""ET WEB_CLIENT Possible Embedded NTLM Hash Theft Code""
SID: 2029329
Revision: 3
Class Type: attempted-user
Metadata: attack_target Client_Endpoint, created_at 2020_01_29, deployment Perimeter, signature_severity Minor, updated_at 2023_10_11, reviewed_at 2024_04_30
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
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Value: "src=file|3a 2f 2f 2f 5c 5c|"
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Value: "|5f|C$|5f|"
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Value: "visibility|3a|"
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Value: "hidden"
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Value: "src="
Within: 8
PCRE: "/^\s[\x22\x27]\sfile\x3a\x2f\x2f\x2f\x5c\x5c[^\x20]+\x5cC\$\x5c\s*[\x22\x27]/Rsi"
Special Options:
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file_data
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nocase
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fast_pattern
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nocase
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nocase