Uncommon Network Connection Initiated By Certutil.EXE
Detects a network connection initiated by the certutil.exe utility. Attackers can abuse the utility in order to download malware or additional payloads.
Detection logic
selection
Image|endswith: \certutil.exe
Initiated: "true"
DestinationPort:
- 80
- 135
- 443
- 445Condition
selectionRaw YAML
title: Uncommon Network Connection Initiated By Certutil.EXE
id: 0dba975d-a193-4ed1-a067-424df57570d1
status: test
description: |
Detects a network connection initiated by the certutil.exe utility.
Attackers can abuse the utility in order to download malware or additional payloads.
references:
- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/certutil
author: frack113, Florian Roth (Nextron Systems)
date: 2022-09-02
modified: 2024-05-31
tags:
- attack.command-and-control
- attack.t1105
logsource:
category: network_connection
product: windows
detection:
selection:
Image|endswith: '\certutil.exe'
Initiated: 'true'
DestinationPort:
- 80
- 135
- 443
- 445
condition: selection
falsepositives:
- Unknown
level: highFalse positives
- Unknown
References
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