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Analysis

  • max time kernel
    120s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12/09/2024, 22:45

General

  • Target

    a04537c8928883ec8cf9f3ed9890b120N.exe

  • Size

    2.6MB

  • MD5

    a04537c8928883ec8cf9f3ed9890b120

  • SHA1

    8081424a63548f6c4e489b0bdd6f62010363b4e8

  • SHA256

    12d27fc722e34327a41d5da56a159fb2998e7cc679efe3143a4cae04162bb02b

  • SHA512

    f04b128681fa279cc3334c8203f52c953c995265876d0652d42d1e452611b43f8109bb66b3d3ef703f6a7e7b87461bd11e1f6b708e3f432c1694c9ed7ae568fa

  • SSDEEP

    49152:WXzhpDtKSK1cb8PGK+Tfuqmpc3elWo8GnQAsYZEVA:WXzhW148Pd+Tf1mpcOldJQ3/VA

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 19 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\a04537c8928883ec8cf9f3ed9890b120N.exe
    "C:\Users\Admin\AppData\Local\Temp\a04537c8928883ec8cf9f3ed9890b120N.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:2236
    • \??\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:2072
      • \??\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:2192
        • \??\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:2432
          • \??\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:2756
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:47 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2768
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 22:48 /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:2936

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Windows\Resources\Themes\explorer.exe

      Filesize

      2.6MB

      MD5

      3afbd12a6637abc40b83c7e841d362de

      SHA1

      c4f40aced90bf7d6c69811de8ec7626862b6dd1e

      SHA256

      8b83d10c5f25b59ed83fe30e926d750b3134aebf03f1c6d71c6ffc92c7397a2a

      SHA512

      281c4e5b4e21123d5efb5d202c205c43f96271de99bdd8d09113a08f0f72cb6716a58dcacacc8de86dbea51e39a6a01c8b2276dba44be0f093ea5fcc716e8e10

    • \Windows\Resources\spoolsv.exe

      Filesize

      2.6MB

      MD5

      027bf8e6e3782bca82d8377d0dc0c620

      SHA1

      08288826c51a13a2b5c2c239f4bc0efe9f9003ce

      SHA256

      d7dd092e59cf4d98882cda6dd5974fa889fae8cfbb4d537d72f6ca5564bd40dd

      SHA512

      56860cf2abe5b0621b1658a4081235e0c5ed863c944d92b66379c6bd4793c6b086f17e4ad6ab281d0df4079db5461759f85600e26c46f3a2a32d7fe1118f3a7f

    • \Windows\Resources\svchost.exe

      Filesize

      2.6MB

      MD5

      457c78bf6c72f8e35491b97a964436b2

      SHA1

      c84b76ac402f90171658013443e3f92b589b512d

      SHA256

      aa589c1269327e6d824d8757694b2128a3d0d9b8142929954f91345d8b451728

      SHA512

      eb90fdbba1d5d8cd3b5a97e2ce50afc1d8143cd1f028770bec8e2f0589fec0ac818eec16576f40a27674dab682f7af6ad70e150949f938ba9e7c1d537887c392

    • memory/2072-55-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2072-69-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2072-12-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2072-65-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2072-21-0x00000000038C0000-0x0000000003ED6000-memory.dmp

      Filesize

      6.1MB

    • memory/2072-56-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2192-34-0x0000000003550000-0x0000000003B66000-memory.dmp

      Filesize

      6.1MB

    • memory/2192-52-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2192-24-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-54-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-44-0x0000000003730000-0x0000000003D46000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-0-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-42-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-11-0x0000000003730000-0x0000000003D46000-memory.dmp

      Filesize

      6.1MB

    • memory/2236-1-0x0000000077050000-0x0000000077052000-memory.dmp

      Filesize

      8KB

    • memory/2432-36-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2432-57-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2432-68-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2756-50-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB

    • memory/2756-45-0x0000000000400000-0x0000000000A16000-memory.dmp

      Filesize

      6.1MB