Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    10/10/2024, 13:18

General

  • Target

    c7465f1732610d442228a422d7521fdf475f0707f6ff1cc28ea3cc7b7477911dN.exe

  • Size

    2.5MB

  • MD5

    99ada45342214680ac3d2bde8dc00680

  • SHA1

    2a03e4d3b3e3e0520bd9b662a519064cb7ace5ad

  • SHA256

    c7465f1732610d442228a422d7521fdf475f0707f6ff1cc28ea3cc7b7477911d

  • SHA512

    85954a4c8f4487123154c97ad6043b4c68844dcb9358075cfbc150663fad8709ab9ac3b4a0e19e8875feb19f173bfeabf630e750db553fdd9ed43bff64f13dac

  • SSDEEP

    49152:8xmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyx8:8xx9NUFkQx753uWuCyyx8

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
  • Loads dropped DLL 4 IoCs
  • Themida packer 18 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 7 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c7465f1732610d442228a422d7521fdf475f0707f6ff1cc28ea3cc7b7477911dN.exe
    "C:\Users\Admin\AppData\Local\Temp\c7465f1732610d442228a422d7521fdf475f0707f6ff1cc28ea3cc7b7477911dN.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • 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:2232
    • \??\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
      • Loads dropped DLL
      • 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:2784
      • \??\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
        • Loads dropped DLL
        • 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:2776
        • \??\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
          • Loads dropped DLL
          • 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: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2636
          • \??\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:2740
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 13:20 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:340
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 13:21 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2516
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2596

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      2.5MB

      MD5

      7f40b68cf76aaf8ccb3fd52c8654b484

      SHA1

      5579337ea51a3565f5728de90a70deaf56941670

      SHA256

      0da1e51703cbbd4ce9605304bf7414504960d0dcbbf826afe65daf1a806cc77e

      SHA512

      b878c4a9dc78a6aa1a68383f8e6f5dc5995fc0fd39d4d42ff36095e9146ad4affa9c8b3410c7509d7335f750b33eeeb7ea8655492b543de9a73effa082c18852

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.5MB

      MD5

      a57d38391d724a1e984a69e9b95d11ce

      SHA1

      31b5dc3ca1e7fb3d1d9917802f2162e68f84e32b

      SHA256

      ab05bc0b813beb60b242fd5a106149c37cfbdbeeb989859e23dd6979fd03d66c

      SHA512

      00b85f91b0fce7d341d5bf67dfa7daba1d5bc4f3bd217ed95f027fba9e75546833eacbb864b7e8833e082b71ec73c74d9ecc4a717a0ffc6f461316568ca35b2f

    • \Windows\Resources\svchost.exe

      Filesize

      2.5MB

      MD5

      5a022e019f76ed7569c6df669b33e873

      SHA1

      469fff44a7aaaa44078e20406a713fe2a74b2e53

      SHA256

      8324389099b657540ee75130bc3fc9777f0c15c4dc3dca1267e56f6992b0b95a

      SHA512

      14e1892810e97b7420ed421c9ad8cbc1d8b53862e2e999729f4c8dc30694b53d408ce26adc26285bda024b81f63ab9cad982c40722b0f657f48289818357300d

    • memory/2232-1-0x0000000077AD0000-0x0000000077AD2000-memory.dmp

      Filesize

      8KB

    • memory/2232-0-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2232-52-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2232-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-66-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-54-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-35-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2740-48-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2740-46-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-23-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-50-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-34-0x00000000035A0000-0x0000000003BAE000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-20-0x0000000003700000-0x0000000003D0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-53-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-11-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2784-67-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB