About Us | Contact Us
View Cart

SolarWinds Update and Exchange Server Hack

By Tanvee Dhir | Monday, April 19, 2021 - Leave a Comment

As the investigation of the SolarWinds Hack was ongoing, another hack stole some of the limelight…


This is the final update on the SolarWinds hack unless a major development comes to light.
You can see the previous article here: “Autopsy of the SolarWinds Hack Update“.


One of the largest cyber-espionage campaigns in the history of US continues to unfold with more findings ever since its initial discovery in December 2020.To date there have been multiple federal agencies victimized in the hack including the US departments of Commerce and Treasury, State, National Institutes of Health, and the latest addition of Department of Homeland Security. According to a few reports, the Threat Actors (TAs) accessed the emails for the appointed Acting Secretary of the US Department of Homeland Security under the Trump administration along with accounts of other DHS officials.

The Senate Intelligence Committee held a hearing on February 23rd where the cybersecurity executives from SolarWinds, FireEye, Microsoft, CrowdStrike gave their testimonies about the SolarWinds hack. A joint hearing was then held again on February 26th by the Oversight and Reform and Homeland Security Committees to further understand each companies’ role in the breach. These hearings aim at helping the federal government understand the breach better to devise an appropriate response plan and possible legislative initiatives for such a large-scale nation-state attack. During the first hearing, Microsoft was partially blamed for their systemic weaknesses in the Windows authentication architecture which allowed the TAs to launch the Golden SAML attack to bypass multi factor authentication and perform privilege escalation without raising red flags once inside the network. To these accusations, Microsoft claimed that even though the Golden SAML security hole has been in existence since 2017, it “was not prioritized by the intelligence community as a risk, nor was it flagged by civilian agencies.” This statement however contradicted the cybersecurity advisory issued by the NSA stating that “the SAML forgery technique has been known and used by cyber actors since at least 2017.”

The in depth investigation being performed by the cybersecurity frontrunners is revealing new facts about the breach almost every week. The latest blogs released by FireEye and Microsoft reveal new strains of malware linked to the SolarWinds hack which were discovered upon the investigation of some of the compromised customer networks. These tailor-made malware strains are unique to the specific networks and were released by the TAs after they had initially intruded the network using the malicious Orion update and performed detailed reconnaissance of the compromised network. The newly discovered malware strains have been named GoldMax/SUNSHUTTLE, the name given by Microsoft and FireEye respectively, (persisting on the network as a scheduled task impersonating systems management software), Sibot (dual-purpose malware designed to achieve persistence on the infected machine and then download and execute a payload from a remote C2 server), and GoldFinder (tool designed to be used as a custom HTTP tracer tool that logs the route that a packet takes to reach a hardcoded C2 server) by Microsoft. Even though these latest malware strains were published by Microsoft and FireEye on Mar. 4, there were discoveries of a file uploaded to VirusTotal’s malware repository with the same name and file hashes which was supposedly uploaded by an IT personnel at the National Telecommunications and Information Administration (NTIA) back in August 2020.

As we have been following this sophisticated malware campaign, supposedly hosted by Russian Intelligence, the spotlight has been on SolarWinds for their lax security measures which led to the initial entry into the networks. However, the uncovering of further findings has somewhat shifted the spotlight and blame to Microsoft for their security holes which helped the TAs move laterally into the networks.

While Microsoft was busy tackling the pushback due to the SolarWinds hack, there was another massive hack that hit Microsoft’s Exchange Server that was discovered in early March. This hack is unrelated to the SolarWinds supply chain attack and was supposedly carried out by Hafnium, a well-established Chinese hacking group. The hacking group was able to exploit four severe vulnerabilities (now patched) in the Exchange server which gave the hackers capabilities to perform Remote Code Execution (RCE), data theft, server hijacks, install backdoors and malware. There is evidence that point to these vulnerabilities being exploited as early as January giving the hackers enough time to create havoc in some of the most critical networks in the country. The exploited vulnerabilities gave the hackers access to the email accounts and servers of up to 60,000 US governmental and commercial organizations and counting. Microsoft has released information to help customers figure out if their networks had been hit and is actively releasing security patches to secure any servers (even the ones dating back 10 years) that may still be on target.

While the scope of damage of this massive new hack is still unclear, it is believed that the Exchange server hack has the tendency to be far more damaging on a larger scale when compared to the SolarWinds hack. Unlike the SolarWinds breach which was primarily exploited by a single-sponsored group (supposedly Russia), the Microsoft Exchange vulnerabilities are open to the public internet and can also be targeted by various other notorious groups for their own profit.

Some Cybersecurity experts say that the close proximity of the two far-reaching hacking campaigns targeting major federal and commercial US organizations has made a dent on the global economy. The timing of the Microsoft hack seems to have been a calculated assault from China to take advantage of the national distraction created by the SolarWinds hack. There are still numerous facts being discovered about this Exchange server hack which we will present in the future.


Original article by Tanvee Dhir CEH. Data Security Analyst, infotex

 


same_strip_012513


 

Posted in Infotex News

Latest News
    Our Lead Non-Technical Auditor takes a look at the new AIO Guidance… Architecture, Infrastructure, and Operations (AIO) is the latest booklet released by the Federal Financial Institutions Examination Council (FFIEC) in their line of  IT Examination Handbooks. It is an update to their 2004 Operations booklet and, as the name implies, expands into the areas […]
    Another awareness poster for YOUR customers (and users).  Now that we have our own employees aware, maybe it’s time to start posting content for our customers! Download the large versions here: Awareness Poster (Portrait) Awareness Poster (Landscape)   You are welcome to print out and distribute this around your office. Interested in one of ours […]
    Many organizations still fail to consider the unique risks posed by cloud computing… An article review. Last month thousands of Western Digital MyCloud device owners learned about the risks of cloud-based solutions the hard way: their data had been wiped remotely due to a flaw in the internet-facing component of their external hard drives. While […]
    infotex does not use Kaseya… We are protecting our Clients! Another blog post meant to inspire thought about IT Governance . . . . To all infotex managed security service Clients: As you may be aware there was a large ransomware attack recently that leveraged a remote management tool called Kaseya that is used by many […]
    While we’re not a news service, we often use current events to comment on trends and our services. This blog is intended to get people thinking about topics and trends in Technology Risk Management, through our article reviews, as well as through original blog articles about current events and our MSSP services (such as our […]
    PRESS RELEASE – FOR IMMEDIATE RELEASE BUSINESS NEWS Dan Hadaway and Sara Fultz co-wrote an article in the Spring 2021 issue of the Ohio Record, the Official Magazine of the Ohio Bankers League.  Find out on page 20 and 21 of the magazine how tabletop testing strengthens bank cybersecurity. You can read the article here! […]
    You’ve heard it from every MSSP you’ve met: the definition of a SIEM is in the eye of the beholder. But at infotex, we are not talking about the database – an asset whose definition is continuously evolving. We’re talking about the way three teams collaborate in an overall Technology Risk Monitoring process. And whether […]
    After the large number of high-profile breaches in the recent months, it is easy to become disconcerted about how to prevent such things from happening to your Bank. The answer to preventing a breach is a very complex one. infotex will explore this with you! The heightened level of awareness and extra protective tendencies that […]
    A follow-up on Dan’s 2008 Password Manifesto On the NIST Publication on Digital Identity Guidelines Another one of those Dan’s New Leaf Posts, meant to inspire thought about IT Governance . . . . In June 2017, NIST released a special publication on digital identity, NIST SP 800-63, that is starting to get the attention […]
    Another awareness poster for YOUR customers (and users).  Now that we have our own employees aware, maybe it’s time to start posting content for our customers! Download the large versions here: Awareness Poster (Portrait) Awareness Poster (Landscape)   You are welcome to print out and distribute this around your office. Interested in one of ours […]