Anomali Cyber Watch: Zyxel Patches Critical Firewall Bypass Vulnerability, Spring4Shell (CVE-2022-22965), The Caddywiper Malware Attacking Ukraine and More

The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: Caddywiper, Colibri Loader, Gamaredon, SaintBear, SolarMaker and Spring4Shell. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.



Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.



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New SolarMaker (Jupyter) Campaign Demonstrates the Malware’s Changing Attack Patterns



(published: April 8, 2022)



Palo Alto Researchers have released their technical analysis of a new version of SolarMaker malware. Prevalent since September 2020, SolarMaker’s initial infection vector is SEO poisoning; creating malicious websites with popular keywords to increase their ranking in search engines. Once clicked on, an encrypted Powershell script is automatically downloaded. When executed, the malware is installed. SolarMaker’s main functionality is the theft of web browser information such as stored passwords, auto-fill data, and saved credit card information. All the data is sent back to an encoded C2 server encrypted with AES. New features discovered by this technical analysis include increased dropper file size, droppers are always signed with legitimate certificates, a switch back to executables instead of MSI files. Furthermore, the backdoor is now loaded into the dropper process instead of the Powershell process upon first time execution.Analyst Comment: Never click on suspicious links, always inspect the url for any anomalies. Untrusted executables should never be executed, nor privileges assigned to them. Monitor network traffic to assist in the discovery of non standard outbound connections which may indicate c2 activi ..

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