[12/14/2021] New insights about multiple threat actors taking advantage of this vulnerability, including nation-state actors and access brokers linked to ransomware. No SecurID components utilize the affected SmtpAppender class. The information set forth herein is provided "as is" without warranty of any kind. In response to this threat, Azure Web Application Firewall (WAF) has updated Default Rule Set (DRS) versions 1.0/1.1 available for Azure Front Door global deployments, and OWASP ModSecurity Core Rule Set (CRS) version 3.0/3.1 available for Azure Application Gateway V2 regional deployments. Copyright 2020 IBM Corporation. Microsoft Defender for IoT sensor threat intelligence update. Because Java and Log4j are so widely used, this is possibly one of the most significant Internet vulnerabilities since Heartbleed and ShellShock. The following components are not vulnerable to the recent Log4j2 disclosures and are not affected: SecurID Authentication Manager Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Real-time Detection of Log4ShellusingQRadar, In the Rule Response section select Dispatch New Event. Our investigation shows that successful intrusions in these campaigns led to the deployment of the NightSky ransomware. To test these in the most efficient way possible we will create two building blocks to compare the properties to regular expressions. Navigate to the 'Admin' page on your QRadar UI and open 'Extensions Management' under the 'System Configuration' section. This query alerts on a positive pattern match by Azure WAF for CVE-2021-44228 Log4j exploitation attempt. An attacker who can control log messages or log message parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. According toApachethis behavior is now disabled by default in version 2.15.0). Click Ensure the dispatched event is part of an offense and select the index by Source IP. There is high potential for the expanded use of the vulnerabilities. First, we will create a rule that checks the incoming and outgoing IP addresses against the list of known exploiters: Next, we will create a rule to watch for the file hashes of known vulnerable versions of Log4j. To mitigate the affectedNetWitnessdeployments,NetWitnessadministrators should perform the following: On the NetWitness Admin Server Host and Analyst UI: 1. [12/15/2021] Details about ransomware attacks on non-Microsoft hosted Minecraft servers, as well as updates to product guidance, including threat and vulnerability management. *********The Log4j vulnerability is complex, and its full implications are still being researched. NetWitness Platform 11.5 and later : If these preconditions are met, the Log4j packages cannot be exploited with remote code execution via LDAP, however, it is possible to leak system configuration data. NOTE: For customers on NetWitness 11.4 version, there will be no patch available, and the mitigation steps should be performed. Configure your Event Name to be Detected Potential Log4Shell Activity with a description of An event was found that could be associated with Log4Shell CVE-2021-44228Select theHigh Levelcategory of Potential Exploit and alow levelcategory of Potential Web Exploit. You can find some additional information in this post: As always, we are maintaining a Public Collection on this issue in the IBM X-Force Exchange. Trellix, Netskope announce new Amazon Security Lake support to enhance This query surfaces devices with Log4j-related alerts and adds additional context from other alerts on the device. The Webtoos malware has DDoS capabilities and persistence mechanisms that could allow an attacker to perform additional activities. Read and use the information in this RSA Security Advisory to assist in avoiding any situation that might arise from the problems described herein. Microsoft Defender Antivirus detects components and behaviors related to this threat as the following detection names: Users of Microsoft Defender for Endpoint can turn on the following attack surface reduction rule to block or audit some observed activity associated with this threat. We'll show how the NetWitness network detection and response system (NDR) provides near-immediate visibility to drastically reduce the response times on severe exploits like Log4Shell, empowering security teams like yours to swiftly detect and respond to this ominous threat tactic. Note: AQL searching using the Log4j detection function can take a long time compared to the regular expression AQL searching. Once organizations who believe they may be impacted by the Log4j vulnerability have identified their assets, they should initiate the patching cycle. The component is based on a different logging framework core. An attacker can use this flaw to execute code on a remote server. If you have further questions, please feel to reach out towilliam.gragido@netwitness.com. When the application writes this to the log using log4j the lookups are performed. We are reviewing the impact to our products. Detection of Log4Shell (CVE-2021-44228) using QRadar For more information about threat intelligence packages in Defender for IoT, please refer to the documentation. Credit for the discovery of the vulnerability in question was given to Chen Zhaojan, of the Alibaba Cloud Security Team. Microsoft advises customers to investigate with caution, as these alerts dont necessarily indicate successful exploitation: The following alerts detect activities that have been observed in attacks that utilize at least one of the Log4j vulnerabilities. He has 15 years of work experience in cyber security with a background in ethical hacking, penetration testing and threat hunting. Otherwise, register and sign in. This hunting query helps detect suspicious encoded Base64 obfuscated scripts that attackers use to encode payloads for downloading and executing malicious files. We will continue to review and update this list as new information becomes available. NetWitness uses Log4j and is vulnerable to the attack. Microsoft has observed activities including installing coin miners, using Cobalt Strike to enable credential theft and lateral movement, and exfiltrating data from compromised systems. Severity. Below screenshot shows all the scenarios which are actively mitigated by Azure Firewall Premium. Suspicious process event creation from VMWare Horizon TomcatService. In addition,teams should use forms ofmanual inspection forparticularlysensitive applications. NetWitness Network Detection and Response (NDR) technology provides Datashield with the visibility of where Log4j vulnerabilities exist, insight through a customized Packet Parser to identify if . IBM Security Join our 15,000+ members as we work together to overcome the toughest challenges of cybersecurity. For the scope of thisblogwe will just populate these by hand using the IP addresses from theXForceCollection: https://github.com/mubix/CVE-2021-44228-Log4Shell-Hashes. SecurID Authentication Manager Prime (Packaged Solution), SecurID Identity Router (a component of Cloud Authentication Service), SecurID Governance and Lifecycle (SecurID G&L), SecurID Governance and Lifecycle Cloud (SecurID G&L Cloud), SecurID Governance and Lifecycle Data Reach (Packaged Solution), SecurID Authentication Manager 8.6 Patch 1, SecurID G&L: Data Reach (Packaged Solution). SecurID Authentication Manager This component utilizes a SecurID internally maintained and supported version of a log4j 1.2.x library separate and distinct from the Apache branch. Figure 7. SecurID Governance and LifecycleThis component utilizes specific interfaces in a publicly available version of a log4j 1.2.x library. Example detection leveraging network inspection provides details about the Java class returned following successful exploitation. They are also supported on Linux, but they require updating the Microsoft Defender for Endpoint Linux client to version 101.52.57 (30.121092.15257.0) or later. Read and subscribe to the latest announcements and advisories relating to the NetWitness Platform. The lookups the attacker will trigger will cause the log4j to retrieve and execute untrusted content which can be used to gain control of the process. Figure 20. Introduction of a new schema in advanced hunting. Apache Log4j ('Log4Shell'): Background and Detection Rules Prior to this change, this parser only looked for sessions on ports 389 and 636. In addition to the Cobalt Strike and PowerShell reverse shells seen in earlier reports, weve also seen Meterpreter, Bladabindi, and HabitsRAT. Figure 5. As the NetWitness Threat Intelligence Team learns more about the threat(s) associate with Log4Shell, we shall update and share recommendations with our customer here, on this blog. Additionally if you are using QNI or QFlow packet based collection you can search for application signatures. [12/16/2021] New Microsoft Sentinel solution and additional Microsoft Defender for Endpoint detections. Nvd - Cve-2021-44228 This query looks for alert activity pertaining to the Log4j vulnerability. It allows for remote code execution and poses a very serious threat. Phase 2: Identify if a vulnerable application has attempted to retrieve the malicious code for potential execution. Enable automatic updating on theDefender for IoT portalby onboarding your cloud-connected sensor with the toggle for Automatic Threat Intelligence Updates turned on. Log4j vulnerability, aka Log4Shell (CVE-2021-45046 / CVE-2021-44228) On December 9th, 2021, a vulnerability in the common Java utility Log4J was detected that essentially allows for remote code execution (RCE) without authentication. The package is available for download from theMicrosoft Defender for IoT portal(ClickUpdates, thenDownload file (MD5: 4fbc673742b9ca51a9721c682f404c41). For a list of RSA trademarks visithttps://www.rsa.com/en-us/company/rsa-trademarks. The fshec2 package found by ReversingLabs exhibited additional behavior that was likely meant to evade detection. webinars, The true meaning of Log4j, and how to be better prepared for the next one, Key risks of other platforms (endpoints without agents, deleted/augmented logs), How to discover if Log4Shell-like threats have infiltrated and how to remediatequickly. Customers using Azure Firewall Premium have enhanced protection from the Log4j RCE CVE-2021-44228 vulnerability and exploit. This hunting query looks in Azure Web Application Firewall data to find possible exploitation attempts for CVE-2021-44228 involving Log4j vulnerability. Defender Vulnerability Management provides layers of detection to help you discover: Vulnerable software: Discovery is based on installed application Common Platform Enumerations (CPE) that are known to be vulnerable to Log4j remote code execution.. Finding images with the CVE-2021-45046 vulnerability, Find vulnerable running images on Azure portal [preview]. Network detection is a foundational pillar of security awareness and was the first telemetry widely available to security operators for a reason. Apache Log4j is installed on the remote Windows host. Threat and vulnerability managementcapabilities in Microsoft Defender for Endpoint monitor an organizations overall security posture and equip customers with real-time insights into organizational risk through continuous vulnerability discovery, intelligent prioritization, and the ability to seamlessly remediate vulnerabilities. Remote code injection in Log4j CVE-2021-44228 More information about Managed Rules and OWASP ModSecurity Core Rule Set (CRS) on Azure Web Application Firewall can be found here. Figure 23. NetWitness and Datashield Collaboration Mitigates Impact of Log4j Java This hunting query helps detect post-compromise suspicious shell scripts that attackers use for downloading and executing malicious files. Forthe vulnerability to be successfully exploited: NetWitness Platform 11.4 : If these preconditions are met, then it is theoretically possible to exploit the vulnerability to gain shell access to theNetWitnessPlatform. Microsoft can confirm public reports of the Khonsari ransomware family being delivered as payload post-exploitation, as discussed by Bitdefender. An attacker can exploit this by sending requests to a Web Application that will get logged directly such as user agents or requested URLs. Microsoft 365 Defender coordinates multiple security solutions that detect components of observed attacks taking advantage of this vulnerability, from exploitation attempts to remote code execution and post-exploitation activity. The wide use of Log4j across many suppliers products challenge defender teams to mitigate and address the risks posed by the vulnerabilities (CVE-2021-44228 or CVE-2021-45046). Higher maximum distance values may result in increase computational requirements which could impact performance and speed of searches/rules. For more information about how Microsoft Defender for Cloud finds machines affected by CVE-2021-44228, read this tech community post. Remote Code Execution rule for Default Rule Set (DRS) versions 1.0/1.1, Figure 25. [12/27/2021] New capabilities in threat and vulnerability management including a new advanced hunting schema and support for Linux, which requires updating the Microsoft Defender for Linux client; new Microsoft Defender for Containers solution. In the Offense Naming Section select This information should contribute to the name of the associated offense(s). This website uses cookies. Microsoft recommends customers to do additional review of devices where vulnerable installations are discovered. Figure 17. Attackers use Python compiled bytecode to evade detection 1. Log4Shell - Detecting Log4j 2 RCE Using Splunk Please refer to the Product Version Life Cycle for additional details. Attackers may attempt to launch arbitrary code by passing specific commands to a server, which are then logged and executed by the Log4j component. Longtime Cybersecurity Partners Leveraging Each Other's Strengths to Protect Enterprise Customers Against This Widespread Zero-Day Attack NetWitness, an RSA business, and globally trusted provider . Need help? During our sustained monitoring of threats taking advantage of the Log4j 2 vulnerabilities, we observed activity related to attacks being propagated via a previously undisclosed vulnerability in the SolarWinds Serv-U software. Images are automatically scanned for vulnerabilities in three different use cases: when pushed to an Azure container registry, when pulled from an Azure container registry, and when container images are running on a Kubernetes cluster. Figure 22. At the time of this update, we simply do not know just how many organizations worldwide, applications, packages, or platforms are at risk. This detection looks for exploitation attempts in email headers, such as the sender display name, sender, and recipient addresses. IBM TechXchange Community Partner Program. Requires the threat-actor have root privilege (i.e., write access to server files). A vulnerability was recently discovered in Log4j, a commonly usedopen sourcelogging library. Figure 21. ARG provides another way to query resource data for resources found to be affected by the Log4j vulnerability. NetWitness Logs provides instant visibility into log data spread across your entire IT environmentsimplifying threat detection, reducing dwell time and supporting compliance. 2021 RSA Security LLC or its affiliates. Were proud that our NDR solution is enabling Datashield to take fast action to protect its customers.. Sample alert on malicious sender display name found in email correspondence. Join us on Tuesday, March 1st for a virtual live attack simulation that models a Log4J exploit. Light Dark Auto. 2021-12-11 09:02 PM Apache Log4j ('Log4Shell'): Background and Detection Rules What We Know It is important to recognize and understand that this vulnerability and the circumstances related to is exploitation globally are dynamic. Welcome to the IBM TechXchange Community, a place to collaborate, share knowledge, & support one another in everyday challenges. In these cases, an adversary sends a malicious in-game message to a vulnerable Minecraft server, which exploits CVE-2021-44228 to retrieve and execute an attacker-hosted payload on both the server and on connected vulnerable clients. More information can be found here: https://aka.ms/mclog. The vulnerable classes are not used by the solution and the solution does not provide external access to the logging configuration. The string contains jndi, which refers to the Java Naming and Directory Interface. Add the following to line 15 of /run.sh. The updates include the following: To complement this new table, the existing DeviceTvmSoftwareVulnerabilities table in advanced hunting can be used to identify vulnerabilities in installed software on devices: These capabilities integrate with the existing threat and vulnerability management experience and are gradually rolling out. Language: This query identifies a unique string present in malicious PowerShell commands attributed to threat actors exploiting vulnerable Log4j applications. It was the first, although far from only, technology to report in this instance as well. For example, its possible to surface all observed instances of Apache or Java, including specific versions. However, it should produce fewer false positives and provide detection for URL and base64 encoded malicious strings. Click the 'Add' button and upload the zip you downloaded in step 1. The lookups the attacker will trigger will cause the log4j to retrieve and execute untrusted content which can be used to gain control of the process. In no event shall RSA, its affiliates or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if RSA, its affiliates or its suppliers have been advised of the possibility of such damages. DEV-0401 has previously deployed multiple ransomware families including LockFile, AtomSilo, and Rook, and has similarly exploited Internet-facing systems running Confluence (CVE-2021-26084) and on-premises Exchange servers (CVE-2021-34473). Apache Log4j JAR Detection (Windows) info Nessus Plugin ID 156001. All NetWitness Platforms currently supported on 11.4, 11.5, 11.6, 11.7. Weve observed the dropping of additional remote access toolkits and reverse shells via exploitation of CVE-2021-44228, which actors then use for hands-on-keyboard attacks. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Behaviors to look for include but are not limited to the following: Additionally, two legacy NetWitness Packet Parsers have been augmented in order to provide our customers with broader detection capabilities related to the Log4j vulnerability/ Log4Shell exploits while a third new Packet Parser has been added to aid our customers in their hunts, detections & responses: NetWitness Endpoint for Detection and Response User Environments. [1] this occurs when an attacker who has control of log messages or log parameters can execute arbitrary code loaded from LDAP servers when message lookup substitution is enabled. By clicking Accept, you consent to the use of cookies. Remote code injection in Log4j Critical severity GitHub Reviewed Published on Dec 9, 2021 to the GitHub Advisory Database Updated on Apr 4 Vulnerability details Dependabot alerts 0 Package org.apache.logging.log4j:log4j-core ( Maven ) Affected versions >= 2.13.0, < 2.15.0 < 2.3.1 >= 2.4, < 2.12.2 Patched versions 2.15.0 2.3.1 2.12.2 In addition to the pattern matching defined above several organizations are collecting knownIOCsrelated to Log4Shell exploitation. Log4j2 is an open-source Java-based logging utility used in enterprise and cloud applications. The NetWitness Platform delivers complete visibility combined with applied threat intelligence and user behavior analytics to detect, prioritize, investigate threats, and automate response. When the application writes this to the log using log4j the lookups are performed. Kevin leads a team focused on the Canadian market for RSA NetWitness. And despite the efforts of the Apache Project team work to mitigate the threats posed by the vulnerability, reports began flowing online within the threat research and incident response community, in addition to the press and world began mustering in order to brace itself and address threats known and unknown moving forward. This query looks for possibly vulnerable applications using the affected Log4j component. Searching vulnerability assessment findings by CVE identifier, Figure 10. Figure 11. We reported our discovery to SolarWinds, and wed like to thank their teams for immediately investigating and working to remediate the vulnerability. An attacker could use this vulnerability to take control of affected systems. NetWitness has released an advisory notice to help customers mitigate the threat to their NetWitness systems, which can be found here. Network Forensic Tools: The Key to Network Forensics - netwitness.com We are reviewing the impact to our products. RSA Security LLC and its affiliates distribute RSA Security Advisories in order to bring to the attention of users of the affected RSA products, important security information. The current mitigation guidance listed here still remain applicable as we work on providing patches that address these vulnerabilities, The attacker must be able to gain access to theNetWitnessPlatform login screen, The network allows outbound LDAP connections fromNetWitnessPlatformto external sites. Microsoft has also continued to observe malicious activity performing data leakage via the vulnerability without dropping a payload. Recommendation: Customers are recommended to configure Azure Firewall Premium with both IDPSAlert & Deny modeand TLS inspection enabled for proactive protection against CVE-2021-44228 exploit. Microsoft Sentinel also provides a CVE-2021-44228 Log4Shell Research Lab Environment for testing the vulnerability: https://github.com/OTRF/Microsoft-Sentinel2Go/tree/master/grocery-list/Linux/demos/CVE-2021-44228-Log4Shell. To view the mitigation options, click on the Mitigation options button in the Log4j dashboard: You can choose to apply the mitigation to all exposed devices or select specific devices for which you would like to apply it. For more information, go to netwitness.com. Attackers often perform such operations as seen recently to exploit the CVE-2021-44228 vulnerability for C2 communications or exfiltration. How to Detect Apache Log4j Vulnerabilities - Trend Micro Please check back for more information or direct specific concerns to. With nation-state actors testing and implementing the exploit and known ransomware-associated access brokers using it, we highly recommend applying security patches and updating affected products and services as soon as possible. If you have any questions regarding this advisory, contact RSA Customer Support. Components developed by SecurID do not utilize any of the Log4j2 libraries (i.e., no log2j version 2.x libraries are included). This activity ranges from experimentation during development, integration of the vulnerabilities to in-the-wild payload deployment, and exploitation against targets to achieve the actors objectives. NetWitness and Datashield Collaboration Mitigates Impact of Log4j Java MSTIC has also observed the CVE-2021-44228 vulnerability being used by multiple tracked nation-state activity groups originating from China, Iran, North Korea, and Turkey. This data can be brought intoQRadarfor usage in the Real-time Detection patterns as well. This recommendation is a best practice that applies to this threat and other future threats. Log4shell leverages a feature in log4j which performs lookups against the logs it receives. You must be a registered user to add a comment. As reported by RiskIQ, Microsoft has seen Webtoos being deployed via the vulnerability. As we continue to review, RSA systems will be updated with the latest indicators of compromise (IOCs) and will continuously monitor any use of this software in our environments. Please refer to the Dell response to the Apache Log4j remote code execution vulnerability (CVE-2021-44228). To view only vulnerable images that are currently running on a Kubernetes cluster using the Azure portal, navigate to the Microsoft Defender for Cloud service under Azure Portal. To mitigate the affectedNetWitnessdeployments. Follow-on activities from these shells have not been observed at this time, but these tools have the ability to steal passwords and move laterally. Microsoft 365 Defender detects exploitation patterns in different data sources, including cloud application traffic reported by Microsoft Defender for Cloud Apps. Begin by expediting the identification and analysis of all assets while making a concerted effort to identify shadow IT that may be susceptible to exploitation but not accounted for in traditional asset inventories and CMDBs. All components and packaged products listed above utilize a Java Runtime Environment (JRE) that has mitigations against this and other attacks. As early as January 4, attackers started exploiting the CVE-2021-44228 vulnerability in internet-facing systems running VMware Horizon. With this rule we will be attempting to detect as many permutations of the exploit as possible while attempting to optimize performance within the realtime pipeline. Based on our analysis, the attackers are using command and control (CnC) servers that spoof legitimate domains. Proceed with the install. Customers are encouraged to utilize scripts and scanning tools to assess their risk and impact. Suspicious outbound connections from servers. This component is not vulnerable to this issue. We encourage all customers tovalidatetheir systems and taketheappropriateimmediateaction. This query uses syslog data to alert on possible artifacts associated with containers running images related to digital cryptocurrency mining. RSA recommends that all users determine the applicability of this information to their individual situations and take appropriate action.
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