Potential GobRAT File Discovery Via Grep

Title: Potential GobRAT File Discovery Via Grep
Status: test
Description:Detects the use of grep to discover specific files created by the GobRAT malware
References:
  -https://blogs.jpcert.or.jp/en/2023/05/gobrat.html
  -https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection
  -https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection
Author: Joseliyo Sanchez, @Joseliyo_Jstnk
Date: 2023-06-02
modified:None
Tags:

• -'attack.discovery'
• -'attack.t1082'

Logsource:

• category: process_creation
• product: linux

Detection:
  selection:
    Image|endswith: '/grep'
    CommandLine|contains:
      -'apached'
      -'frpc'
      -'sshd.sh'
      -'zone.arm'

  condition:selection
Falsepositives:
  -Unknown
Level: high