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.

Change logs

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)

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)

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)

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)

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)

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)

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)