Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects attempts to modify the remote registry via Server Message Block (SMB) by looking for the strings "winreg" and "RegSetValue" in TCP traffic destined for port 445 on the home network. This activity could indicate an attacker attempting to establish persistence, elevate privileges, or evade defenses by altering system configurations.
Detects the creation or modification of the 'DontOfferThroughWUAU'
registry value under the Microsoft MRT policy key. This is a known defense
evasion technique used by malware, such as the SilentCryptoMiner campaign, to
permanently prevent the Microsoft Malicious Software Removal Tool (MSRT) from
automatically updating or installing via Windows Update.
registry value under the Microsoft MRT policy key. This is a known defense
evasion technique used by malware, such as the SilentCryptoMiner campaign, to
permanently prevent the Microsoft Malicious Software Removal Tool (MSRT) from
automatically updating or installing via Windows Update.
MiniPlasma PoC Registry Artifacts
Cortex XDR
Detects the creation of specific registry keys in the .DEFAULT user hive associated with the MiniPlasma (CVE-2020-17103) proof-of-concept exploit. This exploit is a privilege escalation vulnerability.
Detects suspicious modifications to Registry Run and RunOnce keys that include common scripting or command execution keywords (powershell, cmd, .bat). This activity is often associated with persistence mechanisms where adversaries attempt to execute malicious code upon user login.
Detects regedit.exe being used to import a registry (.reg) file located in the C:\ProgramData\ directory. This technique is utilized in the Nimbus RAT attack chain, where users are socially engineered via Teams to manually import a pre-staged .reg file (e.g., InboxCorePro.reg) to establish persistence on the host.
Identifies potentially malicious client-side redirects or forced OAuth flows initiating from the Outlook Web Access (OWA) interface, characterized by 302 statuses and redirect parameters. This activity may indicate post-exploitation actions related to CVE-2026-42897.
Detects a write to windir under USER\.DEFAULT\Volatile Environment, the core primitive of CVE-2020-17103 (MiniPlasma). Writing windir here causes the WER QueueReporting scheduled task to execute wermgr.exe from an attacker-controlled path as SYSTEM instead of the legitimate C:\Windows\System32\wermgr.exe, achieving local privilege escalation. No legitimate software writes to this key.
Detects registry modifications setting ConsentPromptBehaviorAdmin to 0, which weakens UAC protections by elevating without prompting. This behavior was observed in the TAX#TRIDENT campaign where a script disguised as a PNG altered UAC policies prior to silently installing a ManageEngine agent.
Detects unauthorized or unexpected modifications setting DisableLockWorkstation to 1 in the HKCU Policies path. This modification is explicitly used in the GreenPlasma exploit chain to retain interactive workstation access once SYSTEM execution is achieved.
Detects unexpected DACL modifications on critical policy keys (CloudFiles or System Policies). Relaxing these DACLs allows unprivileged actors to write values like DisableLockWorkstation, maintaining exploit persistence.
CloudFiles BlockedApps Registry Symlink
Cortex XDR
Detects registry key creation under CloudFiles\BlockedApps, indicative of the GreenPlasma exploit where attackers use a volatile registry symlink to hijack the CloudFiles policy engine. This technique can be used for privilege escalation.
Huntress has observed Tiflux being used in attacks that aim to establish persistence, transmit screenshots, and run commands to collect system profiling information.
Threat actors behind the rogue Tiflux incidents also installed UltraVNC, an open-source remote access tool, sideloaded other commercial RMMs, including Splashtop and ScreenConnect, and installed an outdated driver that can permit the threat actor to elevate their own privileges on an infected system.
Threat actors behind the rogue Tiflux incidents also installed UltraVNC, an open-source remote access tool, sideloaded other commercial RMMs, including Splashtop and ScreenConnect, and installed an outdated driver that can permit the threat actor to elevate their own privileges on an infected system.
Monitors for modifications to the LocalAccountTokenFilterPolicy registry key being set to 1, a technique used by the IOX proxy (and SHADOW-EARTH-053) to enable Pass-the-Hash attacks and grant administrative rights to remote connections.
Detects command-line registry modifications that enable 'EveryoneIncludesAnonymous' or disable 'RestrictAnonymous' in the Local Security Authority (LSA) configuration. Attackers may perform these actions to lower the environment's security posture, explicitly allowing anonymous LSA enumeration, which aids in internal network discovery.
Detects scripts (Batch, PowerShell) that create a hidden local account (appended with $) and add it to highly privileged groups like Administrators and Remote Desktop Users.
Detects registry modifications aimed at disabling critical Windows utilities (Task Manager, Registry Editor) or degrading the user interface (swapping mouse buttons, hiding desktop icons). These behaviors are indicative of the CrystalX 'Rofl' prankware and disruption module.
Detects attempts to disable security event logging by adding the `MiniNt` registry key.
This key is used to disable the Windows Event Log service, which collects and stores event logs from the operating system and applications.
Adversaries may want to disable this service to prevent logging of security events that could be used to detect their activities.
This key is used to disable the Windows Event Log service, which collects and stores event logs from the operating system and applications.
Adversaries may want to disable this service to prevent logging of security events that could be used to detect their activities.
Detects command line execution attempting to modify fDenyTSConnections registry value via reg add — used by attackers to enable RDP for lateral movement
Detects registry modifications related to 'OracleOciLib' and 'OracleOciLibPath' under 'MSDTC' settings.
Threat actors may modify these registry keys to redirect the loading of 'oci.dll' to a malicious DLL, facilitating phantom DLL hijacking via the MSDTC service.
Threat actors may modify these registry keys to redirect the loading of 'oci.dll' to a malicious DLL, facilitating phantom DLL hijacking via the MSDTC service.
Detects changes to the "NoLMHash" registry value in order to allow Windows to store LM Hashes.
By setting this registry value to "0" (DWORD), Windows will be allowed to store a LAN manager hash of your password in Active Directory and local SAM databases.
By setting this registry value to "0" (DWORD), Windows will be allowed to store a LAN manager hash of your password in Active Directory and local SAM databases.
Detects when the 'AllowMultipleTSSessions' value is enabled.
Which allows for multiple Remote Desktop connection sessions to be opened at once.
This is often used by attacker as a way to connect to an RDP session without disconnecting the other users
Which allows for multiple Remote Desktop connection sessions to be opened at once.
This is often used by attacker as a way to connect to an RDP session without disconnecting the other users
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