""ET TROJAN Possible DACLS RAT CnC (Log Check)""

SID: 2029856

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2020_04_10, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2020_04_10

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: "Content-Length|3a 20|9|0d 0a|"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64)"

  • Value: "|0d 0a 0d 0a|log=check"

  • Value: "HTTP/1.0|0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_header

  • fast_pattern

source