""ET TROJAN Win32/TrojanDownloader.Agent.RFS Variant Checkin""

SID: 2036276

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_04_20, deployment Perimeter, performance_impact Low, signature_severity Major, tag c2, updated_at 2022_04_20, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

Reference:

  • md5

  • 014d2e1a31ce397e7a5e3ba8edc45344

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: ".bin?ver="

  • Value: "&lip="

  • Value: "&mac="

  • Value: "User-Agent|3a 20|Mozilla|2f|4|2e|0|20 28|compatible|3b 20|MSIE|20|6|2e|0|3b 20|Windows|20|NT|20|5|2e|1|3b 20|SV1|3b 20 2e|NET|20|CLR|20|2|2e|0|2e|50727|3b 29 0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_header

source