Security Software Discovery - Linux

 1title: Security Software Discovery - Linux
 2id: c9d8b7fd-78e4-44fe-88f6-599135d46d60
 3status: test
 4description: Detects usage of system utilities (only grep and egrep for now) to discover security software discovery
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1518.001/T1518.001.md
 7author: Daniil Yugoslavskiy, oscd.community
 8date: 2020/10/19
 9modified: 2022/11/27
10tags:
11    - attack.discovery
12    - attack.t1518.001
13logsource:
14    category: process_creation
15    product: linux
16detection:
17    selection:
18        Image|endswith:
19            # You can add more grep variations such as fgrep, rgrep...etc
20            - '/grep'
21            - '/egrep'
22        CommandLine|contains:
23            - 'nessusd'        # nessus vulnerability scanner
24            - 'td-agent'       # fluentd log shipper
25            - 'packetbeat'     # elastic network logger/shipper
26            - 'filebeat'       # elastic log file shipper
27            - 'auditbeat'      # elastic auditing agent/log shipper
28            - 'osqueryd'       # facebook osquery
29            - 'cbagentd'       # carbon black
30            - 'falcond'        # crowdstrike falcon
31    condition: selection
32falsepositives:
33    - Legitimate activities
34level: low