""ET TROJAN Yandexbot Request Outbound""
SID: 2013254
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Web_Server, created_at 2011_07_12, deployment Perimeter, signature_severity Informational, tag WebCrawler, updated_at 2011_07_12, mitre_tactic_id TA0043, mitre_tactic_name Reconnaissance, mitre_technique_id T1593, mitre_technique_name Search_Open_Websites
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
- Value: "User-Agent|3a| YandexBot"
Within:
PCRE:
Special Options:
- http_header