Huge Amount of remotewebaccess.com Sites Found in Certificate Transparency Logs
I'm keeping an eye on the certificate transparency logs[1] using automated scripts. The goal is to track domain names (and their variations) of my customers, sensitive services in Belgium, key Internet players and some interesting keywords. Yesterday I detected a peak of events related to the domain 'remotewebaccess.com'. This domain, owned by Microsoft, is used to provide temporary remote access to Windows computers[2]. Microsoft allows you to use your own domain but provides also (for more convenience?) a list of available domains. Once configured, you are able to access the computer from a browser:
In my logs, just for yesterday, I found 49610 entries based on the domain 'remotewebaccess.com'. In many cases, the first part of the FQDN reveals clearly the name of the company or the business (ex: 'clinic', 'health', etc). Amongst those sites, approximately 500 were alive and reachable from anywhere.
Be careful when you use this feature because your chosen FDQN can be disclosed in certificate transparency lists and they are not only watched by blue teams!
[1] http://www.certificate-transparency.org/known-logs
[2] https://techcommunity.microsoft.com/t5/Windows-Server-Essentials-and/Configuring-and-Customizing-Remote-Web-Access-on-Windows-Server/ba-p/398904
Xavier Mertens (@xme)
Senior ISC Handler - Freelance Cyber Security Consultant
PGP Key
Comments
Anonymous
Dec 3rd 2022
9 months ago
Anonymous
Dec 3rd 2022
9 months ago
<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.
<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission
Anonymous
Dec 26th 2022
8 months ago
Anonymous
Dec 26th 2022
8 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
8 months ago
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> nearest public toilet to me</a>
<a hreaf="https://defineprogramming.com/the-public-bathroom-near-me-find-nearest-public-toilet/"> public bathroom near me</a>
Anonymous
Dec 26th 2022
8 months ago
Anonymous
Dec 26th 2022
8 months ago
https://defineprogramming.com/
Dec 26th 2022
8 months ago
distribute malware. Even if the URL listed on the ad shows a legitimate website, subsequent ad traffic can easily lead to a fake page. Different types of malware are distributed in this manner. I've seen IcedID (Bokbot), Gozi/ISFB, and various information stealers distributed through fake software websites that were provided through Google ad traffic. I submitted malicious files from this example to VirusTotal and found a low rate of detection, with some files not showing as malware at all. Additionally, domains associated with this infection frequently change. That might make it hard to detect.
https://clickercounter.org/
https://defineprogramming.com/
Dec 26th 2022
8 months ago
rthrth
Jan 2nd 2023
8 months ago