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Analysis

  • max time kernel
    145s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 16:25

General

  • Target

    b840fd6db035e870ba51d42ab948f168700b343444acf99d815609a12b812881.exe

  • Size

    797KB

  • MD5

    dcd83bc2a230d56c8503fe376c79b507

  • SHA1

    481a19082db5f6f1b97467aa95815e50987ae4fe

  • SHA256

    b840fd6db035e870ba51d42ab948f168700b343444acf99d815609a12b812881

  • SHA512

    a4adc1636c9a5f3cab90e5db784e87490df286b97cee284099556b03d555dd636dcff0fc8b761314b62edb5e02e134b6e1313e85d256fd0dc96fd9ac04ee1a01

  • SSDEEP

    12288:g72bnI+kL72bnI+kDO472bnI+kL72bnI+kDOMYh:g72z072z3472z072z3MYh

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 3 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b840fd6db035e870ba51d42ab948f168700b343444acf99d815609a12b812881.exe
    "C:\Users\Admin\AppData\Local\Temp\b840fd6db035e870ba51d42ab948f168700b343444acf99d815609a12b812881.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 behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1748
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:3032
    • 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:4844
      • 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:4824
      • 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:532
        • 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:2880
          • 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:4456
          • 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:2088
            • C:\windows\hosts.exe
              C:\windows\hosts.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:1044
            • 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:2332
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:2284
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:2416
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4164
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:2588
        • 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:3708
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3292
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:2132
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:5084
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:508
    • 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:972
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4008
      • 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:1352
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2200

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      797KB

      MD5

      65f732b5101adeb975373a615404dba5

      SHA1

      7dbaa8355f92dc8137069ebcf6952f38129d663f

      SHA256

      471a0c6c9933b908d47e8989ee8b0a70589638cf633243a748f5ae4994914aac

      SHA512

      aed7d5c400f07a71d285237f9f9d76106617701342ee6acfdb69de71e8ce4267198a0c3eca2b2df2c966c865c28ffade9157dfe97c9feecccd6776f9028e6f8a

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

      Filesize

      797KB

      MD5

      65f732b5101adeb975373a615404dba5

      SHA1

      7dbaa8355f92dc8137069ebcf6952f38129d663f

      SHA256

      471a0c6c9933b908d47e8989ee8b0a70589638cf633243a748f5ae4994914aac

      SHA512

      aed7d5c400f07a71d285237f9f9d76106617701342ee6acfdb69de71e8ce4267198a0c3eca2b2df2c966c865c28ffade9157dfe97c9feecccd6776f9028e6f8a

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

      Filesize

      797KB

      MD5

      65f732b5101adeb975373a615404dba5

      SHA1

      7dbaa8355f92dc8137069ebcf6952f38129d663f

      SHA256

      471a0c6c9933b908d47e8989ee8b0a70589638cf633243a748f5ae4994914aac

      SHA512

      aed7d5c400f07a71d285237f9f9d76106617701342ee6acfdb69de71e8ce4267198a0c3eca2b2df2c966c865c28ffade9157dfe97c9feecccd6776f9028e6f8a

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

      Filesize

      797KB

      MD5

      65f732b5101adeb975373a615404dba5

      SHA1

      7dbaa8355f92dc8137069ebcf6952f38129d663f

      SHA256

      471a0c6c9933b908d47e8989ee8b0a70589638cf633243a748f5ae4994914aac

      SHA512

      aed7d5c400f07a71d285237f9f9d76106617701342ee6acfdb69de71e8ce4267198a0c3eca2b2df2c966c865c28ffade9157dfe97c9feecccd6776f9028e6f8a

    • C:\Windows\W_X_C.vbs

      Filesize

      195B

      MD5

      5b87381bf407d7c6018a8b11c3e20f92

      SHA1

      bb61b28d9c8fd7dfeb13a397c49a1be3abc06ca2

      SHA256

      4785d6a229d0872fe90c75ab620de9a680d7f07ccd27a134da2afc4ee88f34f3

      SHA512

      05db1178f671e9d6c3a1c601349093447b04ebddcd071a06f7cc92cbaf7efb53027bc92523a19372a08ca5af715cc9955649255f8be1909b5e594385b3dcbe3d

    • C:\Windows\hosts.exe

      Filesize

      797KB

      MD5

      18fc9c7bc550645d31272ce1b9db7b4e

      SHA1

      a18d6472166d9adee5d94c99c911650741c2a409

      SHA256

      4175a83807fc42a71199751bdbc5ec0eeb331185def481f76f8cdf61b8cc272b

      SHA512

      cd9095f0a51137b3e56f05886023ab4789164598318130c8b9c3b8b58040c47a0b7f675f6a0b253b3182dfb163094b75ec60011b01683ff35fedc32de429ef81

    • C:\Windows\hosts.exe

      Filesize

      797KB

      MD5

      18fc9c7bc550645d31272ce1b9db7b4e

      SHA1

      a18d6472166d9adee5d94c99c911650741c2a409

      SHA256

      4175a83807fc42a71199751bdbc5ec0eeb331185def481f76f8cdf61b8cc272b

      SHA512

      cd9095f0a51137b3e56f05886023ab4789164598318130c8b9c3b8b58040c47a0b7f675f6a0b253b3182dfb163094b75ec60011b01683ff35fedc32de429ef81

    • C:\Windows\hosts.exe

      Filesize

      797KB

      MD5

      18fc9c7bc550645d31272ce1b9db7b4e

      SHA1

      a18d6472166d9adee5d94c99c911650741c2a409

      SHA256

      4175a83807fc42a71199751bdbc5ec0eeb331185def481f76f8cdf61b8cc272b

      SHA512

      cd9095f0a51137b3e56f05886023ab4789164598318130c8b9c3b8b58040c47a0b7f675f6a0b253b3182dfb163094b75ec60011b01683ff35fedc32de429ef81

    • C:\Windows\hosts.exe

      Filesize

      797KB

      MD5

      18fc9c7bc550645d31272ce1b9db7b4e

      SHA1

      a18d6472166d9adee5d94c99c911650741c2a409

      SHA256

      4175a83807fc42a71199751bdbc5ec0eeb331185def481f76f8cdf61b8cc272b

      SHA512

      cd9095f0a51137b3e56f05886023ab4789164598318130c8b9c3b8b58040c47a0b7f675f6a0b253b3182dfb163094b75ec60011b01683ff35fedc32de429ef81

    • C:\windows\hosts.exe

      Filesize

      797KB

      MD5

      18fc9c7bc550645d31272ce1b9db7b4e

      SHA1

      a18d6472166d9adee5d94c99c911650741c2a409

      SHA256

      4175a83807fc42a71199751bdbc5ec0eeb331185def481f76f8cdf61b8cc272b

      SHA512

      cd9095f0a51137b3e56f05886023ab4789164598318130c8b9c3b8b58040c47a0b7f675f6a0b253b3182dfb163094b75ec60011b01683ff35fedc32de429ef81

    • \??\c:\windows\W_X_C.bat

      Filesize

      336B

      MD5

      4db9f8b6175722b62ececeeeba1ce307

      SHA1

      3b3ba8414706e72a6fa19e884a97b87609e11e47

      SHA256

      d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

      SHA512

      1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b