Analysis

  • max time kernel
    96s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-09-2024 23:02

General

  • Target

    63ad247fa5ab8cbedfae1f70f4d29b4a80f9b8dc6ae19f5a685b5c264fe661ceN.exe

  • Size

    3.3MB

  • MD5

    ceef92d4499e291b76822c9a08501970

  • SHA1

    ad234fb1df0a24e7bcda9dfbdbc1a3ae6bd1499d

  • SHA256

    63ad247fa5ab8cbedfae1f70f4d29b4a80f9b8dc6ae19f5a685b5c264fe661ce

  • SHA512

    5289f5451a996f891fda629150d52e000a351ed5eb122ffb791a811d4add18e3f71fd5e8d6dada95c572dca673f95ecbb404b2d9ba28014004a2f1e5aa0c0a69

  • SSDEEP

    49152:g7J7A7yD7q7yD7c747q7yD7A7yD7q7yD7H747q7yD7A7yD7q7yD727Q:gdMmD2mDAc2mDMmD2mDrc2mDMmD2mD6c

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
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Impair Defenses: Safe Mode Boot 1 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 20 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 4 IoCs
  • Modifies registry key 1 TTPs 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\63ad247fa5ab8cbedfae1f70f4d29b4a80f9b8dc6ae19f5a685b5c264fe661ceN.exe
    "C:\Users\Admin\AppData\Local\Temp\63ad247fa5ab8cbedfae1f70f4d29b4a80f9b8dc6ae19f5a685b5c264fe661ceN.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
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1124
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Impair Defenses: Safe Mode Boot
      • System Location Discovery: System Language Discovery
      • Modifies registry key
      PID:4936
    • 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
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3148
      • C:\Users\Admin\AppData\Local\Temp\avscan.exe
        C:\Users\Admin\AppData\Local\Temp\avscan.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4856
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
        3⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4828
        • C:\windows\hosts.exe
          C:\windows\hosts.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:3800
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
          4⤵
          • Adds policy Run key to start application
          • System Location Discovery: System Language Discovery
          PID:1952
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:3816
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:2184
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Modifies registry key
        PID:4440
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • 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
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2672
        • C:\Users\Admin\AppData\Local\Temp\avscan.exe
          C:\Users\Admin\AppData\Local\Temp\avscan.exe
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          PID:2940
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c c:\windows\W_X_C.bat
          4⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          • Suspicious use of WriteProcessMemory
          PID:2004
          • C:\windows\hosts.exe
            C:\windows\hosts.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of SetWindowsHookEx
            PID:976
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
            5⤵
            • Adds policy Run key to start application
            • System Location Discovery: System Language Discovery
            PID:1892
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:2824
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:4512
        • C:\Windows\SysWOW64\REG.exe
          REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:1848
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Windows\W_X_C.vbs"
        3⤵
        • Adds policy Run key to start application
        • System Location Discovery: System Language Discovery
        PID:2920
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3452

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

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

      Filesize

      3.3MB

      MD5

      d339c121a6c9e327d9ed350b7de7c1dc

      SHA1

      d09da4bb6305372921385a1425ea3a5def914300

      SHA256

      6f7e608be05bf1e7a48f8b053aacd6677d57ff62cac12b83ae6fdffff2d4f073

      SHA512

      052620c231e574f5389588512bcba96f1e6d7336cd3a4f2adef4261b2964bdbd819a6143d7feef840a14c5562761a926f5c2446757cc4dd5f1e72ed1c2bfd82a

    • C:\Windows\W_X_C.vbs

      Filesize

      195B

      MD5

      43821a7ed1f44fcb3080fa45c1b42476

      SHA1

      b73173c1fe649c72861945cd79382c0e3a004a52

      SHA256

      2cc918d5ebb977a9a9270efe50600f17ec5de5c0a57021649846b94aa435caaa

      SHA512

      cf601e67e5e4a110ae285ebc3fa73014b8379015eee018c17e434fc06c4b1b2be5d266ae9db42ff0268dd224f098ad453b58ba088da37ce0df7771a40adf1de5

    • C:\Windows\hosts.exe

      Filesize

      3.3MB

      MD5

      29214476423d4074dbe716901d2c3a27

      SHA1

      795fae8d6c24e022e326bfba4358f5f7286f7769

      SHA256

      6afee5af5253074c081e8a9846ee74dc32c790255f4e9d3c2c68111895403b1c

      SHA512

      4db7fcd43b988c48242bcb64a8ae072740420cd446bee4619c4b382655e19553936b04b21d31639b6f47dde1573265b168bbca979669009768b3a5973d5d8f3c

    • \??\c:\windows\W_X_C.bat

      Filesize

      336B

      MD5

      4db9f8b6175722b62ececeeeba1ce307

      SHA1

      3b3ba8414706e72a6fa19e884a97b87609e11e47

      SHA256

      d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78

      SHA512

      1d6dc274cf7a3dd704f840e6a5ad57ab4c4e35d5f09489aeff520bb797e1c825bac53fc335156fe41e767a46520d031855fe42fe7b175409ebe5e9e986fb9b8b