""ET TROJAN [PTsecurity] Possible Cobalt Strike payload""

SID: 2024771

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_09_27, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, signature_severity Major, updated_at 2019_04_19

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "Content-Length|3a 20|"

  • Value: "|0d 0a|"

  • Value: "|fc e8 00 00 00 00 eb|" Depth: 7

Within: 4

PCRE:

Special Options:

  • http_stat_code

  • http_header

  • http_header

  • file_data

  • fast_pattern

source