Thursday, March 26, 2020

Threat Source newsletter (March 26, 2020)


Newsletter compiled by Jon Munshaw.

Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week.

Just because we’re all still working from home doesn’t mean you can stop patching. We’ve been busy this week with a new wave of vulnerabilities we disclosed, including in Intel Web Raid Console, Videolabs and GStreamer.

If you’re looking to fill some silence at home or just want to hear a friendly voice, we’re still uploading new podcasts every week, so subscribe to Beers with Talos and Talos Takes on your favorite podcatcher.

And, as always, we have the latest Threat Roundup where we go through the top threats we saw — and blocked — over the past week.

Upcoming public engagements

Event: “Everyone's Advanced Now: The evolution of actors on the threat landscape” at Interop Tokyo 2020
Location: Makuhari Messe, Tokyo, Japan
Date: June 10 - 12
Speakers: Nick Biasini
Synopsis: In the past, there were two clear classes of adversary an enterprise would face: sophisticated and basic. These basic threats were commodity infections that would require simple triage and remediation. Today, these commodity infections can quickly turn into enterprise-crippling ransomware attacks, costing organizations millions of dollars to recover. Now more than ever, organizations need every advantage they can get — and threat intelligence is a big part of it. Having visibility into your own environment and attacks around the globe are equally vital to success. This talk will cover these trends and show how the gap between the sophisticated and the basic adversary is quickly disappearing.

Cyber Security Week in Review

  • The World Health Organization has seen a spike in attempted cyber attacks as the global NGO continues to respond to the coronavirus pandemic. The WHO’s chief information security officer said the most notable intrusion was unsuccessful, but attacks continue. 
  • Security researchers discovered a password to assist users who become infected with the CovidLock Android ransomware. The unlock token will return users' information that the malware steals and requests a ransom for in return. 
  • Attackers are using a Department of Health and Human Service’s open redirect to entice victims with alleged information on COVID-19. The phony emails trick users into downloading the Raccoon information-stealing malware. 
  • Researchers discovered a malicious app that claims to allow users to track the spread of COVID-19, when it actually tracks their location and steals information off a mobile device. Coronalive 1.1 claims to be associated with the real Covidlive app, which is developed by Johns Hopkins Hospital.  
  • A massive spending bill passed by the Senate designed to help the American economy during the COVID-19 pandemic includes $400 million to fund backup plans for the upcoming general election. The funds are aimed at expanding online registration, securing polling places and preparing for more mail-in ballots. 
  • The Google Play store at one point contained 56 malicious apps all connected to the Tekya malware family. Security researchers estimate they were downloaded a combined 1.7 million times. 
  • Congress may start voting remotely as lawmakers head home to prevent the spread of COVID-19. However, this could open the door to a new wave of attacks, especially as Congress has not invested in the necessary technological infrastructure.  
  • Personal information belonging to 538 million Chinese citizens is available for sale on the dark web. An attacker claims to have stolen the information from a data breach of the Weibo social media site. 
  • White hat hackers are increasingly assisting celebrities and influencers whose Instagram accounts are hacked. The hackers have discovered several severs containing Instagram login credentials and specially designed phishing pages and scripts.  
  • Attackers are using the rise in video conferencing service Zoom to send malicious content as friends and school children look to meet virtually. Known as “Zoombombing,” the hackers are jumping into unsuspecting calls and using the screen share feature to project adult or other inappropriate content.  

Notable recent security issues

Title: Cisco patches high-severity vulnerabilities in some routers
Description: Cisco disclosed five vulnerabilities in its SD-WAN software, three of which are considered high severity. The security flaws leave several products open to exploitation, including some routers and network management systems. CVE-2020-3266 is the most severe of all with a CVSS score of 7.8. A local attacker could exploit the CLI utility in SD-WAN to inject arbitrary commands with root privileges. The company says there are no workarounds as of the release of these exploits, so users are encouraged to patch as soon as possible. 
Snort SIDs: 53481 - 53483

Title: Intel Raid Web Console 3 denial-of-service bugs
Description: The Intel RAID Web Console 3’s web API contains two denial-of-service vulnerabilities. The Raid Web Console is a web-based application that provides several configuration functions for the Intel RAID line of products, which includes controllers and storage expanders. The console monitors, maintains and troubleshoots these products. An attacker could exploit both these bugs by sending a malicious POST request to the API.
Snort SIDs: 51652, 51684

Most prevalent malware files this week

SHA 256: a545df34334b39522b9cc8cc0c11a1591e016539b209ca1d4ab8626d70a54776
MD5: 5d34464531ddbdc7b0a4dba5b4c1cfea
Typical Filename: FlashHelperServices.exe
Claimed Product: Flash Helper Service
Detection Name: PUA.Win.Adware.Flashserv::in03.talos

SHA 256: 8e0aea169927ae791dbafe063a567485d33154198cd539ee7efcd81a734ea325
MD5: 5fb477098fc975fd1b314c8fb0e4ec06
Typical Filename: upxarch.exe
Claimed Product: N/A 
Detection Name: Win.Dropper.Ranumbot::in07.talos

SHA 256: 85b936960fbe5100c170b777e1647ce9f0f01e3ab9742dfc23f37cb0825b30b5
MD5: 8c80dd97c37525927c1e549cb59bcbf3
Typical Filename: eternalblue-2.2.0.exe
Claimed Product: N/A
Detection Name: W32.85B936960F.5A5226262.auto.Talos

SHA 256: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f
MD5: e2ea315d9a83e7577053f52c974f6a5a
Typical Filename: c3e530cc005583b47322b6649ddc0dab1b64bcf22b124a492606763c52fb048f.bin
Claimed Product: N/A
Detection Name: W32.AgentWDCR:Gen.21gn.1201

SHA 256: 46f2f4815d25bf313c08880f3b0a23fb541ae74344371867f58b64d1d488a02b 
MD5: b70431ab7b13034e9d25edba5c5436d5
Typical Filename: FOC invoices_pdf.gz.xlsx
Claimed Product: N/A
Detection Name: W32.46F2F4815D-100.SBX.TG 

Keep up with all things Talos by following us on TwitterSnortClamAV and Immunet also have their own accounts you can follow to keep up with their latest updates. You can also subscribe to the Beers with Talos podcast here (as well as on your favorite podcast app). And, if you’re not already, you can also subscribe to the weekly Threat Source newsletter here.  

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