""ET TROJAN Win32/Teslacrypt Ransomware HTTP CnC Beacon M1""

SID: 2020717

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_03_20, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_03_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • c075fa8484d52c3978826c2f07ce9a9c

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: "/state"

  • Value: ".php?"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

Within:

PCRE: "/\/state[^\x2f].php\?[A-Za-z0-9+/]={0,2}$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_header

source