""ET TROJAN W32/TrojanSpy.MSIL Fetch Time CnC Beacon""

SID: 2016533

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2013_03_05, deployment Perimeter, signature_severity Major, tag c2, updated_at 2013_03_05, 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: established,to_server

Contents:

  • Value: "/features/fetch/time/"

  • Value: !"User-Agent|3A|"

  • Value: !"Content-"

  • Value: !"Accept-"

Within:

PCRE:

Special Options:

  • http_uri

  • http_header

  • http_header

  • http_header

source