nomit vyas
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694 detections
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Detects instances where 'Cursor.exe' initiates a process that attempts to download content from the internet using common command-line tools like cmd.exe, powershell.exe, curl.exe, wget.exe, certutil.exe, or bitsadmin.exe. This behavior can indicate malicious activity, such as malware downloading additional stages or tools.
This rule detects files matching known SHA256 hashes associated with the VoidLink malware framework. This is a high-fidelity indicator with a very low chance of false positives.
This rule detects the execution of a Python Proof-of-Concept (PoC) script named 'exp.py' followed by the execution of the 'su' binary within a 5-minute window on a Linux system. This correlation is indicative of an attempt to exploit CVE-2026-31431 (Copy Fail), which leverages AF_ALG sockets to overwrite the 'su' setuid binary in memory, aiming to achieve root privileges.
Detects the usage of 'wevtutil.exe' to clear critical Windows event logs (Application, Security, System, Windows PowerShell). This activity is often associated with defense evasion tactics used by adversaries, including ransomware like VECT, to remove forensic evidence.
This rule detects the execution of Python processes on Linux systems that include a specific cryptographic template string in their command line. This string, "authencesn(hmac(sha256),cbc(aes))", is indicative of a Proof-of-Concept (PoC) exploit related to CVE-2026-31431, also known as 'Copy Fail'. The detection targets Python binaries (python, python3, or versioned python3.x) and aims to identify attempts to leverage this vulnerability for suspicious cryptographic operations.
This rule detects attempts to mitigate the CVE-2026-31431 vulnerability by either unloading the 'algif_aead' kernel module using 'rmmod' or by configuring 'modprobe' to blackhole the 'algif_aead' module. This activity indicates a system administrator or automated tool is applying a known mitigation for a kernel vulnerability.
Detects anomalous file modification or deletion events targeting the SSH known_hosts file. This activity can be indicative of VECT ransomware, which zeroes out this file across compromised Linux and ESXi systems to suppress host-key warnings, enabling silent lateral movement via SCP and SSH.
This rule identifies "impossible travel" scenarios where a user logs in from two geographically distant locations within a short period (less than 2 hours). This can indicate a compromised account being used by an attacker, potentially leveraging VPNs or other proxy services to obscure their true location.
Detects the creation of the 'vector_notice.sh' script in the '/etc/profile.d/' directory. The VECT ransomware (Linux and ESXi variants) drops this shell script to display a ransom note to users upon shell login.
Detects the execution of bcdedit to configure the system boot into minimal safe mode. VECT ransomware uses this technique to evade security products on the next reboot.
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