Is this traffic bAD?
It seems like every time I take a handler shift lately, I'm talking about an uptick of traffic on another port and I'm not breaking that trend today. This really takes me back to the early days of the Internet Storm Center when that seemed to be the main thing we talked about. This time, the port that gotmy attention is UDP port 389. This is the normal port for the Lightweight Directory Access Protocol (LDAP) which is used a great deal by Microsoft Active Directory (AD).
You'll notice we aren't seeing an increase is sources, but they do seem to have increased the amount of scanning they are doing (both number of targets and number of reports). A quick search shows there was a vulnerability reported in March, but I haven't been able to determine if this new traffic is actually trying to exploit it or not. I haven't been able to make much sense of the traffic I've captured in my personal honeypots, yet, but plan to look more carefully later today/tomorrow. For whatever it is worth, the top three scanners are from the US, India, and Belize. I probably don't need to tell this audience, but your Active Directory/LDAP is probably not something that should be directly exposed on the internet. If anyone knows what is going on, you can comment below, or e-mail us, or use our contact form.
References:
[1] https://nvd.nist.gov/vuln/detail/CVE-2020-35518
---------------
Jim Clausing, GIAC GSE #26
jclausing --at-- isc [dot] sans (dot) edu
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
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<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