As one ransomware-as-a-service operation shuts down, another is vying to take its place.  Sodinokibi ransomware attacks are increasing and affiliates are trying to carve out their own niche in the ransomware-as-a-service operation.

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Developing ransomware and staying one step ahead of security researchers is important, but what made the GandCrab operation so successful were the affiliates conducting the campaigns that generated the ransom payments. The GandCrab developers have now shut down their operation and that has left many affiliates looking for an alternative ransomware variant to push.

Sodinokibi ransomware could well fill the gap. Like GandCrab, the developers are offering their creation under the ransomware-as-a-service model. They already have a network of affiliates conducting campaigns, and attacks are on the increase.

As is the case with most ransomware-as-a-service operations, spam email is one of the most common methods of ransomware delivery. One Sodinokibi ransomware campaign has been detected that uses spoofed Booking.com notifications to lure recipients into opening a Word document and enabling macros. Doing so triggers the download and execution of the Sodinokibi payload.

Download websites are also being targeted. Access is gained the websites and legitimate software installers are replaced with ransomware installers. Managed Service Providers (MSPs) have also been targeted. The MSP attacks have exploited vulnerabilities in RDP to gain access to MSP management consoles.

Two cases have been reported where an MSP was compromised and malicious software was pushed to its clients through the client management console. In one case, the Webroot Management Console and the Kaseya VSA console in the other.

Recently, another attack method has been detected. Sodinokibi ransomware is being distributed through the RIG exploit kit. Malvertising campaigns are directing traffic to domains hosting RIG, which is loaded with exploits for several vulnerabilities.

With so many affiliates pushing Sodinokibi ransomware and the wide range of tactics being used, no single cybersecurity solution will provide full protection against attacks. The key to preventing attacks is defense in depth.

TitanHQ can help SMBs and MSPs secure the email and web channels and block the main attack vectors. Along with security awareness training and good cybersecurity best practices, it is possible to mount a formidable defense against ransomware, malware, and phishing attacks.