ETW Logging/Processing Option Disabled On IIS Server

calendar Oct 6, 2024 · attack.defense-evasion attack.t1562.002 attack.t1505.004  ·
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Detects changes to of the IIS server configuration in order to disable/remove the ETW logging/processing option.

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 1title: ETW Logging/Processing Option Disabled On IIS Server
 2id: a5b40a90-baf5-4bf7-a6f7-373494881d22
 3status: experimental
 4description: Detects changes to of the IIS server configuration in order to disable/remove the ETW logging/processing option.
 5references:
 6    - https://learn.microsoft.com/en-us/iis/manage/provisioning-and-managing-iis/configure-logging-in-iis
 7    - https://www.microsoft.com/en-us/security/blog/2022/12/12/iis-modules-the-evolution-of-web-shells-and-how-to-detect-them/
 8    - https://learn.microsoft.com/en-us/iis/configuration/system.applicationhost/sites/sitedefaults/logfile/
 9author: frack113, Nasreddine Bencherchali
10date: 2024-10-06
11tags:
12    - attack.defense-evasion
13    - attack.t1562.002
14    - attack.t1505.004
15logsource:
16    product: windows
17    service: iis-configuration
18detection:
19    selection:
20        EventID: 29
21        Configuration|endswith: '@logTargetW3C'
22        OldValue|contains: 'ETW'
23    filter_main_etw_added:
24        NewValue|contains: 'ETW'
25    condition: selection and not 1 of filter_main_*
26falsepositives:
27    - Legitimate administrator activity
28level: medium

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