frack113
020fc8061f
chore: Upgrade status level from `experimental` to `test` for rules that have not changed in 300 days --------- Signed-off-by: frack113 <62423083+frack113@users.noreply.github.com> Co-authored-by: nasbench <8741929+nasbench@users.noreply.github.com>
24 lines
815 B
YAML
24 lines
815 B
YAML
title: Remove Scheduled Cron Task/Job
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id: c2e234de-03a3-41e1-b39a-1e56dc17ba67
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status: test
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description: |
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Detects usage of the 'crontab' utility to remove the current crontab.
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This is a common occurrence where cryptocurrency miners compete against each other by removing traces of other miners to hijack the maximum amount of resources possible
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references:
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- https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html
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author: Nasreddine Bencherchali (Nextron Systems)
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date: 2022/09/15
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tags:
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- attack.defense_evasion
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logsource:
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category: process_creation
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product: linux
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detection:
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selection:
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Image|endswith: 'crontab'
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CommandLine|contains: ' -r'
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condition: selection
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falsepositives:
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- Unknown
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level: medium
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