""ET TROJAN LolliCrypt Ransomware Sending Data to CnC""

SID: 2031160

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_11_02, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2020_11_02, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • 8e23b560b66134dcc4e21c461ed1a399

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: "key=" Depth: 4

  • Value: "&id="

  • Value: "&date="

  • Value: !"Referer|3a|"

Within:

PCRE: "/^key=[^\r\n]+&id=[^\r\n]+&date=(?:[A-Za-z0-9%2b%2f]{4})*(?:[A-Za-z0-9%2b%2f]{2}%3d%3d|[A-Za-z0-9%2b%2f]{3}%3d|[A-Za-z0-9%2b%2f]{4})$/Ps"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

source