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I realize I might have been late to the party. As other comments have said, its not as easy as blaming Microsoft, though this is a popular take.


I agree -- Ascension is also complicit in this, and merely paying lip-service to HIPAA. The Senator's letter, on the other hand, paints a one-sided picture of the matter.


Good overview of Kerberoasting, still a common attack chain. A couple things though: To obtain access to a service, you actually need to get a service ticket (TGS) from the KDC (Domain Controller) to authenticate to the service, not a TGT. The TGT is the first ticket acquired during authentication to the domain. In addition, the "salt" is not a true salt but a concatenation of the domain and principal name, so even worse. Active Directory (invented at MIT) supports RC4, AES128, and AES256 encryption types, however you can effectively disable RC4 via Group Policy. The reason RC4 is still supported is to support legacy systems. Many organizations use old software that only supports RC4. For example, I've run into many manufacturing and small businesses that have no choice but to use it and can't upgrade the software due to $$$. Anyway, good stuff! Shout out to Tim Medin, who published this back in 2014.


> Active Directory (invented at MIT)

AD was invented by Microsoft, gluing together Kerberos (from MIT) and LDAP (from UMich). If it was from MIT, we wouldn't have had Windows 2000's infamous proprietary PAC.


History of Active Directory (derived from MS Exchange), see https://hardcoresoftware.learningbyshipping.com/p/bonus-the-...


> you actually need to get a service ticket (TGS)

If we're being pedantic, TGS ("ticket granting server") is the service you get service tickets from. Service tickets are (occasionally) abbreviated ST, as you'd expect. The TGS is a logical part of the KDC, distinguished from the AS which grants TGTs.


Kerbernerd revealed.


It’s been ages since I stood up a Kerberos realm, but… would it be possible to allow RC4 only for specific users? Like encrypt [email protected]’s heavily locked down account with RC4, but everyone else gets AES-256?


Yes you can enable specific encryption types for users. It's not super common, but it can be done.


Just to add to this, the salt (domain [realm] and username) is only used to generate the AES keys, not the RC4. The RC4 key is simply the NT hash.

And thanks for the shout out!


Threat intelligence is a thing.in fact there’s entire companies that sell just that. In fact, there’s entire government organizations that do just that.


Sure but that's not what their customer was engaging with them to do. It's not ethical to sell "EDR" services and then use that access to spy on your customers for intelligence purposes.


Huh? Small and medium sized businesses have how much to spend on security? Let alone IT?


In the US, on a corporate owned device there is no expectation of privacy.


Huntress is a cybersecurity company. They’re specifically hired for this purpose, to protect the company and its assets.

As far as unique identifiers go, advertisers use a unique fingerprint of your browser to target you individually. Cookies, JavaScript, screen size, etc, are all used.


The article states that the "attacker" downloaded the software via a Google ad, not deployed by their corporate IT.

I'm also slightly curious as to if you might be associated with an EDR vendor? I notice that you only have three comments ever, and they all seem to be defending how EDR software and Huntress works without engaging with this specific instance.


Again, threat actors are well aware of what they’re downloading. FWIW I’m an offsec specialist. I spend a lot of time bypassing EDR. Im just shocked at how little this crowd is aware of OpSec and threat intel. I’ll crawl back into my Reddit hole


I'm so sorry you're getting this kind of response. Your input is valuable and I'm learning a lot.


If you just want a different source, I can vouch for what cybergreg is saying.

Cybersecurity companies aren't passive data collectors like, say, Dropbox. They actively hunt for attacks in the data. To be clear, this goes way beyond MDR or EDR. The email security companies are hunting in your email, the network security companies are hunting in your network logs, so on. When they find things, they pick up the phone, and sometimes save you from wiring a million dollars to a bad guy or whatever.

The customer likes this very much, even if individual employees don't.


Yeah they're in full damage control after realizing how out of touch they are when not talking to corporate suits for once.


You’re really missing the point here. Huntress is an MDR, a cybersecurity company. They protect the endpoint by monitoring it for malicious activity and responding in kind. It’s what they do, not unlike Crowdstrike, Microsoft, etc. Generally a threat actor will install a security agent like this to find a bypass in order to attack more victims. They know exactly what they’re doing.


>They know exactly what they’re doing.

Strongly disagree. If they installed this to do some analysis they would have done that in a VM if they “knew exactly what they were doing”.

Either you snared a script kiddy, or your software download and install process that followed that google ads click was highly questionable.


I think it´s obvious from the browser history in the blog posting that script kiddy is for sure


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