Showing posts with label Proxy. Show all posts
Showing posts with label Proxy. Show all posts

Friday, September 10, 2021

Threat Hunt - Proxy Phishing from HTML attachment

 proxy #threathunt idea:

where urlpath = '/next.php' and method = 'POST' and referrer is null cred #phishing 9/10/21 Sharepoint Theme sbj: notification 1 new FAX from: mout.kundenserver[.de 212.227.126.134 HTML attachment posts stolen creds to gms4372.nelrg[.com/gfkn/next.php

Threat Hunt - Proxy C2 IP with PHP

potential proxy #threathunt idea

post or put to urls that contain ip address and php

where
domain matches '^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$'
and
method in ('POST', 'PUT')
and
urlpath endswith '.php'

https://app.any.run/tasks/7f60bc17-b518-4a4a-8455-14b893b53104/

Tuesday, May 31, 2016

Open Proxy Requests

If you see any requests in your web logs, IDS, and WAF that have full urls in the HTTP GET request, you may wonder, what on earth is that?

GET http://testp4.pospr.waw.pl/testproxy.php


Typically you're probably used to see GET requests that look like this GET /default.php where the GET request takes a single page, not an entire url. But in the example highlighted above, you see an entire url. Why you may ask? This is just an attacker probing the internet looking for open proxies, or basically looking for a server that will make a web request on behalf of them. Thus an attacker could spam or perform a denial of service or many other malicious activities, but the requests would be proxied through or passed through another device so that the victim doesn't know who it's coming from. In this above example, the attacker will get a response back from your server. If the response is something like a 404 (page not found) or 503 (internal server error) then the attacker ignores and moves on, but if in the response the attacker actually got your server to return the contents of the embedded '.pl' top domain url then he's found an open proxy and can start funnelling is evil requests through it.

As long as you're hosting a normal legit website and don't have open proxy features or software enabled on your server then these requests are harmless to you.

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Wednesday, March 11, 2015

Running Malwarebytes updates behind a Proxy

I keep trying to update my Malwarebytes database but it fails with "Unable to Access update Server"!


To fix that, go to Update Settings and enter your proxy server and credentials

Then re-run the update



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