Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/11/2022, 15:17

General

  • Target

    cf1781aea79426ccb9a8c62cded32bfe90be988059ee0822ff92389ff84e4c19.exe

  • Size

    198KB

  • MD5

    18e545f212778610e8677aef46d6ad16

  • SHA1

    6eb4d05f25e7f14974765c1a1ee8deacca064d94

  • SHA256

    cf1781aea79426ccb9a8c62cded32bfe90be988059ee0822ff92389ff84e4c19

  • SHA512

    59d99d1f22ff2379a43a2784f265f0741b4bd88bc1343a0fddda3a13a2825a22b163a22e4a88bc6a93349458e4aec3c96166debec2523ad2177873ecf8ec25aa

  • SSDEEP

    3072:obpDCw1p3vmLvsZIaVwiwDcIbDHDCm/DER4eQF+9gqi:gDCwfG1bnxLERRy/

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\cf1781aea79426ccb9a8c62cded32bfe90be988059ee0822ff92389ff84e4c19.exe
    "C:\Users\Admin\AppData\Local\Temp\cf1781aea79426ccb9a8c62cded32bfe90be988059ee0822ff92389ff84e4c19.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:636
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:2120
    • 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:5056
      • 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:5000
      • 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:2088
        • 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:2256
          • 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:1320
          • 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:3436
            • C:\windows\hosts.exe
              C:\windows\hosts.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:4048
            • 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:1520
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:5076
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:588
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4468
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4088
        • 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:4584
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3340
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4960
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:2244
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3504
    • 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:2676
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:2484
      • 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:488
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4344

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      198KB

      MD5

      ff40ee15f9b1d5975b3abb1610c7841a

      SHA1

      d11f7196ff43cb9c63688068502e94515c270c0b

      SHA256

      1d9627859c885f5827383ffb0a9ab0c15418565b36483e7db946960779737d9d

      SHA512

      76e40225bfe8c474778fd54cf2a59fbb63eaceb84957bf4e35e9a6d191d47ab19a1f85cf1c25cf7a17646f31af69b2533a38a5ab0b8b17d0ca56126e5a42b633

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

      Filesize

      198KB

      MD5

      ff40ee15f9b1d5975b3abb1610c7841a

      SHA1

      d11f7196ff43cb9c63688068502e94515c270c0b

      SHA256

      1d9627859c885f5827383ffb0a9ab0c15418565b36483e7db946960779737d9d

      SHA512

      76e40225bfe8c474778fd54cf2a59fbb63eaceb84957bf4e35e9a6d191d47ab19a1f85cf1c25cf7a17646f31af69b2533a38a5ab0b8b17d0ca56126e5a42b633

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

      Filesize

      198KB

      MD5

      ff40ee15f9b1d5975b3abb1610c7841a

      SHA1

      d11f7196ff43cb9c63688068502e94515c270c0b

      SHA256

      1d9627859c885f5827383ffb0a9ab0c15418565b36483e7db946960779737d9d

      SHA512

      76e40225bfe8c474778fd54cf2a59fbb63eaceb84957bf4e35e9a6d191d47ab19a1f85cf1c25cf7a17646f31af69b2533a38a5ab0b8b17d0ca56126e5a42b633

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

      Filesize

      198KB

      MD5

      ff40ee15f9b1d5975b3abb1610c7841a

      SHA1

      d11f7196ff43cb9c63688068502e94515c270c0b

      SHA256

      1d9627859c885f5827383ffb0a9ab0c15418565b36483e7db946960779737d9d

      SHA512

      76e40225bfe8c474778fd54cf2a59fbb63eaceb84957bf4e35e9a6d191d47ab19a1f85cf1c25cf7a17646f31af69b2533a38a5ab0b8b17d0ca56126e5a42b633

    • C:\Windows\W_X_C.vbs

      Filesize

      195B

      MD5

      c35f93e634b81f2cb003c72a1fb9d1f2

      SHA1

      9b6c533eebab7958e9e167ab93a412d5411c7a89

      SHA256

      6afae199db9be5b7c4c5dac778ec8c45051666d11f93dd93c1700beb20e1136f

      SHA512

      5cc512763da54bc66ffff42e02dc28ad9cda03e46a8b9181425c619815fb7c7afe3a71fc73742e151e26de7a21ade101e59d6853fe70b7d99ea93195325c010d

    • C:\Windows\hosts.exe

      Filesize

      198KB

      MD5

      9f5c67461d74033b440c3632193509aa

      SHA1

      2d41c8f2e83b9b4021b30010878823d3408c09ff

      SHA256

      72304f002a7931007b40baa9cc3a9da2b6d14f4e3bc1cb248fa0a44cc1477ea1

      SHA512

      d508e71dd5fed4e476bad8c8369036aefecd3161cf70ab7941f364bb4fd442e4374c26b642ab5685debca15a2161f2929e92511796564bf1f5c69aafc9149718

    • C:\Windows\hosts.exe

      Filesize

      198KB

      MD5

      9f5c67461d74033b440c3632193509aa

      SHA1

      2d41c8f2e83b9b4021b30010878823d3408c09ff

      SHA256

      72304f002a7931007b40baa9cc3a9da2b6d14f4e3bc1cb248fa0a44cc1477ea1

      SHA512

      d508e71dd5fed4e476bad8c8369036aefecd3161cf70ab7941f364bb4fd442e4374c26b642ab5685debca15a2161f2929e92511796564bf1f5c69aafc9149718

    • C:\Windows\hosts.exe

      Filesize

      198KB

      MD5

      9f5c67461d74033b440c3632193509aa

      SHA1

      2d41c8f2e83b9b4021b30010878823d3408c09ff

      SHA256

      72304f002a7931007b40baa9cc3a9da2b6d14f4e3bc1cb248fa0a44cc1477ea1

      SHA512

      d508e71dd5fed4e476bad8c8369036aefecd3161cf70ab7941f364bb4fd442e4374c26b642ab5685debca15a2161f2929e92511796564bf1f5c69aafc9149718

    • C:\Windows\hosts.exe

      Filesize

      198KB

      MD5

      9f5c67461d74033b440c3632193509aa

      SHA1

      2d41c8f2e83b9b4021b30010878823d3408c09ff

      SHA256

      72304f002a7931007b40baa9cc3a9da2b6d14f4e3bc1cb248fa0a44cc1477ea1

      SHA512

      d508e71dd5fed4e476bad8c8369036aefecd3161cf70ab7941f364bb4fd442e4374c26b642ab5685debca15a2161f2929e92511796564bf1f5c69aafc9149718

    • C:\windows\hosts.exe

      Filesize

      198KB

      MD5

      9f5c67461d74033b440c3632193509aa

      SHA1

      2d41c8f2e83b9b4021b30010878823d3408c09ff

      SHA256

      72304f002a7931007b40baa9cc3a9da2b6d14f4e3bc1cb248fa0a44cc1477ea1

      SHA512

      d508e71dd5fed4e476bad8c8369036aefecd3161cf70ab7941f364bb4fd442e4374c26b642ab5685debca15a2161f2929e92511796564bf1f5c69aafc9149718

    • \??\c:\windows\W_X_C.bat

      Filesize

      336B

      MD5

      4db9f8b6175722b62ececeeeba1ce307

      SHA1

      3b3ba8414706e72a6fa19e884a97b87609e11e47

      SHA256

      d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

      SHA512

      1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b