""ET TROJAN Revoyem Ransomware Activity""
SID: 2016732
Revision: 3
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2013_04_06, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2013_04_06, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: ".php?id="
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Value: "&gr"
Within:
PCRE: "/.php\?id=[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}-(\d{1,3}.){3}\d{1,3}&gr/U"
Special Options:
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http_uri
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http_uri