""ET MOBILE_MALWARE Trojan-Spy.AndroidOS.Femas.b CnC Beacon""

SID: 2023933

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Android, attack_target Client_Endpoint, created_at 2017_02_16, deployment Perimeter, signature_severity Major, tag Android, tag c2, updated_at 2017_02_16, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST"

  • Value: ".php"

  • Value: "|3b 20|Android|20|"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|Content-Language|3a 20|en-US|0d 0a|Connection|3a 20|Keep-Alive|0d 0a|" Depth: 98

  • Value: !"Referer|3a 20|"

  • Value: "&method="

Within:

PCRE: "/.php$/U"

Special Options:

  • http_method

  • nocase

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_client_body

source