""ET TROJAN ICEFOG-P Variant CnC Checkin M2""

SID: 2027432

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_06_04, deployment Perimeter, malware_family ICEFOG_P, performance_impact Low, signature_severity Major, tag APT, tag IceFog, updated_at 2019_06_04

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: ".jpg"

  • Value: "|00 3a 00 7c 00|d|00|i|00|s|00|k|00|" Depth: 15

Within:

PCRE: "/_[A-F0-9]{12}&filename=\w{1,20}.jpg$/Ui"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

source