Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,458 downloads7,120 copies47 likes38,591 views
11,679 detections
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Detects phishing emails impersonating Booking.com, specifically targeting Japanese users with malicious .cfd domains, suspicious subject lines, or attachments like 'invite.ics'. The rule assigns risk scores based on specific indicators such as URL patterns, body text, and sender domains.
Detects anomalous network traffic patterns communicating with the Telegram Bot API (api.telegram.org) from non-official Telegram processes. The rule identifies potential command and control (C2) activity by analyzing request frequency, specific API method usage (e.g., getUpdates, sendMessage), and beaconing-like behavior.
Detects the creation of persistence via a malicious Windows service named 'MixedSvc' or any service pointing to 'Mixed Reality.exe' located within 'C:\Program Files\Windows Media Player\'. This activity is consistent with the 'Operation DragonReturn' campaign and the 'Silver Fox' threat actor, where the 'Mixed Reality.exe' binary acts as a host for DLL-sideloading of the DcRAT backdoor.
This rule correlates process execution patterns to detect a potential malicious document or file download chain. It monitors for child processes spawned by common document viewers (Adobe Acrobat, Word, Excel, PowerPoint) or browsers (Edge, Chrome, Firefox) that subsequently launch suspicious interpreters (cmd, powershell, wscript) or tools (7z, rar), finally leading to potentially malicious payload execution within common user-writable directories, or obfuscated PowerShell command-line execution.
Detects a suspicious pattern where a large volume of files (documents, archives, or media) are written to common user directories, followed within 10 minutes by attempts to impair system recovery (deleting shadow copies) or disable Microsoft Defender exclusions using native Windows utilities such as vssadmin, wmic, or PowerShell. This behavior is highly indicative of ransomware staging activities.
Identifies the malicious RMM establishing persistence by creating a system service configured to auto-start the backdoor on reboot. The rule specifically looks for the 'sc.exe' utility being used to create a service with a binary path pointing to an executable within the 'AppData' directory and configured for automatic startup.
Detects potential exploitation of the Zerologon vulnerability (CVE-2020-1472) by identifying a high volume of Netlogon authentication requests followed by a successful login by a Domain Admin, indicating a machine account password reset attack.
This rule detects potentially malicious search queries within Microsoft 365 network traffic. It monitors HTTP headers and request bodies for search parameters that contain common web injection markers, such as script, img, or svg tags, and other suspicious keywords indicative of attempted Cross-Site Scripting (XSS) or search-based exploitation.
Detects potential exfiltration of sensitive M365 data via an SSRF vulnerability (CVE-2026-42824). The rule identifies suspicious outbound network requests to Bing's image search service where the 'imgurl' parameter contains external, non-Microsoft URLs, suggesting the service is being used as a proxy to exfiltrate data.
Detects instances where msiexec.exe or cmd.exe initiates a child process, specifically cmd.exe, to execute a batch file (.bat) located within the user's AppData/Roaming directory. This behavior is indicative of potential malicious activity, as adversaries often store and execute payloads in user-writable application data directories to maintain persistence or evade detection.
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