File Transfer Solutions Targeted by CL0P Ransomware Group

The CL0P Ransomware Group, also known as TA505, has exploited zero-day vulnerabilities across a series of file transfer solutions since December 2020. File transfer solutions often contain sensitive information from a variety of organizations. This stolen information is used to extort victims to pay ransom demands. In 2023, CL0P claimed credit for the exploitation of vulnerabilities in both Fortra’s GoAnywhere Managed File Transfer (MFT) and Progress Software’s MOVEit Transfer solutions.

Research conducted as part of security audits has revealed additional vulnerabilities. This dashboard contains a list of vulnerabilities known to be exploited by the CL0P ransomware group as well as other vulnerabilities that could be leveraged by CL0P and other threat actors. Operations teams can use this data to identify the assets affected by the associated CVEs targeted by the CL0P ransomware group. The following Nessus plugins identify the affected vulnerabilities:

•  90190: Progress MOVEit Transfer Installed (Windows)
• 176735: Progress MOVEit Transfer Web Interface Detection
• 176736: Progress MOVEit Transfer FTP Detection
• 176567: Progress MOVEit Transfer
• 177371: Progress MOVEit Transfer Critical Vulnerability (June 15, 2023)

The dashboard and its components are available in the Tenable.sc Feed, a comprehensive collection of dashboards, reports, assurance report cards and assets. The dashboard can be easily located in the Tenable Security Center Feed under the category Security Industry Trends.

The requirements for this dashboard are:

• Tenable Security Center 6.1.1
• Tenable Nessus 10.5.2

The Security Response Team (SRT) in Tenable Research digs into technical details and tests proof-of-concept attacks, when available, to ensure customers are fully informed of risks. The SRT also provides breakdowns for the latest vulnerabilities in the Tenable blog.

Tenable Research has posted the FAQ for MOVEit Transfer Vulnerabilities and CL0P Ransomware Gang blog post to provide the latest information about this threat.

Components

CL0P Ransomware Group MOVEit – This table displays assets that are vulnerable to recent targeted attacks by the CL0P Ransomware Group (aka TA505) related to Progress Software’s MOVEit Transfer solutions. The component specifically provides results for pluginIDs 90190, 176735, 176736, 176567, 177082, and 177371. These vulnerabilities are associated with a zero-day that is actively being exploited. The table displays the IP address, NetBIOS, DNS, and OS CPE of any identified vulnerable assets, and the Vulnerabilities severity bar.

CL0P Ransomware Group Fortra GoAnywhere MFT – This table displays assets that may be vulnerable to recent targeted attacks by the CL0P Ransomware Group (aka TA505) related to Fortra GoAnywhere Managed File Transfer (MFT). The component specifically provides results for pluginIDs 171845, 171558, 171771, and 113896. These vulnerabilities are associated with a zero-day that is actively being exploited. The table displays the IP address, NetBIOS, DNS, OS CPE of any identified vulnerable assets, and the Vulnerabilities severity bar. 

CL0P Ransomware Group Accellion File Transfer – This table displays assets that may be vulnerable to recent targeted attacks by the CL0P Ransomware Group (aka TA505) for CGI abuses related to Accellion Secure File Transfer. The component specifically provides results for pluginIDs 85007, 146927, and 154933. These vulnerabilities are associated with a zero-day that is actively being exploited by the CL0P Ransomware Group, also known as TA505. The table displays the IP address, NetBIOS, DNS, and OS CPE of any identified vulnerable assets, and the Vulnerabilities severity bars.

CL0P Ransomware Group Patched Assets – This table displays vulnerabilities that have been remediated related to recent targeted attacks by the CL0P Ransomware Group (aka TA505). The remediated vulnerabilities displayed are specifically related to the vulnerabilities related to Progress Software’s MOVEit Transfer solutions, Fortra GoAnywhere Managed File Transfer, and Accellion Secure File Transfer. These vulnerabilities are associated with a zero-day that is actively being exploited. The table displays the PluginID, Vulnerability Name, Plugin Family, Severity, and Total of remediated vulnerabilities.