""ET WEB_CLIENT Tech Support Scam Landing 2018-07-18""
SID: 2025831
Revision: 3
Class Type: trojan-activity
Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_18, deployment Perimeter, signature_severity Major, tag Tech_Support_Scam, updated_at 2019_08_16
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "401"
-
Value: "WWW-Authenticate|3a 20|Basic realm=|22|Microsoft has detected suspicious activity"
Within:
PCRE:
Special Options:
-
http_stat_code
-
http_header