""ET MALWARE W32/InstallRex.Adware Report CnC Beacon""

SID: 2017912

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2013_12_30, 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

  • 9abbb5ea3f55b5182687db69af6cba66

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: "/?report_version="

  • Value: "data=" Depth: 5

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_client_body

source