Potential GobRAT File Discovery Via Grep
Detects the use of grep to discover specific files created by the GobRAT malware
Sigma rule (View on GitHub)
1title: Potential GobRAT File Discovery Via Grep
2id: e34cfa0c-0a50-4210-9cb3-5632d08eb041
3status: test
4description: Detects the use of grep to discover specific files created by the GobRAT malware
5references:
6 - https://blogs.jpcert.or.jp/en/2023/05/gobrat.html
7 - https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection
8 - https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection
9author: Joseliyo Sanchez, @Joseliyo_Jstnk
10date: 2023-06-02
11tags:
12 - attack.discovery
13 - attack.t1082
14logsource:
15 category: process_creation
16 product: linux
17detection:
18 selection:
19 Image|endswith: '/grep'
20 CommandLine|contains:
21 - 'apached'
22 - 'frpc'
23 - 'sshd.sh'
24 - 'zone.arm'
25 condition: selection
26falsepositives:
27 - Unknown
28level: high
References
-
JPCERT/CC has confirmed attacks that infected routers in Japan with malware around February 2023. This blog article explains the details of the attack confirmed by JPCERT/CC and GobRAT malware, which was used in the attack. ### Attack flow up to...
Read More -
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