87 lines
2.0 KiB
YAML
87 lines
2.0 KiB
YAML
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title: Webshell Detection With Command Line Keywords
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author: Florian Roth, Jonhnathan Ribeiro, Anton Kutepov, oscd.community
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date: 2017/01/01
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description: Detects certain command line parameters often used during reconnaissance
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activity via web shells
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detection:
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SELECTION_1:
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EventID: 1
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SELECTION_10:
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Image: '*\wmic.exe'
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SELECTION_11:
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CommandLine: '* /node:*'
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SELECTION_12:
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Image:
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- '*\whoami.exe'
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- '*\systeminfo.exe'
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- '*\quser.exe'
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- '*\ipconfig.exe'
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- '*\pathping.exe'
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- '*\tracert.exe'
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- '*\netstat.exe'
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- '*\schtasks.exe'
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- '*\vssadmin.exe'
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- '*\wevtutil.exe'
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- '*\tasklist.exe'
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SELECTION_13:
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CommandLine:
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- '* Test-NetConnection *'
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- '*dir \\*'
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SELECTION_2:
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ParentImage:
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- '*\w3wp.exe'
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- '*\php-cgi.exe'
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- '*\nginx.exe'
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- '*\httpd.exe'
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SELECTION_3:
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ParentImage:
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- '*\apache*'
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- '*\tomcat*'
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SELECTION_4:
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EventID: 1
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SELECTION_5:
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Image:
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- '*\net.exe'
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- '*\net1.exe'
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SELECTION_6:
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CommandLine:
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- '* user *'
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- '* use *'
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- '* group *'
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SELECTION_7:
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Image: '*\ping.exe'
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SELECTION_8:
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CommandLine: '* -n *'
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SELECTION_9:
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CommandLine:
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- '*&cd&echo*'
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- '*cd /d *'
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condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3) and (SELECTION_4 and (((SELECTION_5
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and SELECTION_6) or (SELECTION_7 and SELECTION_8) or SELECTION_9) or (SELECTION_10
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and SELECTION_11) or SELECTION_12 or SELECTION_13)))
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falsepositives:
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- unknown
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fields:
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- CommandLine
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- ParentCommandLine
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id: bed2a484-9348-4143-8a8a-b801c979301c
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level: high
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logsource:
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category: process_creation
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product: windows
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modified: 2021/03/02
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references:
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- https://www.fireeye.com/blog/threat-research/2013/08/breaking-down-the-china-chopper-web-shell-part-ii.html
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- https://unit42.paloaltonetworks.com/bumblebee-webshell-xhunt-campaign/
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status: experimental
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tags:
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- attack.persistence
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- attack.t1505.003
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- attack.t1018
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- attack.t1033
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- attack.t1087
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- attack.privilege_escalation
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- attack.t1100
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ruletype: SIGMA
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