB

    MD5

    8ebdb6ba2292810fb58b47b2acbe55fb

    SHA1

    a1d737c36c125501565106f3f584fe9043d3d880

    SHA256

    650c022570a01aa4092a8d0f6f8566936b699d8d7a2a7aaebaa72a73bc5075e1

    SHA512

    d6dfd51d6cf7fcd00a2598d3b5b133d24e7ad9b977737cca8a2c13b9749622b4ccc2225b8fed264c347ff45812d6ef1243319bb07ba2d44179b82e632b7eafb6

  • C:\Windows\Resources\svchost.exe

    Filesize

    2.5MB

    MD5

    2350cf937d4636fc85cf0ae2d96b5ccb

    SHA1

    ab341326f542a319b8474c3e46d3c8a9d57bfa50

    SHA256

    e4121caefb01be4f334d641b57ac9e7537e1df4a16ca59a3afbb7e4682feca6f

    SHA512

    e51defbedd752737fd6f0b86ae6eb6809b4370afb24d03d024af5d752207bc44ede65baaf5ab6931f83148a78b547f7a5133d34477538293ecb2976220b31128

  • memory/368-43-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/368-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/368-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/368-10-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2796-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/2796-1-0x0000000077DC4000-0x0000000077DC6000-memory.dmp

    Filesize

    8KB

  • memory/2796-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3416-44-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3416-28-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3416-62-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3416-66-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3516-41-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/3516-19-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4692-38-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB

  • memory/4692-33-0x0000000000400000-0x0000000000A0E000-memory.dmp

    Filesize

    6.1MB