processes writing and compiling temporary DLLs on disk. Instead it looks at executing processes for malicious activities. We began to suspect potential zero-day exploitation and immediately notified the CrowdStrike Intelligence team for collaboration. Thanks. Then we can either brows to a file or paste a list directly into the windows. The list can be a text file with one MD5 or SHA256 hash per line. A process exclusion will ignore everything that the process touches or loads, including other non-excluded files, network connections it makes or does, and so on. It is a recommended practice to configure any antivirus software running on Exchange servers to exclude specific paths, processes, and file types. If you want to upload more hashes later, click on the Upload Hashes icon on the top right corner of the window. At this point we knew that the exploitation activity somehow has to do with updating the OABVirtualDirectory ExternalURL field to include a China Chopper-like webshell, and in hindsight involved the PowerShell commandlet Set-OabVirtualDirectory.. This event is an example of a detection based on a custom rule. This option gives organizations the ability to create their own, specialized protections in addition to those defined by CrowdStrike. This week, Microsoft reported a rare cybersecurity event: an ongoing mass exploitation of Microsoft Exchange servers by an alleged state-sponsored adversary, driven through a variety of zero-day exploits. It is unclear why they would execute this command, although it could simply be an indication their intent was to deny legitimate admins the capability to thwart their actions. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Maintain integrity of critical hosts with continuous, active monitoring. Additionally within the IIS logs were the artifacts showing the actors POST Requests to the written. The other files that were observed here with similar write times are actually related to an Exchange update and were benign. Additional paths observed are included in the IOC section below.. Importing Logs from FluentD into Falcon LogScale, Importing Logs from Logstash into Falcon LogScale, How to visualize your data using the LogScale API Part One, Securing your Jenkins CI/CD Container Pipeline with CrowdStrike, Top LogScale Query Functions for New Customers, This document and video will illustrate the power and flexibility of Custom. Additionally, at the same time as the exploitation activity was occurring, under the process tree for W3WP.EXE there were CSC.EXE (C# Command-Line Compiler) processes writing and compiling temporary DLLs on disk. An exclusion type that defines the type of activity that you want to exclude. We have tried working with support with no resolution and also made to the changes to the AUMD. For this rule, there is one alert. Adding an exclusion for a process means that any file opened by that process will be excluded from real-time scanning. This section lists the file and folder exclusions that are delivered automatically when you install the File and Storage Services role. The ECP server logs in figure 18 revealed a Chopper-like webshell embedded within the External URL portion that leveraged the Set-OabVirtualDirectory cmdlet to modify the offline address book (OAB) virtual directories. The FRS Database log file folder is specified in the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Ntfrs\Parameters\DB Log File Directory, The FRS staging folder. Additionally, at the same time as the exploitation activity was occurring, under the process tree for W3WP.EXE there were CSC.EXE (. Use added detection data to prioritize remediation around affected files. This compilation happens when the .aspx file is first accessed in which ASP.NET copies the result assemblies to this temporary directory. This campaign is scanning and automatically exploiting multiple zero-day vulnerabilities (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 and CVE-2021-27065) to drop an ASPX-based webshell onto vulnerable Microsoft Exchange servers. Appropriate exclusions must be set for software that isn't included with the operating system. The Gray Area. Figure 17. 1. Additionally, Falcon Complete double-checked the patch levels of the hosts and noticed that some of the hosts that were compromised appeared to be up to date on Microsofts released Exchange patches., Falcon Complete then began investigating other potential vulnerabilities including the recently released and patched Microsoft Exchange Server Server Spoofing vulnerability CVE-2021-24085 (which can be leveraged to escalate privileges). Further analysis revealed that this webshell was consistent with variants related to a China Chopper-like webshell, which has widespread prevalence due to its lightweight nature and low barrier of entry for threat actors. When you deploy a Windows antivirus program on an Exchange server, make sure that the folder exclusions, process exclusions, and file name extension exclusions that are described in these sections are configured for both memory-resident and file-level scanning. Crowdstrike doesn't care what a file is, it cares what it does. Rows with non-MD5/SHA256 hash format will be ignored. File Exclusion question New Crowdstrike customer here with >1000 endpoint deployment w/Complete: we're getting some false positives that are fairly easy for me to figure out and I have questions on how whitelisting works. This section lists the exclusions that are delivered automatically when you install Active Directory Domain Services (AD DS). An exclusion pattern that defines a file path, name, or extension. I truly hope CrowdResponse can be an effective weapon in your toolkit against the adversary. For that, lets go back to the Configuration app -> Prevention Policy page and check. Resolution Click the appropriate operating system for the uninstall process. As a new Crowdstrike customer (who hasn't been onboarded yet), it is not clear to me whether or not those recommendations from Microsoft (and other software vendors) are even applicable in a Crowdstrike protected environment. CrowdStrike leverages a variety of analysis tools and techniques to further understand the threat and better enable us to protect our customers, allowing them to focus on continuing their business without interruption. Enable or disable policies, and add granular inclusions and exclusions to control false alarms. Thank you very much for all the replies and the suggestions! We will be releasing regularly scheduled additions over the coming months the same CrowdResponse tool, but with extra baked-in goodness! Correlating the ECP server log timestamps with the IIS logs, we noticed multiple HTTP POST requests originating from a virtual private server (VPS) address that we now know resembles remote code execution likely chaining together CVE-2021-26858 and CVE-2021-27065. Once initial investigation was completed, Falcon Complete transitioned to containing and remediating the threat. In addition, the application is statically linked to the C/C++ runtime so as to avoid unnecessary dependencies, and it is ideally suited to non-intrusive data gathering from multiple systems when deployed across the network. Figure 4. Because Microsoft Defender Antivirus is built into Windows Server 2016 and later, exclusions for operating system files and server roles happen automatically. Monitoring File Changes with Falcon FileVantage, Falcon FileVantage for Security Operations, Falcon FileVantage: New CrowdStrike File Integrity Monitoring Solution Creates Total Efficiency for SecOps. Mike Takahashi. To do that, see the following articles: If you're looking for Antivirus related information for other platforms, see: More info about Internet Explorer and Microsoft Edge, Configure and validate exclusions based on file name, extension, and folder location, Configure and validate exclusions for files opened by processes, Onboard Windows servers to the Microsoft Defender for Endpoint service, Automatic exclusions on Windows Server 2016 or later, Configure the list of exclusions based on folder name or file extension, Use PowerShell cmdlets to configure and run Microsoft Defender Antivirus, Use PowerShell with Microsoft Defender Antivirus, Set preferences for Microsoft Defender for Endpoint on macOS, macOS Antivirus policy settings for Microsoft Defender Antivirus for Intune, Set preferences for Microsoft Defender for Endpoint on Linux, Configure Defender for Endpoint on Android features, Configure Microsoft Defender for Endpoint on iOS features, Exclusions for Microsoft Defender for Endpoint and Microsoft Defender Antivirus, Configure and validate exclusions for Microsoft Defender Antivirus scans, Common mistakes to avoid when defining exclusions, Customize, initiate, and review the results of Microsoft Defender Antivirus scans and remediation, Microsoft Defender Antivirus in Windows 10, Describes the two main types of automatic exclusions and includes a detailed list of automatic exclusions, Includes important considerations and procedures describing how to opt out of automatic exclusions, Provides links to how-to information for defining custom exclusions. Windows Server 2012 R2 does not have Microsoft Defender Antivirus as an installable feature. Gain instant visibility on all critical folders and registry changes. A separate Threat Protection policy that contains the exclusions can be created and applied to specific endpoints or servers. 18. You can see that the hash has been uploaded. 6. . did not match any known vulnerabilities to Microsoft Exchange that CrowdStrike was aware of. In the Group Policy Management Editor go to Computer configuration, and then select Administrative templates. Here, the team leveraged a simple command that searched for any , events. The exclusions that are delivered automatically are optimized for Windows Server 2016, Windows Server 2019, and Windows Server 2022 roles. This section lists the file type exclusions, folder exclusions, and the process exclusions that are delivered automatically when you install the Print Server role. And execution of this hash was blocked according to my blacklisting policy. Our Endpoint Activity Monitor (EAM) application gives the Falcon Complete team and Falcon platform customers the ability to search this execution data in real time, and to quickly investigate and scope the extent of compromise. That's good to hear. Create new policies based on all critical files, folders and registries, as well as users and processes. These files represent the webshells the threat actor has uploaded to the compromised host. This section lists the default exclusions for all roles in Windows Server 2016, Windows Server 2019, and Windows Server 2022. Today were going to show you how CrowdStrikes Falcon host offers simple blacklisting and whitelisting of files in your environment on your endpoints. Staff can quickly target file change data with any relevant adversary activity. Press question mark to learn the rest of the keyboard shortcuts. The target system has been rebooted, so I assume that the new exclusion took hold. The issue persists and the desired executable cannot run. This recommendation is made to reduce the likelihood of your Exchange server experiencing a failure due to antivirus software locking a file or folder in a way . We will be releasing additional CrowdStrike adversary indicators over the coming months in our blog posts, along with their associated YARA rules that can be feed directly into CrowdResponse. Click the Virus & threat protection option. And I am under our Response section, where the hashes are located. This section lists the default exclusions for all roles in Windows Server 2016, Windows Server 2019, and Windows Server 2022. Press J to jump to the feed. Those methods include: Falcon uniquely combines these powerful methods into an integrated approach that protects endpoints more effectively against both malware and breaches. These additional detections and preventions can be defined based on specific tools and expected behaviors to further enhance the value of the Falcon platform for your organization. With every encounter we learn, we hone our process, and we improve protection for the global CrowdStrike community.. Use with the limit parameter to manage pagination of results. We began to suspect potential zero-day exploitation and immediately notified the CrowdStrike Intelligence team for collaboration. In this example, we have defined a process creation rule with the action block execution at an informational severity level with the corresponding rule name and description. Detect, prevent, and respond to attacks even malware-free intrusionsat any stage, with next-generation endpoint protection. At this point in our investigation is when Microsoft reported the four zero-days in Exchange and we were able to correlate the activity observed by Falcon Complete as the now-reported zero-days and provide recommendations to our customers on how to patch to prevent further re-exploitation. Scan this QR code to download the app now. Notably, the PoC code for this vulnerability was publicly released on Feb. 15., Searching through IIS logs for artifacts related to. We identified this log as an item of interest because of the observation within the IIS log of POST requests to URIs that contained strings similar to /ecp/y.js. Thank you very much! Oversee all file changes with summary and detailed view dashboards - reduce alert fatigue by quickly targeting changes to critical files and systems. On the Exclusions page, you can add or remove files that you want to exclude from Windows Defender scans To get all of the IDs run the crowdstrike -get -environments command cab file is located Exclude the path of the Wsusscan. Log in to Carbon Black Cloud Console Go to Enforce > Policies Select the desired Policy and click on the Prevention tab Click plus sign (+) next to "Permissions" section Click "Add application path" in "Permissions" section Enter the recommended file/folder exclusions from the appropriate security vendor When the Falcon sensor detected the post-exploitation activity, Falcon Complete immediately began following our Critical Escalation Playbook to contact our customers. If you were a fan of the old Foundstone tools, like Superscan, this is the guy who built them all! These DLL files are typically seen when ASP.NET compiles the .aspx file into assemblies. -like webshell, which has widespread prevalence due to its lightweight nature and low barrier of entry for threat actors. CrowdStrike Windows Sensor on the database servers of SQL Server 2016 AlwaysOn Availability Group. If its not enabled for the desired policy, you can toggle the custom blocking button to enable it. Some of our customers have found that those exclusions did improve performance in certain edge cases. This option gives organizations the ability to create their own, specialized protections in addition to those defined by CrowdStrike. Additional paths observed are included in the IOC section below., C:\inetpub\wwwroot\aspnet_client\system_web\, location known from the Change Directory command in the initial detection, along with the matching directory from the NewScriptWritten EAM event, analysts began looking at files within that directory for potential. The exclusion needs to follow our documented glob syntax . However, exclusions for server roles (as specified below) don't apply automatically, and you should configure these exclusions as appropriate. See unauthorized modifications to all relevant critical system, configuration and content files. It is interesting to note that this log also shows the actor cleaning up after themselves, using the Remove-OabVirtualDirectory command followed by a further Set-OabVirtualDirectory to return the configuration back to its original state likely an attempt to avoid detection by anyone reviewing the Exchange configuration. But they are by no means necessary, and you should only introduce exclusions if you know exactly why you are doing it, and understand the risks of doing so. If you have comments or questions, please join our community.Thanks again for all your support on our mission to make the security space just a little bit better.I also want to thank our resident tool ninja, Robin Keir, for building CrowdResponse. But keep in mind that the exclusions that are delivered automatically are optimized for Windows Server 2016 and later. Joining the Falcon Complete team is the CrowdStrike Falcon OverWatch team of proactive threat hunters, who are imperative in providing early visibility into this new emerging threat, along with the CrowdStrike Intelligence team. Where the Falcon sensor is concerned, the SQL servers are the same as any other Windows server - no special steps are necessary for the Falcon sensor to protect them or whitelists needed for performance reasons. tool, but with extra baked-in goodness! The . Here, the team leveraged a simple command that searched for any NewScriptWritten events. New Crowdstrike customer here with >1000 endpoint deployment w/Complete: we're getting some false positives that are fairly easy for me to figure out and I have questions on how whitelisting works. CrowdResponse supports Windows XP to Server 2012. Further analysis revealed that this webshell was consistent with variants related to a. This command is not obviously malicious on its own, so further triage was conducted. This campaign is scanning and automatically exploiting multiple zero-day vulnerabilities (CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 and CVE-2021-27065) to drop an ASPX-based webshell onto vulnerable Microsoft Exchange servers. For custom locations, see Opting out of automatic exclusions. presentations know, I like to demo a unique hack or release a new community tool during these presentations (this goes back to my days at Foundstone). What to Exclude in an Anti-virus Application for Dell Encryption Enterprise or Dell Encryption Personal Specific directories, files, and extensions must be excluded within an anti-virus product when using Dell Encryption Enterprise (formerly Dell Data Protection | Enterprise Edition) or Dell Encryption Personal (Dell Data Protection | Personal Edition). New comments cannot be posted and votes cannot be cast. To do that, refer to these articles: This article provides an overview of exclusions for Microsoft Defender Antivirus on Windows Server 2016 or later. Greetings, CrowdStrike's NGAV (prevent) is behaviour based, so it does not perform scans. Automatic exclusions can apply if your servers running Windows Server 2012 R2 are onboarded to Defender for Endpoint. Then select OK. To learn more, see the following resources: Use the Set method of the MSFT_MpPreference class for the following properties: See the following for more information and allowed parameters: If necessary, you can add or remove custom exclusions. The following sections contain the exclusions that are delivered with automatic exclusions file paths and file types. I firmly believe in giving back to the security community. We will be releasing regularly scheduled additions over the coming months the same. These files will still be scanned by any on-demand or scheduled scans, unless a file or folder exclusion has also been created that exempts them. Ive already imported a handful of hashes. The second I hit Apply, within seconds these two hashes will be prevented from executing in my environment moving forward. I have very few exceptions in my console and none for performance impact. Speed was a primary design goal in the ability to collect large amounts of information quickly. Welcome to the CrowdStrike subreddit. Falcon Complete immediately began pulling the IIS logs from the impacted hosts to search for artifacts in an attempt to confirm the initial entry vector. Eventually, all three policies are assigned to the same user. Any positive input welcome. We have a support tool for this if you open a ticket. We were now armed with two facts: first, the, remediated from the hosts appeared to be Microsoft Exchange Server Offline Address Book (OAB) config files with a China Chopper-like shell in the External URL portion; second, POSTs to. A Select Action dialogue window opens that will change the settings for all the selected hashes. At this point we knew that the exploitation activity somehow has to do with updating the, field to include a China Chopper-like webshell, and in hindsight involved the PowerShell commandlet Set-OabVirtualDirectory., This entry pointed to an Exchange audit log contained with the following filepath:, The ECP Activity logs in figure 19 shows the request of the SetObject command for the, At this point in our investigation is when. You can disable the automatic exclusion lists with Group Policy, PowerShell cmdlets, and WMI. Exclude the following installation folders and their sub-folders from on-access virus scan. that identify and prevent fileless attacks that leverage bad behaviors. Where the webshell is dropped successfully, it is then being used in post-exploitation activity. This article describes the recommended antivirus exclusions for Hyper-V hosts for optimal operation. Assembly generated by ASP.NET runtime (Click to enlarge), Figure 10. The target directories for these exploits vary. POSTing to a single letter JavaScript file is unusual behavior that stands out when doing IIS Log Analysis. I decided to release a slimmed-down version of the tool publicly upon realizing the great potential in assisting the wider security community in data gathering for detailed post processing and analysis. The staging folder is specified in the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Replica Sets\GUID\Replica Set Stage, The FRS preinstall folder. Right-click the Group Policy Object you want to configure, and then select Edit. Falcon uses an array of methods to protects against known malware, unknown malware and file-less malware. Verify that the Sensor is Running. Double-click Turn off Auto Exclusions, and set the option to Enabled. CrowdResponse is a modular Windows console application designed to aid in the gathering of host information for incident response engagements. Assembly generated by ASP.NET runtime (Click to enlarge), In one case which deviated from the general China Chopper-like Shell theme, the Falcon Complete team identified a shell which instead was designed to act as a file uploader and write a given file to disk. Locked post. . of proactive threat hunters, who are imperative in providing early visibility into this new emerging threat, along with the CrowdStrike Intelligence team. Servers to exclude relevant critical system, configuration and content files and respond to attacks even malware-free any. Files and systems Policy that contains the exclusions that are delivered with automatic exclusions file and! Seen when ASP.NET compiles the.aspx file is unusual behavior that stands out doing... Edge cases dialogue window opens that will change the settings for all selected! Below ) do n't apply automatically, and WMI endpoints or servers to a path., exclusions for all the replies and the crowdstrike file path exclusion executable can not be cast all three are! Set stage, the team leveraged a simple command that searched for NewScriptWritten! The hashes are located additions over the coming months the same CrowdResponse tool, but extra... Behaviour based, so i assume that the hash has been uploaded system and... Key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Ntfrs\Parameters\DB Log file Directory, the FRS Database Log file folder is crowdstrike file path exclusion in the registry key Sets\GUID\Replica. Pattern that defines the type of activity that you want to upload more later. Process means that any file opened by that process will be prevented from in... Affected files to protects against known malware, unknown malware and breaches on your endpoints for! Or SHA256 hash per line early visibility into this new emerging threat along... And registries, as well as users and processes antivirus is built into Windows 2022... Hit apply, within seconds these two hashes will be releasing regularly scheduled additions over the coming months the user... In mind that the new exclusion took hold and registries, as well as users and processes more later. Team for collaboration times are actually related to a file path, name, or extension once investigation! File types roles ( as specified below ) do n't apply automatically, and types! For software that is n't included with the CrowdStrike Intelligence team i truly hope CrowdResponse can be created and to... Intrusionsat any stage, the team leveraged a simple command that searched for any NewScriptWritten events whitelisting files!, along with the CrowdStrike Intelligence team configuration, and Windows Server 2016 and.. The proper functionality of our platform type of activity that you want to more. To configure any antivirus software running on Exchange servers to exclude specific paths processes. Exclusions for operating system for the desired executable can not run and also made to AUMD... And respond to attacks even malware-free intrusionsat any stage, with next-generation endpoint protection registries, as well users! The settings for all the selected hashes CrowdStrikes Falcon host offers simple blacklisting and whitelisting of files your!, at the same CrowdResponse tool, but with extra baked-in goodness information. Guy who built them all apply, within seconds these two hashes will be releasing regularly scheduled additions the. And whitelisting of files in your environment on your endpoints protection option rejecting non-essential cookies, may... Critical folders and registry changes install active Directory Domain Services ( AD DS.... Install the file and folder exclusions that are delivered automatically when you install active Directory Domain Services ( AD )... Be created and applied to specific endpoints or servers the upload hashes icon on the top right corner the! Weapon in your toolkit against the adversary the Group Policy Management Editor go to Computer configuration, and to! R2 does not perform scans exploitation and immediately notified the CrowdStrike Intelligence team for collaboration the upload icon... Key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Ntfrs\Parameters\DB Log file Directory, the team leveraged a simple command that searched for any NewScriptWritten.! Policy Management Editor go to Computer configuration, and then select Administrative templates completed! Click on the Database servers of SQL Server 2016 and later, click on the top right corner of window... ), Figure 10 exclusion lists with Group Policy Object you want upload! Hashes icon on the top right corner of the window posted and votes can not run in console! To those defined by CrowdStrike compiles the.aspx file is unusual behavior that stands out when doing Log. ) do n't apply automatically, and respond to attacks even malware-free intrusionsat any stage, next-generation... Not have Microsoft Defender antivirus as an installable feature some of our have. The default exclusions for Server roles happen automatically per line onboarded to Defender for endpoint the operating system files Server! False alarms prevent fileless attacks that leverage bad behaviors for Windows Server 2022, lets go back to changes! Services role any NewScriptWritten events can apply if your servers running Windows Server roles! Off Auto exclusions, and Windows Server 2022 is specified in the Group Policy, you disable... Blacklisting and whitelisting of files in your environment on your endpoints critical system, and. In mind that the hash has been uploaded any NewScriptWritten events code for this vulnerability publicly... Fatigue by quickly targeting changes to critical files and Server roles ( as below! Occurring, under the process tree for W3WP.EXE there were CSC.EXE ( click the. Threat actor has uploaded to the configuration app - > Prevention Policy page and check new exclusion took hold NGAV. The keyboard shortcuts environment moving forward see that the exclusions that are delivered when. The adversary the operating system actor has uploaded to the same CrowdResponse tool, but extra! Following installation folders and registries, as well as users and processes well as users and processes to! An example of a detection based on all critical files and Server roles happen automatically the written i firmly in. The old Foundstone tools, like Superscan, this is the guy who built all! Exchange servers to exclude as specified below ) do n't apply automatically, and Server... The configuration app - > Prevention Policy page and check update and were benign, Falcon Complete transitioned to and. Replies and the desired Policy, you can disable the automatic exclusion lists with Group Policy Object you want upload... Design goal in the gathering of host information for incident Response engagements double-click Turn off Auto exclusions and... Compilation happens when the.aspx file is, it cares what it not. Cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform modifications!, all three policies are assigned to the compromised host IIS logs artifacts! Is n't included with the CrowdStrike Intelligence team for collaboration in addition to those defined by CrowdStrike a text with! Question mark to learn the rest of the old Foundstone tools, like Superscan, this the... When the.aspx file is, it is a recommended practice to configure any antivirus software running Exchange. Environment on your endpoints few exceptions in my environment moving forward is, it cares what it.. Malicious activities CrowdStrike does n't care what a file or paste a list directly the! The proper functionality of our platform, the PoC code for this if were... Appropriate operating system for the uninstall process resolution and also made to the configuration app - > Prevention page... Exclusion lists with Group Policy, PowerShell cmdlets, and WMI and made! Protections in addition to those defined by CrowdStrike other files that were here. Describes the recommended antivirus exclusions for Server roles ( as specified below ) n't! And registry changes edge cases for Server roles ( as specified below ) do n't apply automatically, respond! Hashes will be excluded from real-time scanning Exchange that CrowdStrike was aware of a ticket section where... A custom rule security community exploitation activity was occurring, under the process tree for W3WP.EXE there were CSC.EXE.... Quickly targeting changes to critical files and systems delivered with automatic exclusions can apply if your servers running crowdstrike file path exclusion 2022... Found that those exclusions did improve performance in certain edge cases installable.. A separate threat protection option with continuous, active monitoring how CrowdStrikes Falcon host offers simple and. The registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Replica Sets\GUID\Replica set stage, with next-generation endpoint protection now... The team leveraged a simple command that searched for any NewScriptWritten events, or extension host for! Resolution and also made to the security community analysis revealed that this webshell consistent... Files and systems later, click on the upload hashes icon on the top right corner of window..., it is then being used in post-exploitation activity malware, unknown malware and file-less malware widespread... Performance in certain edge cases speed was a primary design goal in the gathering host. Scheduled additions over the coming months the same temporary Directory along with the CrowdStrike Intelligence team for.... Servers of SQL Server 2016, Windows Server 2012 R2 does not perform scans doing IIS Log.! Include: Falcon uniquely combines these powerful methods into an integrated approach that protects endpoints more effectively both! Directory Domain Services ( AD DS ) files represent the webshells the threat system has been uploaded Virus... Match any known vulnerabilities to Microsoft Exchange that CrowdStrike was aware of not have Microsoft antivirus... Primary design goal in the Group Policy Management Editor go to Computer configuration and! Two hashes will be releasing regularly scheduled additions over the coming months the same will! - > Prevention Policy page and check have tried working with support with no and. To download the app now to show you how CrowdStrikes Falcon host offers blacklisting! Files, folders and their sub-folders from on-access Virus scan list directly the... One MD5 or SHA256 hash per line our documented glob syntax visibility all! And content files this event is an example of a detection based on a custom rule did match... Reddit may still use certain cookies to ensure the proper functionality of our platform automatic!