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@ -18,26 +18,26 @@
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tags:
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- CVE-2021-44228
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query: |
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let log4j_execve=()
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{
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Syslog
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| where SyslogMessage has "AUOMS_EXECVE"
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| where SyslogMessage has 'jndi' and SyslogMessage has_any ('ldap', 'dns', 'rmi', 'corba', 'iiop', 'nis', 'nds')
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| parse SyslogMessage with "type=" EventType " audit(" * "): " EventData
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| where EventType =~ "AUOMS_EXECVE"
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| project TimeGenerated, EventType, Computer, EventData
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| extend EventData = trim_end('containerid=',EventData)
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| parse kind=regex EventData with * "success=" success " exit=" * "ppid=" ppid "pid=" pid
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"audit_user=" audit_user "auid=" * "user=" user " uid=" uid " group=" * "comm=\"" comm "\" exe=\"" exe
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"\"" * "cwd=\"" cwd "\" name=\"" name "\" (inode|nametype)=" * "(proctitle|cmdline)=" cmdline
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| extend cmdline = trim_end('redactors=.*',cmdline)
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};
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log4j_execve
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| where comm has_any ("wget","curl")
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| where cmdline has_any ("${jndi:ldap","${jndi:dns","${jndi:rmi","${jndi:corba","${jndi:iiop","${jndi:nis", "${jndi:nds")
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| project TimeGenerated, Computer, audit_user, user, cmdline
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| extend AccountCustomEntity = user, HostCustomEntity = Computer, timestamp = TimeGenerated
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| sort by TimeGenerated desc
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let log4j_execve=()
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{
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Syslog
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| where SyslogMessage has "AUOMS_EXECVE"
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| where SyslogMessage has 'jndi' and SyslogMessage has_any ('ldap', 'dns', 'rmi', 'corba', 'iiop', 'nis', 'nds')
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| parse SyslogMessage with "type=" EventType " audit(" * "): " EventData
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| where EventType =~ "AUOMS_EXECVE"
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| project TimeGenerated, EventType, Computer, EventData
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| extend EventData = trim_end('containerid=',EventData)
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| parse kind=regex EventData with * "success=" success " exit=" * "ppid=" ppid "pid=" pid
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"audit_user=" audit_user "auid=" * "user=" user " uid=" uid " group=" * "comm=\"" comm "\" exe=\"" exe
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"\"" * "cwd=\"" cwd "\" name=\"" name "\" (inode|nametype)=" * "(proctitle|cmdline)=" cmdline
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| extend cmdline = trim_end('redactors=.*',cmdline)
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};
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log4j_execve
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| where comm has_any ("wget","curl")
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| where cmdline has_any ("${jndi:ldap","${jndi:dns","${jndi:rmi","${jndi:corba","${jndi:iiop","${jndi:nis", "${jndi:nds")
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| project TimeGenerated, Computer, audit_user, user, cmdline
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| extend AccountCustomEntity = user, HostCustomEntity = Computer, timestamp = TimeGenerated
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| sort by TimeGenerated desc
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entityMappings:
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- entityType: Host
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fieldMappings:
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