Sigma rule: WinSock2 Autorun Keys Modification

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-e9e518d7ea96, updated 2023-08-17T00:00:00.000Z.

Rule

Title
WinSock2 Autorun Keys Modification
Status
test
Level
medium
Author
Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)
Date
2019-10-25
Modified
2023-08-17
File
rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_winsock2.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects modification of autostart extensibility point (ASEP) in registry.

Log source

product
windows
category
registry_set

Detection

winsock_parameters_base:
    TargetObject|contains: '\System\CurrentControlSet\Services\WinSock2\Parameters'
winsock_parameters:
    TargetObject|contains:
        - '\Protocol_Catalog9\Catalog_Entries'
        - '\NameSpace_Catalog5\Catalog_Entries'
filter:
    - Details: '(Empty)'
    - Image: 'C:\Windows\System32\MsiExec.exe'
    - Image: 'C:\Windows\syswow64\MsiExec.exe'
condition: winsock_parameters_base and winsock_parameters and not filter

False positives (as the rule lists them)

  • Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason
  • Legitimate administrator sets up autorun keys for legitimate reason

Tags

  • attack.privilege-escalation
  • attack.persistence
  • attack.t1547.001

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_winsock2.yml

Sources and licences

  • SigmaHQ

    "WinSock2 Autorun Keys Modification" by Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_winsock2.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: WinSock2 Autorun Keys Modification",
entity page, dataset version ref-e9e518d7ea96, updated 2023-08-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/d6c2ce7e-afb5-4337-9ca4-4b5254ed0565 (accessed 2026-11-03).
Underlying source: SigmaHQ rule d6c2ce7e-afb5-4337-9ca4-4b5254ed0565, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.