Ibrahim Saud
@tektrixIndiaCompletionist
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11,679 detections
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Detects a suspicious sequence where a non-Microsoft signed process running from a user-writable path (e.g., Temp, AppData) spawns a high-integrity or SYSTEM process, followed immediately by persistence activity (modifying Run keys) or the creation of suspicious services/modification of security preferences.
Detects the use of the Windows Service Control Manager (sc.exe) to create, start, or delete a service named 'MixedSvc'. The rule includes specific checks for binPath configurations, which can be indicative of persistence or privilege escalation attempts using services.
This rule detects potentially malicious behavior associated with the DragonReturn malware, including the loading of a specific DLL (nvdaHelperRemote.dll) by system processes or Mixed Reality tools, the execution of suspicious binary names, and network connectivity indicators related to C2 domains.
This rule detects unauthorized modifications to the Antimalware Scan Interface (AMSI) in memory. It specifically monitors for calls to VirtualProtect or VirtualProtectEx when directed at amsi.dll or attempting to patch AmsiOpenSession, which is a common technique used by malware to disable AMSI scanning capabilities and evade EDR/AV inspection.
Detects modifications to Windows Registry Run keys associated with the persistence mechanism of Millenium RAT, specifically looking for indicators such as the 'Liu5GgJiKiKqe2Qs' folder or suspicious 'MsEdgeUpdate' entries pointing to executable files in the AppData directory.
Detects the use of PowerShell commands 'Add-MpPreference' or 'Set-MpPreference' to add the entire C drive as an exclusion path for Windows Defender. This is a common technique used by attackers to disable security monitoring for the entire file system.
Detects DLL sideloading behavior associated with Operation DragonReturn (Silver Fox), specifically identifying the loading of 'nvdaHelperRemote.dll' by 'Mixed Reality.exe' and the creation of the DLL in the Windows Media Player directory by unauthorized processes.
This rule monitors for the creation or modification of Windows Registry Run/RunOnce keys by executables residing in non-standard, user-writable directories (e.g., AppData, Temp, Downloads). It triggers when an initiating process performs this action while using masquerading names (matching common system binaries), using suspicious lure-themed naming, or when the run key value points to AppData for a file lacking version metadata, which are patterns observed in Millenium RAT activity.
Detects anomalous PowerShell process execution by monitoring for indicators of obfuscation, use of download cradles, and execution from suspicious parent processes. This detection specifically aligns with techniques associated with the Millenium RAT C++ v4.x stagers, flagging processes that exhibit multiple risk indicators simultaneously.
Detects unauthorized processes, other than established web browsers, attempting to read, access, or copy sensitive browser data files (such as 'Login Data', 'cookies.sqlite', or 'key4.db') that store user credentials, cookies, and web history.
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