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Added the string corresponding to "{"alg":" since some token headers start with this #5012

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merged 3 commits into from
Oct 6, 2024
Merged

Added the string corresponding to "{"alg":" since some token headers start with this #5012

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d53449e
Added the string corresponding to "{"alg":" since some token headers …
ionsor Sep 18, 2024
2d8a4dd
Update proc_creation_win_susp_office_token_search.yml
nasbench Oct 6, 2024
e98b4dd
update title and filename to fit the logic
nasbench Oct 6, 2024
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11 changes: 9 additions & 2 deletions rules/windows/process_creation/proc_creation_win_susp_office_token_search.yml
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Original file line number Diff line number Diff line change
@@ -1,11 +1,14 @@
title: Suspicious Office Token Search Via CLI
title: Potentially Suspicious Office Token Search Via CLI
id: 6d3a3952-6530-44a3-8554-cf17c116c615
status: test
description: Detects possible search for office tokens via CLI by looking for the string "eyJ0eX". This string is used as an anchor to look for the start of the JWT token used by office and similar apps.
description: |
Detects possible search for office tokens via CLI by looking for the string "eyJ0eX".
This string is used as an anchor to look for the start of the JWT token used by office and similar apps.
references:
- https://mrd0x.com/stealing-tokens-from-office-applications/
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-10-25
modified: 2024-10-06
tags:
- attack.credential-access
- attack.t1528
Expand All @@ -16,9 +19,13 @@ detection:
selection:
CommandLine|contains:
- 'eyJ0eXAiOi' # {"typ":
- 'eyJhbGciOi' # {"alg":
- ' eyJ0eX'
- ' "eyJ0eX"'
- " 'eyJ0eX'"
- ' eyJhbG'
- ' "eyJhbG"'
- " 'eyJhbG'"
condition: selection
falsepositives:
- Unknown
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