Talos Rules 2020-03-11
Talos is aware of vulnerabilities affecting products from Microsoft Corporation.

Microsoft Vulnerability CVE-2020-0796: A coding deficiency exists in Microsoft Server Message Block 3.0 protocol that may lead to remote code execution.

Rules to detect attacks targeting these vulnerabilities are included in this release and are identified with GID 1, SIDs 53425 through 53428.

Talos has added and modified multiple rules in the os-windows rule sets to provide coverage for emerging threats from these technologies.

For information about Snort Subscriber Rulesets available for purchase, please visit the Snort product page.

Change logs

2983

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2983.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)

3000

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 3000.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (snort3-os-windows.rules)
 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (snort3-os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (snort3-os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (snort3-os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (snort3-app-detect.rules)

29111

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091101.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)

29130

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091300.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)

29141

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091401.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)

29150

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091500.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)

29151

2020-03-12 15:57:16 UTC

Snort Subscriber Rules Update

Date: 2020-03-11

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091501.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:53428 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53427 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53426 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)
 * 1:53425 <-> ENABLED <-> OS-WINDOWS Microsoft Windows SMB srv2.sys remote code execution attempt (os-windows.rules)

Modified Rules:


 * 1:13360 <-> DISABLED <-> APP-DETECT FTP 530 Login failed response (app-detect.rules)