Process Memory Dump Via Dotnet-Dump

calendar Apr 26, 2024 · attack.defense_evasion attack.t1218  ·
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Detects the execution of "dotnet-dump" with the "collect" flag. The execution could indicate potential process dumping of critical processes such as LSASS.

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 1title: Process Memory Dump Via Dotnet-Dump
 2id: 53d8d3e1-ca33-4012-adf3-e05a4d652e34
 3status: test
 4description: |
 5        Detects the execution of "dotnet-dump" with the "collect" flag. The execution could indicate potential process dumping of critical processes such as LSASS.
 6references:
 7    - https://learn.microsoft.com/en-us/dotnet/core/diagnostics/dotnet-dump#dotnet-dump-collect
 8    - https://twitter.com/bohops/status/1635288066909966338
 9author: Nasreddine Bencherchali (Nextron Systems)
10date: 2023/03/14
11tags:
12    - attack.defense_evasion
13    - attack.t1218
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection_img:
19        - Image|endswith: '\dotnet-dump.exe'
20        - OriginalFileName: 'dotnet-dump.dll'
21    selection_cli:
22        CommandLine|contains: 'collect'
23    condition: all of selection_*
24falsepositives:
25    - Process dumping is the expected behavior of the tool. So false positives are expected in legitimate usage. The PID/Process Name of the process being dumped needs to be investigated
26level: medium

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