SigmaHQ Detections
@sigmaHQ12 followers122,429 downloads2,499 copies16 likes159,672 views
6,797 detections
Filters
Last updated
All Time
Detection languages
6,797
Categories
2,695
910
506
407
372
Platforms
5,313
505
263
203
164
Products / Services
2,050
1,570
475
423
316
MITRE Techniques
2,652
1,738
1,655
1,502
764
CVEs
19
19
19
16
10
Detects the usage of the `base64` utility on macOS to decode arbitrary base64-encoded text. This activity can be indicative of an adversary deobfuscating malicious content, such as scripts or payloads, that were previously encoded to evade detection.
This rule identifies execution traces indicative of the XCSSET macOS malware. XCSSET is known to spread via Xcode projects and maliciously modify applications. The rule looks for specific command-line patterns involving 'curl' to suspicious URLs, 'osacompile' and 'plutil' interacting with user and group containers, and 'zip' archiving data from user and group containers. These activities suggest potential command and control communication, persistence mechanisms, and data staging/exfiltration by the malware.
This rule detects attempts to clear logging or archive history on Cisco network devices. Adversaries may clear command history or logging to remove forensic evidence of their activities, which is a common defense evasion technique.
This rule detects various keywords associated with data transfer and staging activities on Cisco devices. These activities could indicate an adversary attempting to move data onto the device for further exfiltration or to move data off the device. The keywords include common protocols and commands like 'tftp', 'rcp', 'puts', 'copy', 'configure replace', and 'archive tar', which are often used for file transfers and configuration management on network devices.
Detects the presence of default Cobalt Strike certificate in the HTTPS traffic
This rule detects a 'Segmentation Fault' error message in Apache error logs, indicating a crashing Apache worker process. This type of event can be caused by software vulnerabilities, misconfigurations, or malicious activity aiming to disrupt service availability.
Detects the download of executable, script, archive, and document file types from hosts associated with dynamic DNS services. These services are often abused by adversaries for command and control or for hosting malicious content due to their ability to frequently change IP addresses, making them harder to track and block.
Detects network requests to '/pwndrop/' URI paths, which are indicative of communication with a PwnDrp web server. PwnDrp is a tool developed for red team testing and is also known to be used for malicious activities, typically for command and control or data exfiltration.
Detects path traversal exploitation attempts
This rule detects attempts to dump the NTDS.dit database to suspicious locations. It specifically looks for ESENT event ID 325 (New Database Created) where the data contains 'ntds.dit' and the path includes common suspicious directories such as Appdata, Desktop, Downloads, Perflogs, Temp, or Users\Public.
Page 483 of 680