""ET CURRENT_EVENTS Tech Support Phone Scam Landing 2023-04-17""
SID: 2044972
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2023_04_17, deployment Perimeter, signature_severity Major, updated_at 2023_04_17
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|"
-
Value: "Call"
-
Value: "Security Helpline immediately."
Within:
PCRE:
Special Options:
-
http_stat_code
-
http_header
-
nocase
-
http_header
-
nocase
-
http_header
-
nocase
-
fast_pattern