Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,457 downloads7,048 copies47 likes38,293 views
11,679 detections
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Detects the HTTPS POST exfiltration enforcing the server-side gate using the actor's custom X-Rise-To-The-Trinny: agree header or X-QT-SR: 14 header, associated with TeamPCP supply chain attacks.
Detects the creation of web shells (.aspx, .ashx) in the SmarterMail web root directory by the mail service process. This is a common persistence mechanism used by attackers after exploiting vulnerabilities like CVE-2026-24423 to maintain remote access.
Detects network communication to known Command and Control (C2) IP addresses used by the Medusa ransomware group.
This rule identifies processes that trigger three or more STATUS_INVALID_PAGE_PROTECTION (0xC0000045) errors within a one-second interval. This specific behavior is caused by a recurring programming flaw in the pkr_mtsi packer, where it attempts to call NtProtectVirtualMemory with invalid memory protection constants.
Detects the execution of 'code.exe' with 'tunnel service install' command-line arguments, initiated by 'WINWORD.EXE'. This activity indicates an attempt to install a persistent tunnel service, potentially as part of a phishing attack chain.
Detects instances where rundll32.exe is spawned by common command-line or installer processes (cmd.exe or msiexec.exe), often associated with malicious script execution or payload deployment from user-writable directories (AppData\Roaming) or using batch files.
This rule monitors for suspicious emails involving the 'gasparinutrition.com' domain, specifically looking for indicators such as DMARC failures, spoofed display names (e.g., 'monitoring'), or attachments with file names related to business documents like distribution, settlement, or agreements. It also triggers on DNS queries for the same domain, which could indicate related outbound communications or C2 activity.
Detects Python-based command and control activity associated with LegionLoader by monitoring for network connections, DNS queries to specific malicious domains, and file modifications involving '_socket.pyd' within the 'Traiolx Custom Utils' directory path.
Detects the loading of the system dynamic link library USER32.dll by a process executing from a suspicious directory within AppData\Roaming\Traiolx Custom Utils\. This behavior is consistent with potential DLL side-loading or process injection attempts where a process residing in a non-standard or user-writable location attempts to interact with critical OS system modules.
Detects instances where common PDF reader applications (Adobe Acrobat, Foxit Reader) spawn a web browser or command interpreter process with an HTTP/HTTPS URL in the command line. This behavior is highly indicative of a user interacting with a malicious link or call-to-action embedded within a PDF document, frequently associated with credential harvesting phishing campaigns.
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