The provided code is a PowerShell command. Here’s a breakdown...

The provided code is a PowerShell command. Here’s a breakdown of what it does:

1. -ExecutionPolicy bypass -c:

   • This is used to run the script without being blocked by PowerShell's execution policy. bypass makes it ignore any restrictions.

2. $h=Get-Content -Path 'BEU.txt' -Raw:

   • Reads the entire content of the file named BEU.txt as a single string. The -Raw flag ensures the file contents are not split into lines but kept as a single block of text.

3. [byte[]]$bytes=($h -split '(.{2})' -ne '' -replace '^', '0X'):

   • The text content in $h is processed:
     • It is split into chunks of 2 characters using -split '(.{2})' (likely intended to parse hex bytes).
     • Chunks that are empty (-ne '') are removed.
     • A 0X prefix is added to each 2-character group using -replace '^', '0X' to allow conversion from hexadecimal to a byte array.
     • The result is converted to a byte array [byte[]].

4. [Reflection.Assembly]::Load($bytes):

   • Loads the byte array as a .NET assembly into memory. This assumes that the BEU.txt content decodes into a valid assembly (dll or executable in binary format).

5. $i=new-object u.U:

   • Creates a new object of the type u.U. This assumes that the loaded assembly contains a namespace u with a class U.

6. $i.ST():

   • Calls a method ST() on the newly created object $i. This assumes the method ST() exists in the u.U class.

Overall Summary:

This PowerShell code:

1. Reads a file (BEU.txt) which likely contains a hexadecimal representation of a .NET assembly (in string format).
2. Converts the string into a byte array.
3. Loads the byte array as a .NET assembly in memory.
4. Instantiates a class U in a namespace u from the loaded assembly.
5. Calls a method ST() from the instantiated object.

Potential Use:

This script is often used in malicious contexts to execute code from an obfuscated or encoded payload, bypassing security mechanisms. Be cautious when running such scripts as they may be part of malware or malicious intent.