""ET TROJAN Win32/IceXLoader Sending Command Acknowledgement (POST)""

SID: 2037044

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_06_21, deployment Perimeter, malware_family IceXLoader, signature_severity Major, updated_at 2022_06_21

Reference:

  • md5

  • 54fb25c20d4191ff7e5185812485282f

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|"

  • Value: "Done=" Depth: 5

  • Value: !"Referer"

Within:

PCRE: "/^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}\r\n/R"

Special Options:

  • http_method

  • nocase

  • http_client_body

  • fast_pattern

  • http_header

source