""ET TROJAN Observed Sidewinder APT User-Agent""

SID: 2029825

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_04_07, deployment Perimeter, malware_family Sidewinder, signature_severity Major, updated_at 2020_04_07

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 20|Mozilla/4.0 (compatible|3b 20|Win32|3b 20|WinHttp.WinHttpRequest.56)|0d 0a|"

Within:

PCRE:

Special Options:

  • http_header

source