""ET TROJAN Possible Locky Ransomware Writing Encrypted File over - SMB and SMB-DS v2""
SID: 2022639
Revision: 6
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2016_03_23, deployment Perimeter, malware_family Locky, signature_severity Major, tag Ransomware, updated_at 2022_10_10, 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: [445,139]
Flow: to_server,established
Contents:
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Value: "|FE|SMB|40 00|" Depth: 6 Offset: 4
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Value: "|05 00|"
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Value: "|00|.|00|l|00|o|00|c|00|k|00|y|00 00|"
Within: 2
PCRE:
Special Options:
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nocase
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fast_pattern