""ET TROJAN MRCR1 Ransomware Checkin M2""

SID: 2023692

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_01_03, deployment Perimeter, malware_family Ransomware, signature_severity Major, tag Ransomware, updated_at 2017_01_03, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • a1d83e290429477f05c0eaddafdb0355

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST" Depth: 4

  • Value: ".php|20|HTTP/1.1|0d 0a|"

  • Value: "|43 50 55 20 4d 6f 64 65 6c 3a|"

  • Value: "|43 50 55 20 43 6f 75 6e 74 3a|"

  • Value: "|47 65 74 52 41 4d 3a|"

  • Value: "|5b 53 79 73 74 65 6d 20 50 72 6f 63 65 73 73 5d|"

  • Value: "|5b 50 72 6f 67 72 61 6d 6d 73 5d|"

Within:

PCRE:

Special Options:

  • fast_pattern

source