""ET TROJAN [ANY.RUN] RCRU64 Ransomware Variant CnC Activity""
SID: 2045821
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 2023_05_23, deployment Perimeter, malware_family RUCU64, performance_impact Low, confidence High, signature_severity Critical, tag Ransomware, updated_at 2023_06_23, 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:
-
Value: "GET"
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Value: "_And_Netword_Drive_Size|3a|"
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Value: "_Encryption_Mode"
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Value: !"User-Agent|3a 20|"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
-
fast_pattern
-
http_uri
-
http_header