""ET TROJAN Bitter RAT HTTP CnC Beacon M2""

SID: 2025198

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2018_01_11, deployment Perimeter, signature_severity Major, tag c2, updated_at 2022_04_18, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 8d42c01180be7588a2a68ad96dd0cf85

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: ".php?TIe="

  • Value: !"User-Agent|3a|"

  • Value: !"Accept"

  • Value: !"Referer"

Within:

PCRE: "/.php\?TIe=[a-zA-Z0-9\x21\x2a\x2f\x2e\x3b\x3a\x5b\x5d\x7b\x7d]+$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

source