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Analysis

  • max time kernel
    120s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    29/08/2024, 00:00

General

  • Target

    e71c4b372949989e2a99bc7edb25a460N.exe

  • Size

    2.5MB

  • MD5

    e71c4b372949989e2a99bc7edb25a460

  • SHA1

    b763bc18cef63a7e1a125b9a961176629fcd62a8

  • SHA256

    eeea17ba1c4919676b43c9081b87e0e4c0d2e86e29e1ad7eedfc6533439669fd

  • SHA512

    fbf28d753f322c76da1fb1fd56f644df8eec886311692e252ec7cf20696ab498ce71f26ebf7be8b09f42c66d56886c1e7e14d78f6dd9f6e8bd6d121dd69fd1d3

  • SSDEEP

    49152:XxmvumkQ9lY9sgUXdTPSxdQ8KX75IyuWuCjcCqWOyxj:Xxx9NUFkQx753uWuCyyxj

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 20 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\e71c4b372949989e2a99bc7edb25a460N.exe
    "C:\Users\Admin\AppData\Local\Temp\e71c4b372949989e2a99bc7edb25a460N.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:2636
    • \??\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:2776
      • \??\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:2356
        • \??\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:2732
          • \??\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:2716
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:02 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2996
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 00:03 /f
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2028
      • C:\Windows\Explorer.exe
        C:\Windows\Explorer.exe
        3⤵
          PID:2620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      2.5MB

      MD5

      385dfad1f5f3f0ae0c30bd7172a5d349

      SHA1

      e100fd11e98e33e478cc3e76e079cf9df8ffc94e

      SHA256

      a14ac0b08006d6f6ebfac462538ba61ba66c60369b56fc0a5466a94484762fa3

      SHA512

      07ba290752f773cdf5cac20137f0cd62ff5fb7bea24dffd15027113722065328c4f1258dc9d3bee29ac270591d6b02077c7160c1d7f8f98883b9e7660afbf681

    • C:\Windows\Resources\spoolsv.exe

      Filesize

      2.5MB

      MD5

      70547004c62bbd51d696549c935127eb

      SHA1

      454e0f149d8ebe42f738523bd2c8f40c9421908b

      SHA256

      2f46e605554989f255f244defe6fec94424dfbcfe409dfff9cc32029b79a284f

      SHA512

      48c765f77307e01148ac5f54c6ce13cb712ac5f7c1eb6ac51f07a57ca09c26cee19a49fd7645ddb4c79bd5deed25dba94b008f9584d1866d19c93d063c389316

    • \Windows\Resources\svchost.exe

      Filesize

      2.5MB

      MD5

      c490ce07241d490723a72c8614895baf

      SHA1

      f9206f1745351f56016adedc2c599d03ff9ce537

      SHA256

      8414d4ed34bf35464d1bac8195c10be28b98a6a2293c36eec775483f7eb02f1f

      SHA512

      88b36961cc8d4bd8fbd417bcd6bd5dc5d39c1d429101a65dec98854a6ffcdf198f3305b0bee40acd8c93256dec93083b71391f544f3afba19829e33651686aa5

    • memory/2356-24-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2356-35-0x00000000036D0000-0x0000000003CDE000-memory.dmp

      Filesize

      6.1MB

    • memory/2356-52-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-11-0x0000000003850000-0x0000000003E5E000-memory.dmp

      Filesize

      6.1MB

    • memory/2636-44-0x0000000003850000-0x0000000003E5E000-memory.dmp

      Filesize

      6.1MB

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

      Filesize

      6.1MB

    • memory/2636-1-0x0000000076F20000-0x0000000076F22000-memory.dmp

      Filesize

      8KB

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

      Filesize

      6.1MB

    • memory/2636-42-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2716-45-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2716-50-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-56-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-36-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-68-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2732-78-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-21-0x00000000035C0000-0x0000000003BCE000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-55-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-12-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-57-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-65-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB

    • memory/2776-69-0x0000000000400000-0x0000000000A0E000-memory.dmp

      Filesize

      6.1MB