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Analysis

  • max time kernel
    127s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 16:27

General

  • Target

    75c8d3ddc165be49625de0675f8e67dbab3ccef72c4332e4e2ef61a960ff050a.exe

  • Size

    708KB

  • MD5

    53aa77528dcccbdcda93a9df77fab463

  • SHA1

    ec3d0863d693f32c3637e2490564cf7c434ef59a

  • SHA256

    75c8d3ddc165be49625de0675f8e67dbab3ccef72c4332e4e2ef61a960ff050a

  • SHA512

    f8483b9ec12742ca2b045cf60688e03c3d6be914433bdf488d17da46302feeb992eb760202ac2a81d010b5deff0294492c786ccfb42f1b479b5d38bb0dd39841

  • SSDEEP

    12288:g72bnI+w8GNA72bnI+w8GN472bnI+w8GNA72bnI+w8GNe:g72zd72zJ72zd72zr

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 3 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 3 IoCs
  • Adds policy Run key to start application 2 TTPs 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 6 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 4 IoCs
  • Modifies registry key 1 TTPs 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\75c8d3ddc165be49625de0675f8e67dbab3ccef72c4332e4e2ef61a960ff050a.exe
    "C:\Users\Admin\AppData\Local\Temp\75c8d3ddc165be49625de0675f8e67dbab3ccef72c4332e4e2ef61a960ff050a.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Modifies visiblity of hidden/system files in Explorer
    • Adds Run key to start application
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:400
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:1984
    • C:\Users\Admin\AppData\Local\Temp\avscan.exe
      C:\Users\Admin\AppData\Local\Temp\avscan.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        C:\Users\Admin\AppData\Local\Temp\avscan.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4668
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
        3⤵
        • Checks computer location settings
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:1380
        • C:\windows\hosts.exe
          C:\windows\hosts.exe
          4⤵
          • Modifies visibility of file extensions in Explorer
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Windows directory
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3976
          • C:\Users\Admin\AppData\Local\Temp\avscan.exe
            C:\Users\Admin\AppData\Local\Temp\avscan.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1588
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
            5⤵
            • Checks computer location settings
            • Modifies registry class
            • Suspicious use of WriteProcessMemory
            PID:2372
            • C:\windows\hosts.exe
              C:\windows\hosts.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:4576
            • C:\Windows\SysWOW64\WScript.exe
              "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
              6⤵
              • Adds policy Run key to start application
              PID:3944
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4280
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:2148
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4000
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:3680
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
          4⤵
          • Adds policy Run key to start application
          PID:4416
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4084
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:5064
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:456
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:1092
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
      2⤵
      • Checks computer location settings
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4600
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:3412
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
        3⤵
        • Adds policy Run key to start application
        PID:1820
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4440

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\avscan.exe

      Filesize

      708KB

      MD5

      737d3269dcab4dc070f2640a0e06fb95

      SHA1

      9ebf2000d2772c38cc462e651bf7b967044f5e6f

      SHA256

      74245a73767f5bf6a89377ebfb4d18038dd59bd1bbe2df1ec52ab9cac408c699

      SHA512

      08c47c5f10196ee99ed47923ef538a854bbf41a5932b9eff471fa0d9dfe7f1dd3fbaab886aebc090c60753dde0438c99727a4fbeb4e9eece1e20f9b3f3280c2f

    • C:\Users\Admin\AppData\Local\Temp\avscan.exe

      Filesize

      708KB

      MD5

      737d3269dcab4dc070f2640a0e06fb95

      SHA1

      9ebf2000d2772c38cc462e651bf7b967044f5e6f

      SHA256

      74245a73767f5bf6a89377ebfb4d18038dd59bd1bbe2df1ec52ab9cac408c699

      SHA512

      08c47c5f10196ee99ed47923ef538a854bbf41a5932b9eff471fa0d9dfe7f1dd3fbaab886aebc090c60753dde0438c99727a4fbeb4e9eece1e20f9b3f3280c2f

    • C:\Users\Admin\AppData\Local\Temp\avscan.exe

      Filesize

      708KB

      MD5

      737d3269dcab4dc070f2640a0e06fb95

      SHA1

      9ebf2000d2772c38cc462e651bf7b967044f5e6f

      SHA256

      74245a73767f5bf6a89377ebfb4d18038dd59bd1bbe2df1ec52ab9cac408c699

      SHA512

      08c47c5f10196ee99ed47923ef538a854bbf41a5932b9eff471fa0d9dfe7f1dd3fbaab886aebc090c60753dde0438c99727a4fbeb4e9eece1e20f9b3f3280c2f

    • C:\Users\Admin\AppData\Local\Temp\avscan.exe

      Filesize

      708KB

      MD5

      737d3269dcab4dc070f2640a0e06fb95

      SHA1

      9ebf2000d2772c38cc462e651bf7b967044f5e6f

      SHA256

      74245a73767f5bf6a89377ebfb4d18038dd59bd1bbe2df1ec52ab9cac408c699

      SHA512

      08c47c5f10196ee99ed47923ef538a854bbf41a5932b9eff471fa0d9dfe7f1dd3fbaab886aebc090c60753dde0438c99727a4fbeb4e9eece1e20f9b3f3280c2f

    • C:\Windows\W_X_C.vbs

      Filesize

      195B

      MD5

      0e0483d4802632100b6bfe8bc2e5d661

      SHA1

      767e0deb7dcaa7676004e6053957c36cecfeeefa

      SHA256

      81bbebb8d0e77ffffbc7b7d24afdcdce4089f4b04d1a12284eda861c25e03f9f

      SHA512

      8279b0559ca30a0adc6c8614870c3e445866c20f0617a7153cab41982b451dfe9ea44478f37b884465235714623ef26a56f5ea3d1cb81767487c494d3703ab29

    • C:\Windows\hosts.exe

      Filesize

      708KB

      MD5

      9f84d222e2561e6e8a5e20bd3edcc85a

      SHA1

      5fc7f86fa31671017b60f7f2eb217df94597ed64

      SHA256

      be6a05e4b754a6dfc8972182a6689eae210ce113b75c236b0fe019afbea7efbf

      SHA512

      888dcc440b473faa835a3e841a618cc881ead6e23bf5e5257bb48aad67a2f109b2510a18b2ae42ec12015326c5aeed8965f9866d7bc6ced87b6d58f90e83c92a

    • C:\Windows\hosts.exe

      Filesize

      708KB

      MD5

      9f84d222e2561e6e8a5e20bd3edcc85a

      SHA1

      5fc7f86fa31671017b60f7f2eb217df94597ed64

      SHA256

      be6a05e4b754a6dfc8972182a6689eae210ce113b75c236b0fe019afbea7efbf

      SHA512

      888dcc440b473faa835a3e841a618cc881ead6e23bf5e5257bb48aad67a2f109b2510a18b2ae42ec12015326c5aeed8965f9866d7bc6ced87b6d58f90e83c92a

    • C:\Windows\hosts.exe

      Filesize

      708KB

      MD5

      9f84d222e2561e6e8a5e20bd3edcc85a

      SHA1

      5fc7f86fa31671017b60f7f2eb217df94597ed64

      SHA256

      be6a05e4b754a6dfc8972182a6689eae210ce113b75c236b0fe019afbea7efbf

      SHA512

      888dcc440b473faa835a3e841a618cc881ead6e23bf5e5257bb48aad67a2f109b2510a18b2ae42ec12015326c5aeed8965f9866d7bc6ced87b6d58f90e83c92a

    • C:\Windows\hosts.exe

      Filesize

      708KB

      MD5

      9f84d222e2561e6e8a5e20bd3edcc85a

      SHA1

      5fc7f86fa31671017b60f7f2eb217df94597ed64

      SHA256

      be6a05e4b754a6dfc8972182a6689eae210ce113b75c236b0fe019afbea7efbf

      SHA512

      888dcc440b473faa835a3e841a618cc881ead6e23bf5e5257bb48aad67a2f109b2510a18b2ae42ec12015326c5aeed8965f9866d7bc6ced87b6d58f90e83c92a

    • C:\windows\hosts.exe

      Filesize

      708KB

      MD5

      9f84d222e2561e6e8a5e20bd3edcc85a

      SHA1

      5fc7f86fa31671017b60f7f2eb217df94597ed64

      SHA256

      be6a05e4b754a6dfc8972182a6689eae210ce113b75c236b0fe019afbea7efbf

      SHA512

      888dcc440b473faa835a3e841a618cc881ead6e23bf5e5257bb48aad67a2f109b2510a18b2ae42ec12015326c5aeed8965f9866d7bc6ced87b6d58f90e83c92a

    • \??\c:\windows\W_X_C.bat

      Filesize

      336B

      MD5

      4db9f8b6175722b62ececeeeba1ce307

      SHA1

      3b3ba8414706e72a6fa19e884a97b87609e11e47

      SHA256

      d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

      SHA512

      1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b