Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects reconnaissance activity on IIS servers where the worker process (w3wp.exe) spawns appcmd.exe or PowerShell to list websites, virtual directories, or application pools. This pattern is indicative of an attacker performing post-exploitation discovery after establishing a web shell.
This rule detects instances where a process matching a known sideload-vulnerable binary (such as werfaultsecure or wuauclt) spawns a PowerShell process that executes commands commonly used for Active Directory reconnaissance and system information discovery. This behavior is indicative of post-compromise activity, specifically reconnaissance phases performed by malware loaders like Lorem Ipsum.
Detects instances where the Internet Information Services (IIS) worker process (w3wp.exe) initiates a child process of sqlcmd.exe. This behavior is highly suspicious and often indicates a post-exploitation activity where an attacker, having established a webshell or similar foothold on a web server, is using harvested credentials to query backend SQL databases directly.
Detects potential Pass-the-Hash (PtH) activity by monitoring for NTLM network logons (Logon Type 3) that are associated with a blank WorkstationName, often indicating spoofing. This pattern is correlated with the assignment of special privileges (EventID 4672) to capture scenarios where stolen NTLM hashes are replayed for lateral movement into a system.
Detects the loading of suspicious kernel drivers (Sysmon Event ID 6) that are unsigned, have invalid/revoked signatures, or are located in user-writable directories (e.g., Temp folders). This rule aims to identify Bring Your Own Vulnerable Driver (BYOVD) attacks, where adversaries load vulnerable drivers to escalate privileges or bypass security controls.
Detects attempts to disable, modify, or stop security software and endpoint protection services. The rule monitors for registry changes to Windows Defender settings, manual service management commands (sc, net) targeting security processes, and PowerShell execution using 'Set-MpPreference' to disable protection features.
This rule detects a credential-based attack where a single source IP performs multiple failed RDP (LogonType 3/10) attempts against various user accounts, followed by a successful authentication from the same source within an hour. This pattern is indicative of password spraying or brute-forcing followed by successful lateral movement via Remote Desktop.
Detects potential exploitation attempts of the Zerologon vulnerability (CVE-2020-1472) by monitoring for Domain Controller machine account password resets (Event 4742) targeting DC computer accounts, and insecure Netlogon RPC channel events (Event 5829) triggered when vulnerable clients or tools attempt connections.
This rule detects potential Golden Ticket activity by identifying Kerberos TGS requests (Event ID 4769) that lack a corresponding prior TGT request (Event ID 4768) for the same user and IP address. This behavior is characteristic of offline forged Kerberos tickets where an attacker uses a compromised KRBTGT hash to create authentication tickets without interacting with the Key Distribution Center for the initial TGT.
This rule detects potential Remote Desktop Protocol (RDP) session hijacking or suspicious automation activity. It monitors for the execution of tscon.exe, a system utility used to control remote desktop sessions, or the usage of mstsc.exe (Remote Desktop Connection) over the standard RDP port 3389, which can be indicative of lateral movement or unauthorized access.
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