""ET TROJAN MSIL/Spy.Keylogger.ENJ Variant CnC Activity""

SID: 2031648

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_02_23, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2021_02_23

Reference:

  • md5

  • 9b48e6da117f45841cb629964af7e463

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "discord.com"

  • Value: "username=New+User+open+your+virus&content=%60%60%60%0aUser+name+%3a+" Depth: 68

  • Value: "POST /api/webhooks/" Depth: 19

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

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+discord.com/Hmi"

Special Options:

  • http_header

  • fast_pattern

  • http_client_body

  • http_header

source