""ET TROJAN SQUIRRELWAFFLE Server Response""

SID: 2033982

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 2021_09_17, deployment Perimeter, malware_family SQUIRRELWAFFLE, performance_impact Moderate, signature_severity Major, updated_at 2021_09_17

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "Content-Type|3a 20|text/html|3b 20|charset=UTF-8|0d 0a|"

  • Value: "|0d 0d 0d 09 09 09 0a 0a 0a|" Depth: 9

  • Value: "|0a 0a 0a 09 09 09 0d 0d 0d|"

Within:

PCRE: "/^.{4}(?:R(?:k(?:Z(?:GQkBG|CQEY)|BCRUVG)|0FFRkFH|UJDQUE)|Q(?:U(?:V(?:CQ0FB|GQUc)|NCRkI)|kFDQkZC|EJFRUY)|(?:Z(?:AQkVF|GRkJA)R|JBQ0JGQ)g|FFQkNBQQ|dBRUZBRw)/R"

Special Options:

  • http_stat_code

  • http_header

  • file_data

  • fast_pattern

source