""ET TROJAN Fake Browser Update via Error Page Payload""
SID: 2044885
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2023_04_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_04_04
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "let|20|agent|20 3d 20|navigator|2e|userAgent|2e|toLowerCase|28 29 3b|" Depth: 46
-
Value: "let|20|payload|5f|chrome|20 3d 20 27|"
-
Value: "let|20|payload|5f|firefox|20 3d 20 27|"
-
Value: "let|20|ua1|20 3d 20 27 27 3b|"
-
Value: "let|20|payload|20 3d 20 27 27 3b|"
Within:
PCRE:
Special Options:
-
file_data
-
fast_pattern