Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,458 downloads7,098 copies47 likes38,487 views
11,679 detections
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Detects the deletion of Windows Volume Shadow Copies using vssadmin.exe, wmic.exe, or PowerShell (WMI/CIM objects). This activity is commonly used by ransomware to prevent local data recovery by destroying shadow copy backups before encryption.
Detects the use of command-line tools like s5cmd or aws-cli to synchronize or copy data to an Amazon S3 bucket. The rule identifies suspicious patterns by looking for specific transfer commands combined with recursive or high-concurrency flags that indicate mass data movement often associated with exfiltration.
Detects the creation of new administrator or technician accounts within the SimpleHelp Remote Monitoring and Management (RMM) platform via API calls. This activity is often associated with unauthorized persistence creation by an adversary who has gained access to the platform.
Detects a specific pattern of Windows API calls consistent with PIVOTPIPE C2 activity, involving process token impersonation (OpenProcessToken, DuplicateTokenEx, ImpersonateLoggedOnUser, or SetThreadToken) followed by a RevertToSelf call. The rule correlates these events within a single process, identifies artifacts related to PIVOTPIPE loader/payloads, and ensures the sequence completes within a short time window.
Detects the loading or installation of a driver file identified as DCRCVDrv.sys followed within 5 minutes by EDR sensor heartbeat loss or process activity, which is characteristic of attempts to tamper with security software or hide malicious activity via a kernel-mode driver.
Detects the use of 'terraform init' where the command line arguments reference known typosquatted HashiCorp registry domains. This behavior is indicative of a supply chain attack attempting to pull malicious providers or modules from an adversary-controlled source.
Detects Node.js processes executing suspicious command lines that involve fetching and executing remote JavaScript code. This behavior is indicative of a loader or downloader script commonly used to pull and evaluate malicious payloads at runtime, specifically referencing indicators associated with 'GHAPPIER'.
Detects the clearing of Windows event logs using native 'wevtutil.exe' or PowerShell cmdlets. The rule monitors for common log-clearing commands and triggers an alert when multiple such events occur on a single host within a 15-minute window, which is indicative of bulk log-wiping often performed by ransomware or during post-exploitation defense evasion.
Detects the execution of WinRAR utilities (WinRAR.exe, Rar.exe) with suspicious command-line arguments typically associated with data staging, archiving, or encryption. The rule filters out legitimate WinRAR installations and only triggers when the process is spawned by a script interpreter (e.g., PowerShell, CMD) or operates within sensitive file paths (e.g., Users, Shares, Finance, HR, Backup).
Detects unauthorized processes accessing the 'ConsoleHost_history.txt' file across user profiles. This behavior is indicative of ransomware operators or malicious actors attempting to harvest stored credentials, tokens, or sensitive command-line history before performing lateral movement or privilege escalation.
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