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48 lines
1.4 KiB
YAML
48 lines
1.4 KiB
YAML
action: global
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title: Suspicious Commandline Escape
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description: Detects suspicious process that use escape characters
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status: experimental
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references:
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- https://twitter.com/vysecurity/status/885545634958385153
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- https://twitter.com/Hexacorn/status/885553465417756673
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- https://twitter.com/Hexacorn/status/885570278637678592
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- https://www.fireeye.com/blog/threat-research/2017/06/obfuscation-in-the-wild.html
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- http://www.windowsinspired.com/understanding-the-command-line-string-and-arguments-received-by-a-windows-program/
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author: juju4
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tags:
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- attack.defense_evasion
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- attack.t1140
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detection:
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selection:
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CommandLine:
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#- '^'
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#- '@'
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# 0x002D -, 0x2013 , 0x2014 , 0x2015 ― ... FIXME! how to match hexa form?
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# - '-'
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# - '―'
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#- 'c:/'
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- '<TAB>'
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- '^h^t^t^p'
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- 'h"t"t"p'
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condition: selection
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falsepositives:
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- False positives depend on scripts and administrative tools used in the monitored environment
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level: low
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---
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# Windows Audit Log
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logsource:
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product: windows
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service: security
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definition: 'Requirements: Audit Policy : Detailed Tracking > Audit Process creation, Group Policy : Administrative Templates\System\Audit Process Creation'
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detection:
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selection:
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EventID: 4688
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---
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# Sysmon
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logsource:
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product: windows
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service: sysmon
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detection:
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selection:
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EventID: 1
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