""ET TROJAN Win32/IcedID WebSocket Request M2""

SID: 2028955

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 2019_11_08, deployment Perimeter, malware_family IcedID, performance_impact Moderate, signature_severity Major, updated_at 2019_11_08

Reference:

  • md5

  • 977a264f70acf703333f298019c3abd4

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/data3.php?" Depth: 11

  • Value: "|0d 0a|Upgrade|3a 20|websocket|0d 0a|Connection|3a 20|Upgrade|0d 0a|Sec-WebSocket-Version|3a 20|"

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+\r\nUpgrade\x3a\x20websocket\r\nConnection\x3a\x20Upgrade\r\nSec-WebSocket-Version\x3a\x20[^\r\n]+\r\nSec-WebSocket-Key\x3a\x20[^\r\n]+\r\n$/Hm"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source