Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,457 downloads7,054 copies47 likes38,395 views
11,679 detections
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Detects anomalous, high-volume npm package publication patterns from a single user account within a 5-minute window. This behavior is indicative of automated worm propagation or supply chain attacks using compromised developer tokens, specifically identified by high-frequency 'publish' events.
Detects unauthorized npm package publication events triggered by specific compromised maintainer accounts (czirker, llxlr) associated with the Miasma/Mini Shai-Hulud supply chain attack campaign, specifically targeting LeoPlatform or Verana Blockchain related packages.
Detects the execution of script interpreters (mshta, wscript, cscript) or PowerShell initiated by Microsoft Office applications (Word, Excel, PowerPoint, Outlook). This pattern is a common indicator of malicious macro or embedded script execution, often used to deliver secondary payloads.
Detects the creation of executable or script files within the Windows Startup folder where the parent process is WinRAR.exe. This activity is a common indicator of an adversary leveraging a self-extracting archive or malicious file extraction to achieve persistence by placing a payload in the user's startup directory.
Detects the execution of potentially suspicious cleanup and maintenance commands (e.g., clearing history, changing permissions, removing files) on Linux systems that are often associated with post-exploitation activity or evidence removal. The rule monitors for these patterns specifically when initiated by commands involving common suspicious file paths like 'isp.sh', 'lambsys', or '/var/tmp/.xlamb'.
Detects a sequence of suspicious activities characteristic of an SSH-based worm. The rule correlates non-standard processes reading SSH private keys, the presence of known cryptominer components (lambsys, procq, isp.sh), and subsequent SSH network fan-out activity from the same host, indicating lateral movement.
This rule detects attempts to disable, stop, or tamper with security-critical Linux system services and configurations. This includes stopping AppArmor, disabling firewalls (iptables, nftables, ufw), disabling SELinux, and modifying file attributes with 'chattr' to potentially hinder security monitoring or unauthorized file modifications.
This rule detects potentially malicious command-line arguments used with common Linux utilities. It monitors for: the use of 'unshare' for namespace manipulation often used for privilege escalation or container escapes, the 'ip xfrm' command for configuring IPsec policies, and the loading of kernel modules ('modprobe'/'insmod') with suspicious parameters ('esp4', 'esp6', 'rxrpc') which could indicate the installation of malicious rootkits or kernel-level backdoors.
This rule detects the execution of common scripting interpreters (PowerShell, WScript, CScript) that include command-line arguments referencing major cloud storage providers and file-hosting services. This behavior is frequently associated with data exfiltration or the staging of malicious payloads using legitimate web services.
Detects the execution of PowerShell commands that query system hardware and environment configurations often used by malware for sandbox detection, virtualization identification, or anti-analysis checks. The rule looks for queries related to VM guest tools (VMware, VirtualBox), BIOS/BaseBoard information, CPU core counts, total memory, and environment variables related to sandbox artifacts.
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