xdr Archives - Planet IT

Today is World Backup Day, for many it’s a day to be celebrated, but for just as many, it’s a stark reminder of the dark omen that is an uncertain backup environment or plan.

We all know the basics of backup right? The things we all want to achieve

Retention
Redundancy
Recovery

I could happily go on for far longer than any of you would care to read on each of these topics!

Today however, I want to talk about the practical elements of making sure your backups and overall disaster recovery plan are the best they can be. Starting with some basic questions.

Are you backing up your whole environment?
Are you running your backups daily?
Are your backups retained for the right amount of time?
Do you take backups off-site?
Are your backup sets fully automated?
Are your backup jobs encrypted?
If you have cloud resources (Microsoft 365, Azure, AWS) are these backed up?

In an ideal world, you would want each of the above to be a confident and resounding YES! However, this is not always the case – we often hear the ill-fated “I don’t know”.

So, what can we do to be certain on the above and confidently rest knowing our backups will be there for us should the worst occur?

Step 1 – Check the List

Firstly, I would start by checking your infrastructure or approach your IT Team to get the answers to the above questions. Understand that if the answer to any of them is no, in this first step, it’s less important to know why, just to understand the position you are currently in. Once you’ve established that, let’s move on to step 2.

Step 2 – Check the Kit

Once you have a firm understanding of your overall backup integrity, it’s time to push past the smoke and mirrors and figure out exactly what you are working with. Check your storage, check your software and make sure it isn’t letting you down. There are so many options available in today’s market, but a quick search of your products and the competition should help you understand if you need to make any changes.

Step 3 – Make your Plan

At this point, you’re either happily relishing in confidence… or you’re not.

If you’re not… bear with me, I promise, we’ve just ripped off the worst of the band-aids and from here… the only way is up. When making your plan, it’s important to work out what you need first, what you want second and then figure out the cost implications (if any) your business will need to work towards. Everyone loves a good deal (or better, a free deal!) but sometimes investment is required to ensure you have the right infrastructure for your plan. When making your plan, make sure you are referencing the list from Step 1 and work out the following:

How long do I want to keep my backups?
What is my off-site storage plan?
Do I have Cloud Resources that need to be backed up?
How efficient do I want my backups to be?
How long can I afford to be offline in the event of a disaster?
How much data can I afford to lose in the event of a disaster?

The answers to these questions will help you to understand how much storage you need, whether you need a cloud or second-site storage plan, if you need high performance equipment and your Recovery Point/Time Objectives. Know that even if the plan is loose, it’s more than you had at Step 1 and it will help you enormously when collaborating with your teams, suppliers and peers to achieve the best outcome.

Step 4 – Reach Out

At this point, we’ve gone from scratching our heads, to having a clear understanding of the potential issues, a goal to aim for and a plan to get there. Now it’s time to reach out.

Speak to your team and your suppliers and get them on board with your plan. From this point forward, you’re taking control of your backup & disaster recovery plan. You’ve worked out what you want to achieve and you’re making it happen. That, or you were happy from Step 1 – either way, grab a coffee and your favourite lockdown biscuit, you’ve earned it!

Remember, if you ever have any questions, just ask. I, or one of the team here at Planet IT, are always happy to be used as a sounding board and can offer our expertise for your specific situation.

Feel free to reach out to me via LinkedIn or email me at [email protected].

There has been lots of noise in the press and on social media about the HAFNIUM threat actors and the current vulnerability that has been detected in all current versions of Exchange on premise.

If you haven’t read up on the attack and the risks you can do so here;

https://www.bleepingcomputer.com/news/microsoft/microsoft-march-2021-patch-tuesday-fixes-82-flaws-2-zero-days/

https://www.kaspersky.co.uk/blog/exchange-vulnerabilities/22385/

https://www.volexity.com/blog/2021/03/02/active-exploitation-of-microsoft-exchange-zero-day-vulnerabilities/

These articles have been leaving a lot of IT managers and CTO running around looking for solutions. They need a way to quickly patch up the servers and cover over a hole that has been there since at least last November, when as far as the first reported case of an attack using this vulnerability. However, what do you need to be doing next?

We all know that Microsoft issued patches on a non-standard update to Windows or a (out-of-band) update. For those out of the know, this means this Hafnium vulnerability is bad! Microsoft rarely break their patch cycle but when they do as with the SMB vulnerabilities with WannaCry. When they do it means you need to be act fast.

By the time these latest OoB updates where released, Microsoft made it clear that these attacks where already happening, which means for some of you who are readying this article thinking you are safe because you ran the patch, you may not be.

The four most dangerous vulnerabilities already being exploited allow attacks to pull off a three stage attack on compromised systems.

The attack chain is simple;

First, access a compromised Exchange server (one missing the patch) this can even be an Exchange Management point for Office 365, it doesn’t need to be a full running system.
Then they create a Web shell for remote server access
They then use this to harvest data from the network and systems associated with this Exchange server, essential using it like an open front door.

So how do you protect against the Hafnium threat?

This is where you need to be looking at having a product in place as your antivirus/antimalware which uses EDR or XDR technology and has up to date behaviour and exploit prevention and detection.

Watch out for the following detections

Exploit.Win32.CVE-2021-26857.gen
HEUR:Exploit.Win32.CVE-2021-26857.a
HEUR:Trojan.ASP.Webshell.gen
HEUR:Backdoor.ASP.WebShell.gen
UDS:DangerousObject.Multi.Generic

So what should you do next?

As Microsoft has already released an update to fix all these vulnerabilities, we strongly recommend updating Exchange Servers as soon as possible, Microsoft have even gone as far as releasing a quick install roll up which should work for most Exchange servers. For more complex deployments like DAG’s, then Planet IT can support you with this process.

You then need to focus on your defence strategy on detection lateral movements and data exfiltration to the internet. For this we recommend that you pay special attention to outgoing traffic to detect cybercriminal connections.

As always you should ensure that you are backing-up regularly and make sure you can quickly access it in an emergency, if you have questions on this then Michael Davey – [email protected] and his Back Up Services team will be more than happy to help.

Make sure you have an Endpoint Detection and Response product in place. If you don’t reach out to your Planet IT account manager who can provide you with details of what is available and works with your security landscape.

Finally make sure you are using a reliable endpoint security solution such as Kaspersky or Sophos that has included in it Exploit Prevention, Behaviour Detection, a Remediation engine. It would also be beneficial to ensure that your product has a Vulnerability and Patch Management capabilities.

If you would like to discuss with myself or any of the cyber security team at Planet IT about how you can better protect you business, should that be with new technology, strategies or even better back ups you can reach us using the contact details below;

Contact me at – LinkedIn Message James Dell or Email : [email protected]

Call 01235 433900 or Email : [email protected]

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