Petya/PetyaWrap Threat Info

As we speak, there is a global ransomware outbreak spreading. The infosec community is working together, in the open, on Twitter and mailing lists sharing information with each other and the world about the threat. 

The infector is called “Petya”/“PetyaWrap” and it appears to use psexec to execute the EternalBlue exploits from the NSA.

The current infector has the following list of target file extensions in the current (as of an hour ago) release. https://twitter.com/bry_campbell/status/879702644394270720/photo/1

Those with robust networks will likely find containment a usual activity, while those who haven’t implement defense in depth and a holistic enclaving strategy are likely in trouble.

Here are the exploits it is using: CVE-2017-0199 and MS17-010, so make sure you have these patched on all systems. Make sure you find anything that is outside the usual patch cycle, like HVAC, elevators, network cameras, ATMs, IoT devices, printers and copiers, ICS components, etc. Note that this a combination of a client-side attack and a network attack, so likely very capable of spreading to internal systems… Client side likely to yield access to internals pretty easily.

May only be affecting the MBR, so check that to see if it is true for you. Some chatter about multiple variants. If you can open a command prompt, bootrec may help. Booting from a CD/USB or using a drive rescue tool may be of use. Restore/rebuild the MBR seems to be successful for some victims. >>  “bootrec /RebuildBcd bootrec /fixMbr bootrec /fixboot” (untested)

New Petrwrap/Petya ransomware has a fake Microsoft digital signature appended. Copied from Sysinternals Utils. – https://t.co/JooBu8lb9e

Lastline indicated this hash as an IOC: 027cc450ef5f8c5f653329641ec1fed91f694e0d229928963b30f6b0d7d3a745 – They also found these activities: https://pbs.twimg.com/media/DDVj-llVYAAHqk4.jpg

Eternal Blue detection rules are firing in several detection products, ET Rules firing on that Petya 71b6a493388e7d0b40c83ce903bc6b04  (drops 7e37ab34ecdcc3e77e24522ddfd4852d ) – https://twitter.com/kafeine/status/879711519038210048

Make sure Office updates are applied, in addition to OS updates for Windows. <<Office updates needed to be immune to CVE-2017-0199.

Now is a great time to ensure you have backups that work for critical systems and that your restore processes are functional.

Chatter about wide scale spread to POS systems across europe. Many industries impacted so far.

Bitdefender initial analysis – https://labs.bitdefender.com/2017/06/massive-goldeneye-ransomware-campaign-slams-worldwide-users/?utm_source=SMGlobal&utm_medium=Twitter&utm_campaign=labs

Stay safe out there! 

 

3:48pm Eastern

Update: Lots of great info on detection, response, spread and prevention can be found here: https://securelist.com/schroedingers-petya/78870/

Also, this is the last update to this post unless something significant changes. Follow me on Twitter for more info: @lbhuston 

Pay Attention to Egress Anomalies on Weekends

Just a quick note to pay careful attention to egress anomalies when the majority of your employees are not likely to be using the network. Most organizations, even those that are 24/7, experience reduced network egress to the Internet during nights and weekends. This is the perfect time to look for anomalies and to take advantage of the reduced traffic levels to perform deeper analysis such as a traffic level monitoring, average session/connection sizes, anomalies in levels of blocked egress ports, new and never before seen DNS resolutions, etc. 

If you can baseline traffic, even using something abstract like net flow, you may find some amazing stuff. Check it out! 

From Dark Net Research to Real World Safety Issue

On a recent engagement by the MSI Intelligence team, our client had us researching the dark net to discover threats against their global brands. This is a normal and methodology-driven process for the team and the TigerTrax™ platform has been optimized for this work for several years.

We’ve seen plenty of physical threats against clients before. In particular, our threat intelligence and brand monitoring services for professional sports teams have identified several significant threats of violence in the last few years. Unfortunately, this is much more common for high visibility brands and organizations than you might otherwise assume.

In this particular instance, conversations were flagged by TigerTrax from underground forums that were discussing physical attacks against the particular brand. The descriptions were detailed, politically motivated and threatened harm to employees and potentially the public. We immediately reported the issue and provided the captured data to the client. The client reviewed the conversations and correlated them with other physical security occurrences that had been reported by their employees. In today’s world, such threats require vigilant attention and a rapid response.

In this case, the client was able to turn our identified data into insights by using it to gain context from their internal security issue reporting system. From those insights, they were able to quickly launch an awareness campaign for their employees in the areas identified, report the issue to localized law enforcement and invest in additional fire and safety controls for their locations. We may never know if these efforts were truly effective, but if they prevented even a single occurrence of violence or saved a single human life, then that is a strong victory.

Security is often about working against things so that they don’t happen – making it abstract, sometimes frustrating and difficult to explain to some audiences. But, when you can act on binary data as intelligence and use it to prevent violence in the kinetic world, that is the highest of security goals! That is the reason we built TigerTrax and offer the types of intelligence services we do to mature organizations. We believe that insights like these can make a difference and we are proud to help our clients achieve them.

Attention to Privacy Issues Growing

From the board room to main street, digital privacy is becoming more and more of a hot topic.

Organizations have been asking us to discuss it with steering committees and boards. Our intelligence team has been performing privacy-related recon and other testing engagements for the last several years. More and more of our security engagements are starting to include elements of privacy concerns from organizations and individuals alike.

In the mainstream media, you have articles being pushed heavily like this – which discusses supposedly stolen NSA technology for monitoring, to discussions of personal privacy from the likes of Tim Cook, CEO of Apple.

As such, security teams should take the time to verse themselves in the privacy debate. It is likely that management and boards will be asking in the near future, if they aren’t already, for advice on the topic. This is a fantastic opportunity for security teams to engage in meaningful discussions with organizational leaders about a security-related topic on both a professional and personal scale. It might even be worth putting together a presentation, preemptively, and delivering it to the upper management and line managers around your company.

With so much attention to privacy these days, it’s a great chance to engage with people, teach basic infosec practices and have deep discussions about the changing digital world. That’s what your security team has been asking for, right? Now’s the time… 🙂 

Tips on Reducing Human Error Risks

One of the largest risks that organizations face is human error. The outcome of human errors show themselves in security, architecture, business operations, IT & non-IT projects, etc. The list goes on and on. You can read more about the impacts of human error on infosec here and here.

It’s important to understand some of the reasons why these errors occur, especially when critical projects or changes are being considered.

Some of the high level things to think about:

  • Physical fatigue – this is likely the leading cause of human errors, workers may not be getting enough sleep or downtime, especially during critical projects when stress and demands may be high, not to speak of their personal lives – organizations should allow for key resources to have adequate downtime to reduce errors during critical projects
  • Decision fatigue – the more decisions that someone has to make, the worse their decisions get over time – just like physical fatigue, preserving their decision making capability should be a consideration during critical projects for key resources
  • Lack of time on task – in many organizations, critical project key personnel are often called to meeting after meeting to discuss, plan or execute parts of the project – when this minimizes their time on task to perform the research, work or development for the project then quality suffers – at the very least, it may aggravate the other problems of fatigue; organizations should focus key resources on time on task to up the quality of their work during critical projects
  • Lack of peer review – peer review is an essential control for human error, since it can catch such usual conditions as typos, missing words, simple mistakes in logic, etc. Critical projects should always include several layers of peer review to ensure higher quality of the process or outcome
  • Lack of preparation for failure – many critical projects suffer from this form of error as many people assume that their plans will be successful, but failure occurs often, and the more complex the systems or plans, the more likely it is to occur – have a contingency plan to prevent emotional decisions which can deeply impact quality and successful outcomes

There are many other issues around human error in critical projects and even more in day to day operations. But, these seem to be the most prevalent and immediate issues we see around critical projects with clients in the last few years. 

How does your team manage human errors? What controls have you implemented? Share with us on Twitter (@microsolved, @lbhuston) and we may write about it in future posts. As always, thanks for reading! 

Got MS DNS Servers? Get the Patch ASAP!

If you run DNS on Microsoft Windows, pay careful attention to the MS-15-127 patch.

Microsoft rates this patch as critical for most Windows platforms running DNS services.

Remote exploits are possible, including remote code execution. Attackers exploiting this issue could obtain Local System context and privileges.

We are currently aware that reverse engineering of the patch has begun by researchers and exploit development is under way in the underground pertaining to this issue. A working exploit is likely to be made available soon, if it is not already in play, as you read this. 

Patch for MS15-034 RIGHT NOW!

If you have exposed IIS servers or internal ones as well, pay attention to MS15-034.

Accelerate this patch to immediate. Don’t wait for patching windows, SLAs or maintenance periods. Test the patch, sure, but get it applied ASAP.

This is a remotely executable vulnerability without authentication. It affects a wide range of Windows systems. It offers trivial denial of service exploitation and the bad guys are hard at work building click and drool tools for remote code execution. The clock is ticking, so please, accelerate this patch if possible.

For any additional information or assistance, please contact your account executive or drop us a line via info@microsolved.com.

Thanks and stay safe out there! 

Lots of PHP Web Shells Still Circulating

Many PHP-based web shells are still making the rounds, and while many of them are based on old code, mutations, customizations and updates abound. They are so common, that new variants and modified versions are often seen at the rate of about 10 a day in our TigerTrax Threat Intelligence systems and honeypots.

Variants exist for a wide variety of platforms and human languages, many with some very nasty features and even some cool ASCII art. There are many variants for attackers to choose from for just about any of the popular PHP-based content management platforms. From WordPress to Joomla and beyond to the far less common apps, there are easily used exploits and shell kits widely available.

If you run a PHP-based site or server, it’s a good idea to keep an eye on the file system changes and watch closely for new files being uploaded or added. Pay particular attention to those using the “base64_decode” function, since it is so common among these tools.

Thanks for reading, and until next time, stay safe out there! 

Malware Can Hide in a LOT of Places

This article about research showing how malware could be hidden in Blu-Ray disks should serve as a reminder to us all that a lot of those “smart” and “Internet-enabled” devices we are buying can also be a risk to our information. In the past, malware has used digital picture frames, vendor disks & CD’s, USB keys, smart “dongles” and a wide variety of other things that can plug into a computer or network as a transmission medium.

As the so called, Internet of Things (IoT), continues to grow in both substance and hype, more and more of these devices will be prevalent across homes and businesses everywhere. In a recent neighbor visit, I enumerated (with permission), more than 30 different computers, phones, tablets, smart TV’s and other miscellaneous devices on their home network. This family of 5 has smart radios, smart TVs and even a Wifi-connected set of toys that their kids play with. That’s a LOT of places for malware to hide…

I hope all of us can take a few minutes and just give that some thought. I am sure few of us really have a plan that includes such objects. Most families are lucky if they have a firewall and AV on all of their systems. Let alone a plan for “smart devices” and other network gook.

How will you handle this? What plans are you making? Ping us on Twitter (@lbhuston or @microsolved) and let us know your thoughts.

Pay Attention to this Samba Vulnerability

We have a feeling that this recent Samba vulnerability should be at the top of your mind. We are seeing a lot of attention to this across a variety of platforms and we wanted to make sure you saw it. It should be patched as soon as possible, especially on highly sensitive data stores and critical systems.

Let us know if you have any questions.