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48 lines
2.3 KiB
YAML
48 lines
2.3 KiB
YAML
title: Exploit Framework User Agent
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status: experimental
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description: Detects suspicious user agent strings used by exploit / pentest framworks like Metasploit in proxy logs
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reference:
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- https://blog.didierstevens.com/2015/03/16/quickpost-metasploit-user-agent-strings/
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author: Florian Roth
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logsource:
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category: proxy
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detection:
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selection:
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UserAgent:
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# Cobalt Strike https://www.cobaltstrike.com/help-malleable-c2
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- 'Internet Explorer *'
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- 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; InfoPath.2)' # https://goo.gl/f4H5Ez
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# Metasploit Framework - Analysis by Didier Stevens https://blog.didierstevens.com/2015/03/16/quickpost-metasploit-user-agent-strings/
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- 'Mozilla/4.0 (compatible; Metasploit RSPEC)'
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- 'Mozilla/4.0 (compatible; MSIE 6.1; Windows NT)'
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- 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)' # old browser, rare, base-lining needed
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- 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)' # old browser, rare, base-lining needed
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- 'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)' # old browser, rare, base-lining needed
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- 'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0; Trident/4.0; SIMBAR={7DB0F6DE-8DE7-4841-9084-28FA914B0F2E}; SLCC1; .N'
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- 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)' # only use in proxy logs - not for detection in web server logs
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- 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/525.13 (KHTML, like Gecko) Chrome/4.0.221.6 Safari/525.13'
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# Metasploit Update by Florian Roth 08.07.2017
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- 'Mozilla/5.0'
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- 'Mozilla/4.0 (compatible; SPIPE/1.0'
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# - 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)' # too many false positives expected
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# - 'Mozilla/5.0 (Windows NT 6.1; Trident/7.0; rv:11.0) like Gecko' # too many false positives expected
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- 'Mozilla/5.0 (Windows NT 6.3; rv:39.0) Gecko/20100101 Firefox/35.0'
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- 'Sametime Community Agent' # Unknown if prone to false positives - used in https://goo.gl/gHZkeR
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- 'X-FORWARDED-FOR'
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- 'DotDotPwn v2.1'
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- 'SIPDROID'
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# Exploits
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- '*wordpress hash grabber*'
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- '*exploit*'
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condition: selection
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fields:
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- ClientIP
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- URL
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- UserAgent
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falsepositives:
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- Unknown
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level: high
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