this post was submitted on 21 Jul 2024
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Microsoft says it estimates that 8.5m computers around the world were disabled by the global IT outage.

It’s the first time a figure has been put on the incident and suggests it could be the worst cyber event in history.

The glitch came from a security company called CrowdStrike which sent out a corrupted software update to its huge number of customers.

Microsoft, which is helping customers recover said in a blog post: "We currently estimate that CrowdStrike’s update affected 8.5 million Windows devices."

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[–] qjkxbmwvz@startrek.website 14 points 3 months ago (2 children)

Is there any automation available for this? Do you fix them sequentially or can you parallelize the process? How long did it take to fix 450?

Real clustermess, but curious what fixing it looks like for the boots on the ground.

[–] thisbenzingring@lemmy.sdf.org 18 points 3 months ago* (last edited 3 months ago)

Thankfully I had cached credentials and our servers aren't bitlocker'd. Majority of the servers had iLO consoles but not all. Most of the servers are on virtual hosts so once I got the fail over cluster back, it wasn't that hard just working my way through them. But the hardware servers without iLO required physically plugging in a monitor and keyboard to fix, which is time consuming. 10 of them took a couple hours.

I worked 11+ hours straight. No breaks or lunch. That got our production domain up and the backup system back on. The dev and test domains are probably half working. My boss was responsible for those and he's not very efficient.

So for the most part I was able to do most of the work from my admin pc in my office.

For the majority of them, I'd use the Widows recovery menu that they were stuck at to make them boot into safe mode with network support ( in case my cached credentials weren't up-to-date). Then start a cmd and type out that famous command

Del c:\windows\system32\drivers\crowdstrike\c-00000291*.sys

I'd auto complete the folders with tab and the 5 zero's ... Probably gonna have that file in my memory forever

Edit: one painful self inflicted problem was my password is 25 random LastPass generatied password. But IDK how I managed it, I never typed it wrong. Yay for small wins

[–] magikmw@lemm.ee 14 points 3 months ago (3 children)

You need to boot into emergency mode and replace a file. Afaik it's not very automatable.

[–] Jtee@lemmy.world 12 points 3 months ago (1 children)

Especially if you have bitlocker enabled. Can't boot to safe mode without entering the key, which typically only IT has access to.

[–] magikmw@lemm.ee 7 points 3 months ago

You can give up the key to user and force a replacement on next DC connection, but get people to enter a key that's 32 characters long over the phone... Not automatable anyway.

[–] HeyJoe@lemmy.world 6 points 3 months ago

Servers would probably be way easier than workstations if you ask me. If they were virtual, just bring up the remote console and you can do it all remotely. Even if they were physical I would hope they have an IP KVM attached to each server so they can also remotely access them as well. 450 sucks but at least they theoretically could have done every one of them without going anywhere.

There are also options to do workstations as well, but almost nobody ever uses those services so those probably need to be touched one by one.

[–] prashanthvsdvn@lemmy.world 2 points 3 months ago

I read this in a passing YouTube comment, but I think theoretically be possible to setup an ipxe boot server that sets up an Windows PE environment and can deploy the fix there and then all you have to do in the affected machines is to configure the boot option to the ipxe server you setup. Not fully sure though if it’s feasible or not.