48 lines
1.7 KiB
TOML
48 lines
1.7 KiB
TOML
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[hunt]
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author = "Elastic"
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description = """
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This hunt provides several OSQuery queries that can aid in the detection of reverse/bind shells. Reverse shells are a type of shell in which the target machine communicates back to the attacking machine. Bind shells are a type of shell in which the target machine opens a communication port on the victim machine and waits for an attacker to connect to it. These shells can be used by attackers to gain remote access to a system.
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"""
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integration = ["endpoint"]
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uuid = "7422faf1-ba51-49c3-b8ba-13759e6bcec4"
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name = "Persistence Through Reverse/Bind Shells"
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language = ["SQL"]
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license = "Elastic License v2"
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notes = [
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"The hunt provides OSQuery queries to detect reverse/bind shells on Linux systems.",
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"The first hunt query retrieves information about open sockets on the system.",
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"The second hunt query retrieves information about running processes on the system.",
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"The third hunt query retrieves information about listening ports on the system.",
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"Investigate strange or unexpected open sockets, processes, or listening ports on the system.",
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"Use the information from each hunt to pivot and investigate further for potential reverse/bind shells."
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]
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mitre = ["T1059.004"]
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query = [
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'''
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SELECT (
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CASE family
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WHEN 2 THEN 'IP4'
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WHEN 10 THEN 'IP6'
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ELSE family END
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) AS family, (
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CASE protocol
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WHEN 6 THEN 'TCP'
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WHEN 17 THEN 'UDP'
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ELSE protocol END
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) AS protocol, local_address, local_port,
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remote_address, remote_port
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FROM process_open_sockets
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WHERE family IN (2, 10)
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AND protocol IN (6, 17)
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''',
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'''
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SELECT cmdline, name, path, pid, state, threads, total_size
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FROM processes
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WHERE cmdline != ''
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''',
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'''
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SELECT pid, address, port, socket, protocol, path FROM listening_ports
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'''
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]
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