""ET TROJAN MSIL/n2019cov (COVID-19) Ransomware CnC Checkin""

SID: 2029736

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 2020_03_25, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, tag Ransomware, updated_at 2020_03_25, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • f02e5ae5b997e447a43ace281bc2bae9

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: ".php"

  • Value: "usuario=" Depth: 8

  • Value: "|20|-|20|"

  • Value: "|20|-|20|"

  • Value: "&llave1="

  • Value: "&llave2="

  • Value: !"Referer|3a|"

  • Value: !"User-Agent|3a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

source