Sigma Rules
3,707 rules found
Lazarus Group Activity
Detects different process execution behaviors as described in various threat reports on Lazarus group activity
Leviathan Registry Key Activity
Detects registry key used by Leviathan APT in Malaysian focused campaign
UNC2452 Process Creation Patterns
Detects a specific process creation patterns as seen used by UNC2452 and provided by Microsoft as Microsoft Defender ATP queries
UNC2452 PowerShell Pattern
Detects a specific PowerShell command line pattern used by the UNC2452 actors as mentioned in Microsoft and Symantec reports
Suspicious VBScript UN2452 Pattern
Detects suspicious inline VBScript keywords as used by UNC2452
Solarwinds SUPERNOVA Webshell Access
Detects access to SUPERNOVA webshell as described in Guidepoint report
TAIDOOR RAT DLL Load
Detects specific process characteristics of Chinese TAIDOOR RAT malware load
Winnti Malware HK University Campaign
Detects specific process characteristics of Winnti malware noticed in Dec/Jan 2020 in a campaign against Honk Kong universities
Winnti Pipemon Characteristics
Detects specific process characteristics of Winnti Pipemon malware reported by ESET
Antivirus PrinterNightmare CVE-2021-34527 Exploit Detection
Detects the suspicious file that is created from PoC code against Windows Print Spooler Remote Code Execution Vulnerability CVE-2021-34527 (PrinterNightmare), CVE-2021-1675 .
Potential PrintNightmare Exploitation Attempt
Detect DLL deletions from Spooler Service driver folder. This might be a potential exploitation attempt of CVE-2021-1675
CVE-2021-1675 Print Spooler Exploitation Filename Pattern
Detects the default filename used in PoC code against print spooler vulnerability CVE-2021-1675
Windows Spooler Service Suspicious Binary Load
Detect DLL Load from Spooler Service backup folder. This behavior has been observed during the exploitation of the Print Spooler Vulnerability CVE-2021-1675 and CVE-2021-34527 (PrinterNightmare).
PrinterNightmare Mimikatz Driver Name
Detects static QMS 810 and mimikatz driver name used by Mimikatz as exploited in CVE-2021-1675 and CVE-2021-34527
Possible CVE-2021-1675 Print Spooler Exploitation
Detects events of driver load errors in print service logs that could be a sign of successful exploitation attempts of print spooler vulnerability CVE-2021-1675
CVE-2021-1675 Print Spooler Exploitation
Detects driver load events print service operational log that are a sign of successful exploitation attempts against print spooler vulnerability CVE-2021-1675
CVE-2021-1675 Print Spooler Exploitation IPC Access
Detects remote printer driver load from Detailed File Share in Security logs that are a sign of successful exploitation attempts against print spooler vulnerability CVE-2021-1675 and CVE-2021-34527
Possible PrintNightmare Print Driver Install - CVE-2021-1675
Detects the remote installation of a print driver which is possible indication of the exploitation of PrintNightmare (CVE-2021-1675). The occurrence of print drivers being installed remotely via RPC functions should be rare, as print drivers are normally installed locally and or through group policy.
Arcadyan Router Exploitations
Detects exploitation of vulnerabilities in Arcadyan routers as reported in CVE-2021-20090 and CVE-2021-20091.
Oracle WebLogic Exploit CVE-2021-2109
Detects the exploitation of the WebLogic server vulnerability described in CVE-2021-2109
CVE-2021-21972 VSphere Exploitation
Detects the exploitation of VSphere Remote Code Execution vulnerability as described in CVE-2021-21972
CVE-2021-21978 Exploitation Attempt
Detects the exploitation of the VMware View Planner vulnerability described in CVE-2021-21978
VMware vCenter Server File Upload CVE-2021-22005
Detects exploitation attempts using file upload vulnerability CVE-2021-22005 in the VMWare vCenter Server.
Fortinet CVE-2021-22123 Exploitation
Detects CVE-2021-22123 exploitation attempt against Fortinet WAFs
Pulse Connect Secure RCE Attack CVE-2021-22893
This rule detects exploitation attempts using Pulse Connect Secure(PCS) vulnerability (CVE-2021-22893)
Potential Atlassian Confluence CVE-2021-26084 Exploitation Attempt
Detects spawning of suspicious child processes by Atlassian Confluence server which may indicate successful exploitation of CVE-2021-26084
Potential CVE-2021-26084 Exploitation Attempt
Detects potential exploitation of CVE-2021-260841 a Confluence RCE using OGNL injection
Exploitation of CVE-2021-26814 in Wazuh
Detects the exploitation of the Wazuh RCE vulnerability described in CVE-2021-26814
Potential CVE-2021-26857 Exploitation Attempt
Detects possible successful exploitation for vulnerability described in CVE-2021-26857 by looking for | abnormal subprocesses spawning by Exchange Server's Unified Messaging service
CVE-2021-26858 Exchange Exploitation
Detects possible successful exploitation for vulnerability described in CVE-2021-26858 by looking for creation of non-standard files on disk by Exchange Server’s Unified Messaging service which could indicate dropping web shells or other malicious content
ProxyLogon Reset Virtual Directories Based On IIS Log
When exploiting this vulnerability with CVE-2021-26858, an SSRF attack is used to manipulate virtual directories
Potential CVE-2021-27905 Exploitation Attempt
Detects exploitation attempt of the CVE-2021-27905 which affects all Apache Solr versions prior to and including 8.8.1.
Exchange Exploitation CVE-2021-28480
Detects successful exploitation of Exchange vulnerability as reported in CVE-2021-28480
CVE-2021-33766 Exchange ProxyToken Exploitation
Detects the exploitation of Microsoft Exchange ProxyToken vulnerability as described in CVE-2021-33766
CVE-2021-31979 CVE-2021-33771 Exploits by Sourgum
Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum
CVE-2021-31979 CVE-2021-33771 Exploits
Detects patterns as noticed in exploitation of Windows CVE-2021-31979 CVE-2021-33771 vulnerability and DevilsTongue malware by threat group Sourgum
Serv-U Exploitation CVE-2021-35211 by DEV-0322
Detects patterns as noticed in exploitation of Serv-U CVE-2021-35211 vulnerability by threat group DEV-0322
OMIGOD HTTP No Authentication RCE - CVE-2021-38647
Detects the exploitation of OMIGOD (CVE-2021-38647) which allows remote execute (RCE) commands as root with just a single unauthenticated HTTP request. Verify, successful, exploitation by viewing the HTTP client (request) body to see what was passed to the server (using PCAP). Within the client body is where the code execution would occur. Additionally, check the endpoint logs to see if suspicious commands or activity occurred within the timeframe of this HTTP request.
PwnKit Local Privilege Escalation
Detects potential PwnKit exploitation CVE-2021-4034 in auth logs
Suspicious Word Cab File Write CVE-2021-40444
Detects file creation patterns noticeable during the exploitation of CVE-2021-40444
Potential CVE-2021-40444 Exploitation Attempt
Detects potential exploitation of CVE-2021-40444 via suspicious process patterns seen in in-the-wild exploitations
Potential Exploitation Attempt From Office Application
Detects Office applications executing a child process that includes directory traversal patterns. This could be an attempt to exploit CVE-2022-30190 (MSDT RCE) or CVE-2021-40444 (MSHTML RCE)
ADSelfService Exploitation
Detects suspicious access to URLs that was noticed in cases in which attackers exploitated the ADSelfService vulnerability CVE-2021-40539
CVE-2021-40539 Zoho ManageEngine ADSelfService Plus Exploit
Detects an authentication bypass vulnerability affecting the REST API URLs in ADSelfService Plus (CVE-2021-40539).
InstallerFileTakeOver LPE CVE-2021-41379 File Create Event
Detects signs of the exploitation of LPE CVE-2021-41379 that include an msiexec process that creates an elevation_service.exe file
Potential CVE-2021-41379 Exploitation Attempt
Detects potential exploitation attempts of CVE-2021-41379 (InstallerFileTakeOver), a local privilege escalation (LPE) vulnerability where the attacker spawns a "cmd.exe" process as a child of Microsoft Edge elevation service "elevation_service" with "LOCAL_SYSTEM" rights
LPE InstallerFileTakeOver PoC CVE-2021-41379
Detects PoC tool used to exploit LPE vulnerability CVE-2021-41379
CVE-2021-41773 Exploitation Attempt
Detects exploitation of flaw in path normalization in Apache HTTP server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the expected document root. If files outside of the document root are not protected by "require all denied" these requests can succeed. Additionally this flaw could leak the source of interpreted files like CGI scripts. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions.