""ET MALWARE MALWARE W32/WinWrapper.Adware POST CnC Beacon""

SID: 2020628

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_03_06, 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

  • 2d71e44c02784d579fb4af18bbbeae6c

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: "/api.cgi?act="

  • Value: "&appid="

  • Value: "&proto="

  • Value: !"Referer|3a|"

  • Value: "User-Agent|3a 20|WinWrapper|0d 0a|"

  • Value: "{|22|appId|22 3a 22|"

  • Value: "|22|uuId|22 3a 22|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • http_header

  • http_header

  • http_client_body

  • http_client_body

source