Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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ET ATTACK_RESPONSE Koi Loader/Stealer Payload Inbound
ET ATTACK_RESPONSE PowerShell String Base64 Encoded Text.Encoding (ZXh0LkVuY29k) in DNS TXT Reponse
This rule detects attempts to exploit CVE-2024-30043, a vulnerability in Microsoft SharePoint's SPXmlDataSource that allows for XML External Entity (XXE) injection. The rule specifically looks for HTTP responses containing SharePoint XML data source declarations and a 'DataFile' attribute with a path that starts with 'file://', 'smb://', or '\\', indicating an attempt to fetch local or network files.
This rule detects attempts to exploit a buffer overflow vulnerability in the 'index' parameter of the '/goform/WifiWpsStart' endpoint on Tenda Wifi routers. The detection is triggered by HTTP POST requests to this specific URI containing 'index=' followed by a string of 100 or more characters, indicating an attempt to overflow the buffer. This vulnerability could lead to denial of service or arbitrary code execution.
Detect a system being shutdown or put into different boot mode
See what commands are being input into the device by other people, full credentials can be in the history
Cisco Local Accounts
Sigma
Find local accounts being created or modified as well as remote authentication configurations
Modifications to a config that will serve an adversary's impacts or persistence
Cisco Stage Data
Sigma
Various protocols maybe used to put data on the device for exfil or infil
Cisco Sniffing
Sigma
Show when a monitor or a span/rspan is setup or modified
Detects usage of the windows RPC library Encrypting File System Remote Protocol (MS-EFSRPC). Variations of this RPC are used within the attack refereed to as PetitPotam.
The usage of this RPC function should be rare if ever used at all.
Thus usage of this function is uncommon enough that any usage of this RPC function should warrant further investigation to determine if it is legitimate.
View surrounding logs (within a few minutes before and after) from the Source IP to. Logs from from the Source IP would include dce_rpc, smb_mapping, smb_files, rdp, ntlm, kerberos, etc..'
The usage of this RPC function should be rare if ever used at all.
Thus usage of this function is uncommon enough that any usage of this RPC function should warrant further investigation to determine if it is legitimate.
View surrounding logs (within a few minutes before and after) from the Source IP to. Logs from from the Source IP would include dce_rpc, smb_mapping, smb_files, rdp, ntlm, kerberos, etc..'
Detects the presence of default Cobalt Strike certificate in the HTTPS traffic
Identifies clients that may be performing DNS lookups associated with common currency mining pools.
DNS TOR Proxies
Sigma
Identifies IPs performing DNS lookups associated with common Tor proxies.
This rule detects HTTP GET requests for PNG files from github.com with a minimal set of HTTP headers. Specifically, it looks for requests where the total size of HTTP header names is less than 30 bytes and explicitly excludes common headers like 'user-agent', 'referer', 'accept', 'x-auth', and 'cookie'. This pattern could indicate an attempt to exfiltrate data or perform other covert communication using a simplified HTTP client, potentially to evade detection by security tools that expect full browser-like headers.
ET WEB_SPECIFIC_APPS Tenda SysRunCmd getui Parameter Buffer Overflow Attempt (CVE-2025-12622)
ET WEB_SPECIFIC_APPS IPFire urlfilter.cgi BE_NAME Parameter Command Injection Attempt (CVE-2025-34312)
ET WEB_SPECIFIC_APPS IPFire time.cgi UPDATE_VALUE Parameter Cross Site Scripting Attempt (CVE-2025-34308)
ET WEB_SPECIFIC_APPS Atlassian Confluence Server-Side Request Forgery (CVE-2021-26072)
ET WEB_SPECIFIC_APPS Kaseya VSA Authenticated SQL Injection in exportFldr (CVE-2021-30117)
ET WEB_SPECIFIC_APPS Tenda SafeMacFilter page Parameter Buffer Overflow Attempt (CVE-2025-12234)
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