Query: rule covering Detects suspicious activities as declared by Florian Roth in its 'Best Practice Auditd Configuration'. This includes the
Matching passage: Sigma rule: Detects suspicious activities as declared by Florian Roth in its 'Best Practice Auditd Configuration'. This includes the. Logsource: linux / auditd. Rule: title: Suspicious C2 Activities id: f7158a64-6204-4d6d-868a-6e6378b467e0 status: test description: 'Detects suspicious activities as declared by Florian Roth in its ''Best Practice Auditd Configuration''. This includes the detection of the following commands; wget, curl, base64, nc, netcat, ncat, ssh, socat, wireshark, rawshark, rdesktop, nmap. These commands match a few techniques from the tactics "Command and Control", including not exhaustively the following; Application Layer Protocol (T1071), Non-Application Layer Protocol (T1095), Data Encoding (T1132) ' references: - https://github.com/Neo23x0/auditd author: Marie Euler date: 2020-05-18 modified: 2021-11-27 tags: - attack.command-and-control logsource: product: linux service: auditd definition: 'Required auditd configuration: -w /usr/bin/wget -p x -k susp_activity -w /usr/bin/curl -p x -k susp_activity -w /usr/bin/base64 -p x -k susp_activity -w /bin/nc -p x -k susp_activity -w /bin/netcat -p x -k susp_activity -w /usr/bin/ncat -p x -k susp_activity -w /usr/bin/ss -p x -k susp_activity -w /usr/bin/netstat -p x -k susp_activity -w /usr/bin/ssh -p x -k susp_activity -w /usr/bin/scp -p x -k susp_activity -w /usr/bin/sftp -p x -k susp_activity -w /usr/bin/ftp -p x -k susp_activity -w /usr/bin/socat -p x -k susp_activity -w /usr/bin/wireshark -p x -k susp_activity -w /usr/bin/tshark -p x -k susp_activity -w /usr/bin/rawshark -p x -k susp_activity -w /usr/bin/rdesktop -p x -k susp_activity -w /usr/local/bin/rdesktop -p x -k susp_activity -w /usr/bin/wlfreerdp -p x -k susp_activity -w /usr/bin/xfreerdp -p x -k susp_activity -w /usr/local/bin/xfreerdp -p x -k susp_activity -w /usr/bin/nmap -p x -k susp_activity (via https://github.com/Neo23x0/auditd/blob/ddf2603dbc985f97538d102f13b4e4446b402bae/audit.rules#L336) ' detection: selection: key: susp_activity condition: selection falsepositives: - Admin or User activity level: medium
Near-miss passage: Sigma rule: Detect use of ie4uinit.exe to execute commands from a specially prepared ie4uinit.inf file from a directory other than t. Logsource: windows / process_creation. Rule: title: Ie4uinit Lolbin Use From Invalid Path id: d3bf399f-b0cf-4250-8bb4-dfc192ab81dc status: test description: Detect use of ie4uinit.exe to execute commands from a specially prepared ie4uinit.inf file from a directory other than the usual directories references: - https://lolbas-project.github.io/lolbas/Binaries/Ie4uinit/ - https://bohops.com/2018/03/10/leveraging-inf-sct-fetch-execute-techniques-for-bypass-evasion-persistence-part-2/ author: frack113 date: 2022-05-07 modified: 2022-05-16 tags: - attack.stealth - attack.t1218 logsource: product: windows category: process_creation detection: lolbin: - Image|endswith: \ie4uinit.exe - OriginalFileName: IE4UINIT.EXE filter_correct: CurrentDirectory: - c:\windows\system32\ - c:\windows\sysWOW64\ filter_missing: CurrentDirectory: null condition: lolbin and not 1 of filter_* falsepositives: - ViberPC updater calls this binary with the following commandline "ie4uinit.exe -ClearIconCache" level: medium