""ET TROJAN Zlader Ransomware Worm Propagating Over SMB v1 ASCII""
SID: 2023149
Revision: 3
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_09_01, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2016_09_01, 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: $HOME_NET
Destination Port: [445,139]
Flow: to_server,established
Contents:
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Value: "|FF|SMB|A2|" Depth: 5 Offset: 4
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Value: "|24|RECYCLE|2E|BIN|2E 7B|"
Within:
PCRE: "/\x24RECYCLE.BIN.\x7B[0-9A-F]{8}\x2D(?:[0-9A-F]{4}\x2D){3}[0-9A-F]{12}\x7D\x5C\x7B[0-9A-F]{8}\x2D(?:[0-9A-F]{4}\x2D){3}[0-9A-F]{12}\x7D.(?:scr|pif|cmd)/i"
Special Options:
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nocase
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fast_pattern