HTTP Logging Disabled On IIS Server

calendar May 20, 2025 · attack.defense-evasion attack.persistence attack.t1562.002 attack.t1505.004  ·
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Detects changes to of the IIS server configuration in order to disable HTTP logging for successful requests.

Sigma rule (View on GitHub)

 1title: HTTP Logging Disabled On IIS Server
 2id: e8ebd53a-30c2-45bd-81bb-74befba07bdb
 3status: experimental
 4description: Detects changes to of the IIS server configuration in order to disable HTTP logging for successful requests.
 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.webserver/httplogging
 9author: frack113
10date: 2024-10-06
11tags:
12    - attack.defense-evasion
13    - attack.persistence
14    - attack.t1562.002
15    - attack.t1505.004
16logsource:
17    product: windows
18    service: iis-configuration
19detection:
20    selection:
21        EventID: 29
22        Configuration: '/system.webServer/httpLogging/@dontLog'
23        NewValue: 'true'
24    condition: selection
25falsepositives:
26    - Unknown
27level: high

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