""ET TROJAN Win32/Hyteod CnC Beacon""

SID: 2020821

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_03_31, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_03_31, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • f2ad19a08063171b039accd24b0c27ca

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: "|5f 5e 5b 8b e5 5d|"

  • Value: !"Accept-"

  • Value: !"Connection|3a|"

  • Value: !"Referer|3a|"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (compatible|3b| MSIE 9.0|3b| Windows NT 6.1|3b| Trident/5.0|29 0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

source