""ET TROJAN BUILDINGCAN CnC Activity""

SID: 2030932

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Moderate, signature_severity Major, updated_at 2020_09_30

Reference:

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: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64) Chrome/28.0.1500.95 Safari/537.36|0d 0a|"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"

  • Value: "id=" Depth: 3

Within:

PCRE: "/^id=[^&]+(?:&(?:boardid|bbsNo|strBoardID|userid|bbs|filename|code|pid|seqNo|ReportID|v|PageNumber|num|view|read|action|page|mode|idx|cateId|bbsId|pType|pcode|index|tbl|idx_num|act|bbs_id|bbs_form|bid|bbscate|menu|tcode|b_code|bname|tb|borad01|borad02|borad03|mid|newsid|table|Board_seq|bc_idx|seq|ArticleID|B_Notice|nowPage|webid|boardDiv|sub_idxa)=[^&]+){3}$/P"

Special Options:

  • http_method

  • http_header

  • http_header

  • http_client_body

source