Swachchhanda Shrawan Poudel
3e9318e23f
removed: FileFix - Suspicious Child Process from Browser File Upload Abuse - Deprecated in favor of b5b29e4e-31fa-4fdf-b058-296e7a1aa0c2 new: DNS Query by Finger Utility new: Network Connection Initiated via Finger.EXE fix: Suspicious Explorer Process with Whitespace Padding - ClickFix/FileFix - Fix selection to use ParentImage instead of Image field new: Suspicious FileFix Execution Pattern update: FileFix - Command Evidence in TypedPaths - Added more markers update: Potential ClickFix Execution Pattern - Registry - Add 2 new strings, "finger" and "identification" chore: Update "test_rules.py" filename test with better output formatting --------- Co-authored-by: phantinuss <79651203+phantinuss@users.noreply.github.com> Co-authored-by: nasbench <monsteroffire2@gmail.com>
35 lines
1.5 KiB
YAML
35 lines
1.5 KiB
YAML
title: Finger.EXE Execution
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id: af491bca-e752-4b44-9c86-df5680533dbc
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related:
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- id: c082c2b0-525b-4dbc-9a26-a57dc4692074
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type: similar
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- id: 2fdaf50b-9fd5-449f-ba69-f17248119af6
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type: similar
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status: test
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description: |
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Detects execution of the "finger.exe" utility.
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Finger.EXE or "TCPIP Finger Command" is an old utility that is still present on modern Windows installation. It Displays information about users on a specified remote computer (typically a UNIX computer) that is running the finger service or daemon.
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Due to the old nature of this utility and the rareness of machines having the finger service. Any execution of "finger.exe" can be considered "suspicious" and worth investigating.
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references:
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- https://twitter.com/bigmacjpg/status/1349727699863011328?s=12
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- https://app.any.run/tasks/40115012-a919-4208-bfed-41e82cb3dadf/
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- http://hyp3rlinx.altervista.org/advisories/Windows_TCPIP_Finger_Command_C2_Channel_and_Bypassing_Security_Software.txt
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author: Florian Roth (Nextron Systems), omkar72, oscd.community
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date: 2021-02-24
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modified: 2024-06-27
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tags:
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- attack.command-and-control
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- attack.t1105
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logsource:
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category: process_creation
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product: windows
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detection:
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selection:
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- OriginalFileName: 'finger.exe'
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- Image|endswith: '\finger.exe'
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condition: selection
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falsepositives:
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- Admin activity (unclear what they do nowadays with finger.exe)
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level: high
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regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_finger_execution/info.yml
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