This is because Criminal IP detected that this IP could be used in a cyber attack, or was used for it.Ĭheck the Cobalt Strike tag in TCP 80 of available Banner Information to find Cobalt Strike data associated with the server. This IP address’s Inbound Critical Scoring yield a danger level of 99%. IP Intelligence analysis results of BotNet servers infected with Beacon malware by Cobalt Strike We can further analyze the IP intelligence of BotNet IP Addresses with Beacon installed by Cobalt Strike through Criminal IP Asset Search. As shown above, most of them have infected port 80 Cobalt Strike Beacon Malware-Infected BotNet Servers Statistics shown regarding open ports of Cobalt Strike infected servers. Statistics Show that Country with most servers infected with Cobalt Strike Malware is ChinaĪ total of 54 botnet servers are located in China, making it the country that owns most of the Cobalt Strike malware-infected servers.Ĭountry statistics shown on Criminal IP determine that China owns the most Cobalt Strike infected serversįurthermore, port statistics show that most servers have infected port 80 or 8080. However, the discovered servers are either allowing access to internal systems or are highly likely to be infected with ransomware. Of course, they may include the legally used Cobalt Strike, so not all of them can be judged as attacks. These 102 servers can be considered botnet servers already infected with Cobalt Strike malware. Search Query : “tag: Cobalt Strike” Results shown for “tag: Cobalt Strike” on Criminal IPĪs shown in the results, there are a total of 102 servers infected with Cobalt Strike out of all external servers. It’s simply a matter of using the Tag filter in Criminal IP’s Asset Search. While we can determine Cobalt Strike attacks through open source YARA rules, there is an easier way to find servers infected with this form of malware. Detect BotNet Servers Infected With Cobalt Strike Malware Because of this, the Google Cloud Threat Intelligence team recently released opensource YARA rules for determining malicious Cobalt Strike attacks. The legal distribution of this pentesting tool means that it’s harder to determine malicious attacks launched by this software. Because of this, Cobalt Strike is both classified as a useful pentesting tool and malware simultaneously. Cyber attackers use a pirated version of this application to launch attacks on vulnerable servers. However, not everyone uses Cobalt Strike in legally. Cobalt Strike is a tool used for penetration testing What is Cobalt Strike?Ĭobalt Strike is a paid penetration testing service, and plenty of Red Team users use this software to simulate penetration attacks. This article, therefore, discusses methods for finding web servers infected with Cobalt Strike (for legal pentesting or due to malicious intent) with Criminal IP. This method of attack consists of using a botnet to distribute Cobalt Strike malware and using ransomware and PC attacks to do so. There have been multiple instances of Cobalt Strike (a penetration testing tool) being used maliciously for ransomware attacks or intrusion into company’s internal systems.
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