Analysis

  • max time kernel
    151s
  • max time network
    189s
  • 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, 16:26

General

  • Target
    9c9620eca1c19b611830140e2a83168cc2af17145f7deb82ed24868e4357e768.exe
  • Size 846KB
  • Sample221129-txnwqsef56
  • SHA256 9c9620eca1c19b611830140e2a83168cc2af17145f7deb82ed24868e4357e768
  • MD5 SHA1 SHA512 SSDEEP
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\9c9620eca1c19b611830140e2a83168cc2af17145f7deb82ed24868e4357e768.exe
    "C:\Users\Admin\AppData\Local\Temp\9c9620eca1c19b611830140e2a83168cc2af17145f7deb82ed24868e4357e768.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:3532
    • C:\Windows\SysWOW64\REG.exe
      REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
      2⤵
      • Modifies registry key
      PID:4944
    • 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:4868
      • 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:4396
      • 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:4836
        • 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:1600
          • 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:1184
          • 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:2316
            • C:\windows\hosts.exe
              C:\windows\hosts.exe
              6⤵
              • Executes dropped EXE
              • Suspicious use of SetWindowsHookEx
              PID:3724
            • 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:4064
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:64
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:3808
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:4876
          • C:\Windows\SysWOW64\REG.exe
            REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
            5⤵
            • Modifies registry key
            PID:2432
        • 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:3788
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:3412
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:1884
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:2636
      • C:\Windows\SysWOW64\REG.exe
        REG DELETE HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot /f
        3⤵
        • Modifies registry key
        PID:4392
    • 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:4788
      • C:\windows\hosts.exe
        C:\windows\hosts.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4348
      • 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:4036
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:2336

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          avscan.exe

          • Path C:\Users\Admin\AppData\Local\Temp\avscan.exe
          • Size 846KB
          • SHA256 50b5f255afe71a5fb5350ceea049b4ce53f0cab3a480b9a765c2559a0efc799f
          • MD5 SHA1 SHA512 SSDEEP

          avscan.exe

          • Path C:\Users\Admin\AppData\Local\Temp\avscan.exe
          • Size 846KB
          • SHA256 50b5f255afe71a5fb5350ceea049b4ce53f0cab3a480b9a765c2559a0efc799f
          • MD5 SHA1 SHA512 SSDEEP

          avscan.exe

          • Path C:\Users\Admin\AppData\Local\Temp\avscan.exe
          • Size 846KB
          • SHA256 50b5f255afe71a5fb5350ceea049b4ce53f0cab3a480b9a765c2559a0efc799f
          • MD5 SHA1 SHA512 SSDEEP

          avscan.exe

          • Path C:\Users\Admin\AppData\Local\Temp\avscan.exe
          • Size 846KB
          • SHA256 50b5f255afe71a5fb5350ceea049b4ce53f0cab3a480b9a765c2559a0efc799f
          • MD5 SHA1 SHA512 SSDEEP

          W_X_C.vbs

          • Path C:\Windows\W_X_C.vbs
          • Size 195B
          • SHA256 4785d6a229d0872fe90c75ab620de9a680d7f07ccd27a134da2afc4ee88f34f3
          • MD5 SHA1 SHA512

          hosts.exe

          • Path C:\Windows\hosts.exe
          • Size 846KB
          • SHA256 6e1db5429596cb42d19a0a51706bacad4c1556df84726286f66e859386b048b5
          • MD5 SHA1 SHA512 SSDEEP

          hosts.exe

          • Path C:\Windows\hosts.exe
          • Size 846KB
          • SHA256 6e1db5429596cb42d19a0a51706bacad4c1556df84726286f66e859386b048b5
          • MD5 SHA1 SHA512 SSDEEP

          hosts.exe

          • Path C:\Windows\hosts.exe
          • Size 846KB
          • SHA256 6e1db5429596cb42d19a0a51706bacad4c1556df84726286f66e859386b048b5
          • MD5 SHA1 SHA512 SSDEEP

          hosts.exe

          • Path C:\Windows\hosts.exe
          • Size 846KB
          • SHA256 6e1db5429596cb42d19a0a51706bacad4c1556df84726286f66e859386b048b5
          • MD5 SHA1 SHA512 SSDEEP

          hosts.exe

          • Path C:\windows\hosts.exe
          • Size 846KB
          • SHA256 6e1db5429596cb42d19a0a51706bacad4c1556df84726286f66e859386b048b5
          • MD5 SHA1 SHA512 SSDEEP

          W_X_C.bat

          • Path \??\c:\windows\W_X_C.bat
          • Size 336B
          • SHA256 d2150b9e5a4ce55e140f0ca91c4e300715d42095c8fddf58c77037cdd2cfaf78
          • MD5 SHA1 SHA512