Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,457 downloads7,048 copies47 likes38,318 views
11,679 detections
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Detects HTTP traffic where the Host header contains a decimal-encoded IP address, which is a technique often used in stager evasion and obfuscation (notably associated with 'ClickFix' or similar browser-based malvertising campaigns) to bypass domain-based filtering or reputation systems.
Detects outbound network requests to known infrastructure associated with the ClickFix Traffic Direction System (TDS), specifically targeting domains 'fsputnik.com' and 'uasputnik.com'. The rules monitor for requests to specific lure pages, tracker files, and established IP connections used by this malicious campaign to deliver fraudulent prompts or lures to victims.
Detects attempts to bypass the Antimalware Scan Interface (AMSI) in PowerShell by using reflection to modify internal AMSI-related structures and memory flags (e.g., AmsiUtils, amsiInitFailed). This technique involves manipulating system objects to neutralize AMSI's ability to inspect malicious script content.
This rule detects artifacts and command-line patterns associated with Impacket utility suite modules, specifically wmiexec.py, smbexec.py, and secretsdump.py. These tools are commonly used by adversaries for remote command execution, lateral movement, and dumping of sensitive domain or system credentials.
Detects the suspicious execution of common Windows system binaries (LOLBAS) often used for proxying malicious code execution or deobfuscating payloads. This includes regsvr32.exe for remote scriptlet execution, mshta.exe for remote HTA execution, rundll32.exe for JavaScript or DLL function execution, and certutil.exe for decoding or retrieving remote files.
This rule detects potential Kerberoasting activity by monitoring Kerberos TGS requests (Event ID 4769) that use RC4 encryption (0x17 or 17). It identifies accounts requesting TGS tickets for a large number of unique Service Principal Names (SPNs), excluding requests for host-based services (ending in $). High volumes of such requests from a single user are indicative of an attempt to gather service tickets for offline password cracking.
This rule detects potential command-and-control (C2) activity by correlating the creation of known Cobalt Strike or Sliver framework named pipes with subsequent repeated HTTP/S network beaconing from the same process or host. The rule identifies processes establishing suspicious named pipes, then looks for persistent network connections to standard web ports (80, 443) within a 30-minute window, flagging instances where significant beaconing count is observed.
Detects the execution of Nova ransomware (formerly RALord) by monitoring for its specific modular command-line interface arguments, which include file encryption commands, ransom note deployment, and specific ransom note filenames. The rule monitors process creation events for strings like 'encrypt-all', 'encrypt-path', 'readme-add', '--workers', and the presence of the 'README_NOVA.me' ransom note or unique file extensions associated with its encryption activity.
Detects the execution of legitimate remote-access software commonly used in social engineering attacks, such as Quick Assist and AnyDesk. These tools are frequently abused as an initial access or persistence mechanism by threat actors following initial contact via methods like vishing or email-based social engineering.
Detects the creation of scheduled tasks, recurring jobs, or webhook subscriptions by a user identity flagged as an AI_AGENT. This activity is monitored for persistence, especially when the event lacks a descriptive context or targets external networks, suggesting potential unauthorized agent behavioral drift or malicious persistence.
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