""ET TROJAN Cobalt Strike Malleable C2 Beacon (Custom)""

SID: 2037844

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_28, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2022_07_28

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/image-directory/dz.png"

  • Value: "Mozilla/5.0|20 28|Linux|3b 20|Android 6.0|3b 20|HTC One X10 Build/MRA58K|3b 20|wv|29 20|AppleWebKit/537.36|20 28|KHTML, like Gecko|29 20|Version/4.0"

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

source