Talos Rules 2020-01-21
This release adds and modifies rules in several categories.

Talos has added and modified multiple rules in the browser-ie, browser-webkit, file-other, malware-cnc and server-webapp 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

29151

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)

Modified Rules:


 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)

29150

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)

Modified Rules:


 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)

29141

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)

Modified Rules:


 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)

29130

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)
 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)

Modified Rules:


 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)

29111

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)

Modified Rules:


 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)

3000

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (snort3-browser-webkit.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (snort3-server-other.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (snort3-browser-webkit.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (snort3-malware-cnc.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (snort3-malware-cnc.rules)
 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (snort3-server-webapp.rules)
 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (snort3-server-other.rules)

Modified Rules:


 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (snort3-browser-ie.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (snort3-browser-ie.rules)
 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (snort3-browser-ie.rules)
 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (snort3-file-other.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (snort3-browser-ie.rules)

2983

2020-01-21 18:47:33 UTC

Snort Subscriber Rules Update

Date: 2020-01-21

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:


 * 1:52620 <-> ENABLED <-> SERVER-WEBAPP Citrix ADC and Gateway arbitrary code execution attempt (server-webapp.rules)
 * 1:52624 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)
 * 1:52621 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52626 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52625 <-> DISABLED <-> SERVER-OTHER OpenSSL anonymous ECDH denial of service attempt (server-other.rules)
 * 1:52622 <-> DISABLED <-> BROWSER-WEBKIT Apple Safari user assisted applescript code execution attempt (browser-webkit.rules)
 * 1:52623 <-> ENABLED <-> MALWARE-CNC Win.Trojan.Agent variant outbound connection (malware-cnc.rules)

Modified Rules:


 * 1:21484 <-> DISABLED <-> FILE-OTHER ZIP file name overflow attempt (file-other.rules)
 * 1:48700 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48701 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)
 * 1:48699 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine downgrade detected (browser-ie.rules)
 * 1:48702 <-> ENABLED <-> BROWSER-IE Microsoft Internet Explorer JavaScript engine memory corruption attempt (browser-ie.rules)