Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects unauthorized modifications to Windows Registry Run/RunOnce keys or the Startup folder. The rule specifically targets persistence attempts where the associated process resides in suspicious directories (Temp, AppData) or uses command-line arguments indicative of script execution (powershell, wscript, mshta, encoded commands, or script extensions). It excludes known legitimate installer behavior involving msiexec or setup processes.
Detects anomalous Kerberos service ticket (TGS) requests or successful logons where the corresponding Ticket Granting Ticket (TGT) request (Event ID 4768) is absent within the monitored window. This pattern is a primary indicator of offline-forged Kerberos tickets, such as those generated by Mimikatz, which bypass legitimate KDC interaction for ticket issuance.
This rule detects the suspicious execution of rundll32.exe or regsvr32.exe, which are commonly abused as Living-off-the-Land Binaries (LOLBins). It identifies potential malicious activity by analyzing command-line arguments for patterns like remote URL requests, usage of scrobj.dll, JavaScript protocols, or specific Squiblydoo attack patterns. Additionally, it monitors for these binaries being executed by parents other than explorer.exe, which is indicative of potential process injection or proxy execution.
This rule detects potential RDP brute force and password spraying attacks by correlating Windows Event ID 4625 (failed logins) and 4624 (successful logins) via RDP (Logon Type 10). It monitors for high volumes of failed attempts across multiple accounts or high volume of failed attempts from a single source, followed by successful authentication from the same source.
This rule detects potential lateral movement indicative of PsExec or similar administrative tools. It identifies the combination of remote service installation (often using ADMIN$ or Temp paths), access to administrative shares (ADMIN$ or C$), and the execution of a process spawned by services.exe, which is characteristic of the remote service control manager performing remote service starts.
Detects anomalous lateral movement behavior characterized by an account performing multiple NTLM authentication events (Logon Type 3) across distinct hosts within a short time window, specifically where Kerberos pre-authentication is absent. This pattern is frequently observed in Pass-the-Hash (PtH) attacks where attackers utilize stolen NTLM hashes to move laterally.
Detects network traffic associated with the ClickFix Traffic Distribution System (TDS), specifically targeting requests to known malicious domains like fsputnik.com and uasputnik.com, as well as associated fake Cloudflare verification lure pages.
Detects the execution of known, signed legitimate binaries (COTFileReadApp.exe or DeElevate64.exe) from user-writable directories, such as %LOCALAPPDATA%\Programs\. This behavior is a common indicator of DLL sideloading, where adversaries utilize a trusted, signed application to execute malicious code by placing a malicious DLL in the same directory as the executable.
Detects the creation of a Windows scheduled task named 'psychedelicloveUtils' using schtasks.exe, which is indicative of persistence mechanisms employed by the Psychedelic Stealer malware following installation.
Detects the execution of rundll32.exe or regsvr32.exe where the command line arguments reference a DLL that was recently written to the disk on the same host. This behavior is indicative of a RAT or malware dropping a secondary payload (DLL) and immediately executing it using built-in Windows binary proxies to bypass security controls.
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