Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,458 downloads7,116 copies47 likes38,543 views
11,679 detections
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Detects signs of malicious activity involving specific files (StreamServiceSharedBridge.ps1, ComponentTask33Agent) and behaviors, including PowerShell execution, scheduled task creation, script execution via wscript, and registry run key modification. These behaviors are indicative of persistence mechanisms and potentially suspicious command execution.
Detects the use of PowerShell to delete .js files located within the 'Downloads' directory. This behavior is commonly associated with cleanup of dropped malicious payloads or script-based malware artifacts.
Detects suspicious PowerShell command lines indicative of process termination or abnormal enumeration of .NET Framework process directories via WMI. This includes using Stop-Process against specific proxy execution binaries or using Get-CimInstance to inspect sensitive .NET framework directory structures, which may be associated with process hollowing or security product interference.
Detects the execution of PowerShell scripts containing specific obfuscation or encoding patterns. The rule identifies potential malicious intent by searching for hardcoded suspicious strings or common binary-to-string conversion methods used to hide script content from security monitoring.
Detects PowerShell instances executing 'Stop-Process' against known living-off-the-land binaries (LotLBin) or PowerShell processes explicitly terminating these specific binaries. This behavior is often associated with process hollowing, anti-forensics, or attempts to clear space for malicious code injection by terminating security or system-related tools.
Detects the use of PowerShell to perform a web request to google.com to download a file named Document.pdf, followed by the immediate execution of that downloaded file using Start-Process.
Detects host reconnaissance activity performed by PureLog Stealer, characterized by the execution of system administration tools (e.g., wmic, reg, systeminfo) spawned as child processes from .NET LOLBins (e.g., msbuild, installutil, regsvcs). This behavior indicates an adversary performing discovery of system configuration and environment details.
Detects malicious manipulation of browser-based AI agents where process command-line arguments indicate an attempt to instruct the agent to access, summarize, and exfiltrate email messages from a user's webmail account.
Detects the execution of specific web browsers (Chrome, Edge, Opera) to facilitate identification of vulnerable browser versions as indicated by CVE-2026-0628 and CVE-2026-55945. This rule does not perform version checking directly but serves as a telemetry trigger for external asset inventory correlation.
This rule identifies potential prompt injection attempts against Microsoft Copilot and Azure OpenAI services by monitoring CloudAppEvents for specific adversarial markers, encoded instruction blocks, or hidden text patterns. It flags recurring attempts from a single user as suspicious probing activity.
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