""ET MALWARE W32/PullUpdate.Adware CnC Beacon""

SID: 2018368

Revision: 5

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2014_04_07, deployment Perimeter, signature_severity Major, tag c2, updated_at 2019_08_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 129563c2ab034af094422db408d7d74f

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "?v="

  • Value: !"Referer|3a 20|"

  • Value: !"|0d 0a|Accept"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/^\/[a-z]{2}\x3Fv\x3D[0-9]$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

source