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New Rule: Generic Chrome Extension Rule With A Widened Scope #4598

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merged 4 commits into from
Nov 28, 2023
Merged

New Rule: Generic Chrome Extension Rule With A Widened Scope #4598

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1287ff7
Modified rule to widen scope
joshnck Nov 27, 2023
ebd2e41
Update proc_creation_win_browsers_chromium_susp_load_extension.yml
joshnck Nov 27, 2023
ea8fe72
feat: update to the extension rule
nasbench Nov 28, 2023
b08f013
fix: minor
phantinuss Nov 28, 2023
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33 changes: 33 additions & 0 deletions rules/windows/process_creation/proc_creation_win_browsers_chromium_load_extension.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,33 @@
title: Chromium Browser Instance Executed With Custom Extension
id: 88d6e60c-759d-4ac1-a447-c0f1466c2d21
related:
- id: 27ba3207-dd30-4812-abbf-5d20c57d474e
type: similar
status: experimental
description: Detects a chromium based browser process with the 'load-extension' flag to start a instance with custom extension
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references:
- https://redcanary.com/blog/chromeloader/
- https://emkc.org/s/RJjuLa
- https://www.mandiant.com/resources/blog/lnk-between-browsers
author: Aedan Russell, frack113, X__Junior (Nextron Systems)
date: 2022/06/19
modified: 2023/11/28
tags:
- attack.persistence
- attack.t1176
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\brave.exe'
- '\chrome.exe'
- '\msedge.exe'
- '\opera.exe'
- '\vivaldi.exe'
CommandLine|contains: '--load-extension='
condition: selection
falsepositives:
- Usage of Chrome Extensions in testing tools such as BurpSuite will trigger this alert
level: medium
9 changes: 6 additions & 3 deletions rules/windows/process_creation/proc_creation_win_browsers_chromium_susp_load_extension.yml
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Original file line number Diff line number Diff line change
@@ -1,14 +1,17 @@
title: Suspicious Chromium Browser Instance Executed With Custom Extensions
title: Suspicious Chromium Browser Instance Executed With Custom Extension
id: 27ba3207-dd30-4812-abbf-5d20c57d474e
related:
- id: 88d6e60c-759d-4ac1-a447-c0f1466c2d21
type: similar
status: experimental
description: Detects a suspicious process spawning a Chromium based browser process with the 'load-extension' flag to start a instance with custom extensions
description: Detects a suspicious process spawning a Chromium based browser process with the 'load-extension' flag to start a instance with custom extension
phantinuss marked this conversation as resolved.
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references:
- https://redcanary.com/blog/chromeloader/
- https://emkc.org/s/RJjuLa
- https://www.mandiant.com/resources/blog/lnk-between-browsers
author: Aedan Russell, frack113, X__Junior (Nextron Systems)
date: 2022/06/19
modified: 2023/09/28
modified: 2023/11/28
tags:
- attack.persistence
- attack.t1176
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