diff --git a/detections/endpoint/detect_autosuid_post_exploitation_tool.yml b/detections/endpoint/detect_autosuid_post_exploitation_tool.yml deleted file mode 100644 index 32a52632b2..0000000000 --- a/detections/endpoint/detect_autosuid_post_exploitation_tool.yml +++ /dev/null @@ -1,55 +0,0 @@ -name: Detect AutoSUID post exploitation tool -id: 0edd5862-56c9-11ec-b990-acde48001122 -version: 1 -date: '2021-12-06' -author: Rod Soto -type: TTP -datamodel: -- Endpoint -description: This search, detects Linux post exploitation tool AutoSUID, which is - an a tool that searches for SUID executables files in order to escalate privileges. -search: ' `sysmon_linux` CommandLine="find / -xdev -user root ( -perm -4000 -o -perm - -2000 -o -perm -6000 )" | stats count by Computer process process_current_directory - process_path | `detect_autosuid_post_exploitation_tool_filter`' -how_to_implement: This detection search is based on Splunk add-on for Microsoft Sysmon-Linux. - Need to install this add-on to parse fields correctly and execute detection search. -known_false_positives: Unless an administrator is using these commands to troubleshoot - or audit a system, the execution of these commands should be monitored. -references: -- https://attack.mitre.org/matrices/enterprise/linux/ -- https://github.com/IvanGlinkin/AutoSUID -tags: - analytic_story: - - Linux Post-Exploitation - automated_detection_testing: passed - confidence: 90 - context: - - Source: Endpoint - - Stage: Discovery - dataset: - - https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/autoSUID.txt - impact: 90 - kill_chain_phases: - - Exploitation - - Privilege Escalation - message: AutoSUID post exploitation tool detected - mitre_attack_id: - - T1069 - - T1222 - observable: - - name: Computer - type: Endpoint - role: - - Victim - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - required_fields: - - _time - - Computer - - process - - process_path - - process_current_directory - risk_score: 81 - security_domain: endpoint diff --git a/detections/endpoint/detect_linenum_execution.yml b/detections/endpoint/detect_linenum_execution.yml deleted file mode 100644 index cea9fb1517..0000000000 --- a/detections/endpoint/detect_linenum_execution.yml +++ /dev/null @@ -1,63 +0,0 @@ -name: Detect LinEnum execution -id: 570e5278-5479-11ec-89c8-acde48001122 -version: 1 -date: '2021-12-03' -author: Rod Soto -type: TTP -datamodel: -- Endpoint -description: LinEnum is a bash script that performs discovery commands for accounts, - processes, kernel version, applications, services, and uses the information from - these commands to present operator with ways of escalating privileges or further - exploitation of targeted host. -search: ' `sysmon_linux` CommandLine="grep -w aria2c\\|arp\\|ash\\|awk\\|base64\\|bash\\|busybox\\|cat\\|chmod\\|chown\\|cp\\|csh\\|curl\\|cut\\|dash\\|date\\|dd\\|diff\\|dmsetup\\|docker\\|ed\\|emacs\\|env\\|expand\\|expect\\|file\\|find\\|flock\\|fmt\\|fold\\|ftp\\|gawk\\|gdb\\|gimp\\|git\\|grep\\|head\\|ht\\|iftop\\|ionice\\|ip$\\|irb\\|jjs\\|jq\\|jrunscript\\|ksh\\|ld.so\\|ldconfig\\|less\\|logsave\\|lua\\|make\\|man\\|mawk\\|more\\|mv\\|mysql\\|nano\\|nawk\\|nc\\|netcat\\|nice\\|nl\\|nmap\\|node\\|od\\|openssl\\|perl\\|pg\\|php\\|pic\\|pico\\|python\\|readelf\\|rlwrap\\|rpm\\|rpmquery\\|rsync\\|ruby\\|run-parts\\|rvim\\|scp\\|script\\|sed\\|setarch\\|sftp\\|sh\\|shuf\\|socat\\|sort\\|sqlite3\\|ssh$\\|start-stop-daemon\\|stdbuf\\|strace\\|systemctl\\|tail\\|tar\\|taskset\\|tclsh\\|tee\\|telnet\\|tftp\\|time\\|timeout\\|ul\\|unexpand\\|uniq\\|unshare\\|vi\\|vim\\|watch\\|wget\\|wish\\|xargs\\|xxd\\|zip\\|zsh" - | stats count by Computer CommandLine user process_exec process_current_directory - | `detect_linenum_execution_filter` ' -how_to_implement: This detection search is based on Splunk add-on for Microsoft Sysmon-Linux. - Need to install this add-on to parse fields correctly and execute detection search. -known_false_positives: Very rare to perform such an extensive grep on a system, however - certain monitoring tools can produce similar results. It is important if monitoring - tools are in place to verify what is the actual process directory of execution. -references: -- https://github.com/rebootuser/LinEnum -- https://book.hacktricks.xyz/linux-unix/linux-privilege-escalation-checklist -tags: - analytic_story: - - Linux Post-Exploitation - automated_detection_testing: passed - confidence: 90 - context: - - Source: endpoint - - Stage: discovery - dataset: - - https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/LinuxEnumd.txt - impact: 50 - kill_chain_phases: - - Privilege Escalation - message: LinEnum post exploitation tool detected - mitre_attack_id: - - T1087 - - T1069 - - T1083 - - T1057 - - T1518 - - T1082 - - T1016 - - T1033 - observable: - - name: Computer - type: Endpoint - role: - - Victim - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - required_fields: - - _time - - CommandLine - - user - - process_exec - - process_current_directory - risk_score: 45 - security_domain: endpoint diff --git a/detections/endpoint/detect_linpeas_execution.yml b/detections/endpoint/detect_linpeas_execution.yml deleted file mode 100644 index 527ab77df7..0000000000 --- a/detections/endpoint/detect_linpeas_execution.yml +++ /dev/null @@ -1,63 +0,0 @@ -name: Detect LinPeas Execution -id: 4ea6fa10-547c-11ec-a4f9-acde48001122 -version: 1 -date: '2021-12-03' -author: Rod Soto -type: TTP -datamodel: -- Endpoint -description: Linux local Privilege Escalation Awesome Script (linPEAS) is a script - that searches for possible paths to escalate privileges. -search: ' `sysmon_linux` CommandLine!=null parent_process_exec=sudo OR parent_process_exec=bash - OR CommandLine="cve-list" | stats count by Computer CommandLine user parent_process_exec - process_path | `detect_linpeas_execution_filter`' -how_to_implement: This detection search is based on Splunk add-on for Microsoft Sysmon-Linux. - Need to install this add-on to parse fields correctly and execute detection search. -known_false_positives: This search may produce false positives as it will display - many sudo executed processess however, the cve-list within the command line it is - a clear indicator, operator is searching for local vulnerabilites. -references: -- https://book.hacktricks.xyz/linux-unix/linux-privilege-escalation-checklist -- https://github.com/carlospolop/PEASS-ng/tree/master/linPEAS -- https://attack.mitre.org/matrices/enterprise/linux/ -tags: - analytic_story: - - Linux Post-Exploitation - confidence: 100 - context: - - Source: endpoint - - Stage: discovery - dataset: - - https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/linpeasdataset.txt - impact: 90 - kill_chain_phases: - - Exploitation - - Privilege Escalation - message: LinPEAS post exploitation tool detected - mitre_attack_id: - - T1082 - - T1083 - - T1033 - - T1087 - - T1046 - - T1057 - - T1518 - - T1033 - observable: - - name: Computer - type: Endpoint - role: - - Victim - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - required_fields: - - _time - - Computer - - CommandLine - - user - - parent_process_exec - - process_path - risk_score: 90 - security_domain: endpoint diff --git a/detections/endpoint/detect_linux_exploit_suggester_execution.yml b/detections/endpoint/detect_linux_exploit_suggester_execution.yml deleted file mode 100644 index 44c9b56699..0000000000 --- a/detections/endpoint/detect_linux_exploit_suggester_execution.yml +++ /dev/null @@ -1,57 +0,0 @@ -name: Detect Linux Exploit Suggester Execution -id: a4f34d5c-547b-11ec-ba88-acde48001122 -version: 1 -date: '2021-12-03' -author: Rod Soto -type: TTP -datamodel: -- Endpoint -description: This search detects Linux Exploit Suggester tool execution. This is a - tool that searches for vulnerabilities based on Kernel and Distribution versions - then queries public exploit databases. -search: ' `sysmon_linux` CommandLine="cvelist-file:" OR CommandLine="uname -a" OR - CommandLine="*exploit*" OR CommandLine="*exploit-db*" | stats count by CommandLine,user,Computer,action,signature, - process_name | `detect_linux_exploit_suggester_execution_filter`' -how_to_implement: This detection search is based on Splunk add-on for Microsoft Sysmon-Linux. - Need to install this add-on to parse fields correctly and execute detection search. -known_false_positives: Monitoring tools may produce similar commands although the - presence of "exploit-db" is very unusual. -references: -- https://book.hacktricks.xyz/linux-unix/linux-privilege-escalation-checklist -- https://attack.mitre.org/matrices/enterprise/linux/ -tags: - analytic_story: - - Linux Post-Exploitation - automated_detection_testing: passed - confidence: 100 - context: - - Source: endpoint - - Stage: discovery - dataset: - - https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/linuxexploitsuggesterdatasets.txt - impact: 90 - kill_chain_phases: - - Exploitation - - Privilege Escalation - message: Linux Exploit Suggester post exploitation tool detected. - mitre_attack_id: - - T1087 - - T1083 - - T1069 - - T1057 - - T1518 - - T1082 - observable: - - name: Computer - type: Endpoint - role: - - Victim - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - required_fields: - - _time - - CommandLine - risk_score: 90 - security_domain: endpoint diff --git a/detections/endpoint/detect_mimipenguin.yml b/detections/endpoint/detect_mimipenguin.yml deleted file mode 100644 index 50dcd97758..0000000000 --- a/detections/endpoint/detect_mimipenguin.yml +++ /dev/null @@ -1,54 +0,0 @@ -name: Detect MimiPenguin -id: 1ad20afa-547b-11ec-b4e7-acde48001122 -version: 1 -date: '2021-12-03' -author: Rod Soto -type: TTP -datamodel: -- Endpoint -description: MimiPenguin is a tool that dumps login passwords from current linux destop - users. This search detects execution of this tool. -search: ' `sysmon_linux` CommandLine="strings -e /etc/apache2/apache2.conf" OR CommandLine="strings - -e /etc/ssh/sshd_config" OR CommandLine="strings -e /etc/shadow" | stats count - by Computer parent_process process_current_directory user CommandLine | `detect_mimipenguin_filter`' -how_to_implement: This detection search is based on Splunk add-on for Microsoft Sysmon-Linux. - Need to install this add-on to parse fields correctly and execute detection search. -known_false_positives: Some of these commands may be executed by sysadmin however - not in the proximity and frequency, specially if querying for tools are that knonwn - not to be installed at target system. -references: -- https://github.com/huntergregal/mimipenguin -- https://attack.mitre.org/matrices/enterprise/linux/ -tags: - analytic_story: - - Linux Post-Exploitation - automated_detection_testing: passed - confidence: 70 - context: - - Source: endpoint - - Stage: discovery - dataset: - - https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/mimipenguin.txt - impact: 50 - kill_chain_phases: - - Privilege Escalation - message: MimiPenguin post exploitation tool detected - mitre_attack_id: - - T1552 - observable: - - name: Computer - type: Endpoint - role: - - Victim - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - required_fields: - - _time - - user - - Computer - - parent_process - - process_current_directory - risk_score: 35 - security_domain: endpoint diff --git a/macros/sysmon_linux.yml b/macros/sysmon_linux.yml deleted file mode 100644 index 7482f5a592..0000000000 --- a/macros/sysmon_linux.yml +++ /dev/null @@ -1,4 +0,0 @@ -definition: source=Syslog:Linux-Sysmon/Operational -description: customer specific splunk configurations(eg- index, source, sourcetype). - Replace the macro definition with configurations for your Splunk Environmnent. -name: sysmon_linux diff --git a/stories/linux_post_exploitation.yml b/stories/linux_post_exploitation.yml deleted file mode 100644 index 9ca9a638bb..0000000000 --- a/stories/linux_post_exploitation.yml +++ /dev/null @@ -1,20 +0,0 @@ -name: Linux Post-Exploitation -id: d310ccfe-5477-11ec-ad05-acde48001122 -version: 1 -date: '2021-12-03' -author: Rod Soto -description: This analytic story detects popular Linux post exploitation tools such as autoSUID, LinEnum, LinPEAS, Linux Exploit Suggesters, MimiPenguin -narrative: These tools allow operators find possible exploits or paths for privilege escalation based on SUID binaries, user permissions, kernel version and distro version. -references: -- https://attack.mitre.org/matrices/enterprise/linux/ -tags: - analytic_story: - - Linux Post-Exploitation - category: - - Adversary Tactics - - Privilege Escalation - product: - - Splunk Enterprise - - Splunk Enterprise Security - - Splunk Cloud - usecase: Security Monitoring diff --git a/tests/endpoint/detect_autosuid_post_exploitation_tool.test.yml b/tests/endpoint/detect_autosuid_post_exploitation_tool.test.yml deleted file mode 100644 index 29c16b458d..0000000000 --- a/tests/endpoint/detect_autosuid_post_exploitation_tool.test.yml +++ /dev/null @@ -1,12 +0,0 @@ -name: Detect AutoSUID post exploitation tool Unit Test -tests: -- name: Detect AutoSUID post exploitation tool - file: endpoint/detect_autosuid_post_exploitation_tool.yml - pass_condition: '| stats count | where count > 0' - earliest_time: '-24h' - latest_time: 'now' - attack_data: - - file_name: autoSUID.txt - data: https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/autoSUID.txt - source: "Syslog:Linux-Sysmon/Operational" - sourcetype: "sysmon_linux" diff --git a/tests/endpoint/detect_linenum_execution.test.yml b/tests/endpoint/detect_linenum_execution.test.yml deleted file mode 100644 index 85d7de99da..0000000000 --- a/tests/endpoint/detect_linenum_execution.test.yml +++ /dev/null @@ -1,12 +0,0 @@ -name: Detect LinEnum execution unit Test -tests: -- name: Detect LinEnum execution - file: endpoint/detect_linenum_execution.yml - pass_condition: '| stats count | where count > 0' - earliest_time: '-24h' - latest_time: 'now' - attack_data: - - file_name: LinuxEnumd.txt - data: https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/LinuxEnumd.txt - source: "Syslog:Linux-Sysmon/Operational" - sourcetype: "sysmon_linux" diff --git a/tests/endpoint/detect_linpeas_execution.test.yml b/tests/endpoint/detect_linpeas_execution.test.yml deleted file mode 100644 index 1e7397a056..0000000000 --- a/tests/endpoint/detect_linpeas_execution.test.yml +++ /dev/null @@ -1,12 +0,0 @@ -name: Detect LinPeas Execution Unit Test -tests: -- name: Detect LinPeas Execution - file: endpoint/detect_linpeas_execution.yml - pass_condition: '| stats count | where count > 0' - earliest_time: '-24h' - latest_time: 'now' - attack_data: - - file_name: linpeasdataset.txt - data: https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/linpeasdataset.txt - source: "Syslog:Linux-Sysmon/Operational" - sourcetype: "sysmon_linux" diff --git a/tests/endpoint/detect_linux_exploit_suggester_execution.test.yml b/tests/endpoint/detect_linux_exploit_suggester_execution.test.yml deleted file mode 100644 index 1efcd32d23..0000000000 --- a/tests/endpoint/detect_linux_exploit_suggester_execution.test.yml +++ /dev/null @@ -1,12 +0,0 @@ -name: Detect Linux Exploit Suggester Execution Unit Test -tests: -- name: Detect Linux Exploit Suggester Execution - file: endpoint/detect_linux_exploit_suggester_execution.yml - pass_condition: '| stats count | where count > 0' - earliest_time: '-24h' - latest_time: 'now' - attack_data: - - file_name: linuxexploitsuggesterdatasets.txt - data: https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/linuxexploitsuggesterdatasets.txt - source: "Syslog:Linux-Sysmon/Operational" - sourcetype: "sysmon_linux" diff --git a/tests/endpoint/detect_mimipenguin.test.yml b/tests/endpoint/detect_mimipenguin.test.yml deleted file mode 100644 index a2fff212b5..0000000000 --- a/tests/endpoint/detect_mimipenguin.test.yml +++ /dev/null @@ -1,12 +0,0 @@ -name: Detect MimiPenguin Unit Test -tests: -- name: Detect MimiPenguin - file: endpoint/detect_mimipenguin.yml - pass_condition: '| stats count | where count > 0' - earliest_time: '-24h' - latest_time: 'now' - attack_data: - - file_name: mimipenguin.txt - data: https://github.com/splunk/attack_data/raw/master/datasets/suspicious_behaviour/linux_post_exploitation/mimipenguin.txt - source: "Syslog:Linux-Sysmon/Operational" - sourcetype: "sysmon_linux"