Blog

Inside the SOC

Eメール

バイトサイズのセキュリティ:なりすましの手口はDarktraceのAIを欺けない

Default blog imageDefault blog imageDefault blog imageDefault blog imageDefault blog imageDefault blog image
23
Oct 2022
23
Oct 2022
In this blog, a Darktace analyst explores common email impersonation techniques seen by the SOC team and explains how DETECT/Email is able to identify them.

脅威アクターが悪意のあるメールを送信する最も一般的な方法は、スプーフィングとなりすましの2つの手法によるものです。なりすましメールは、信頼できるドメインから送信され、送信者の真の出所を分からなくするのに対し、なりすましメールは、偽のドメインから送信されますが、視覚的に本物のドメインと混同される可能性があります。疑わしいメールからなりすましの手口を特定するためには、まず、攻撃者がなぜなりすましではなく、なりすましの手法を利用するのかを検討する必要があります。

ドメインスプーフィングが検証を欠き、メールセキュリティゲートウェイソフトウェアによって容易に検知されるのとは対照的に、そっくりなドメインによるなりすましでは、攻撃者はSPFとDKIMを完全に検証してメールを送信し、多くのセキュリティゲートウェイに正当なものとして見せることができるのです。このブログでは、なりすましの手口と、Darktrace/Emailがどのようにそれらから保護されるかについて説明します。 

なりすまし戦術を活用するには、2つの方法があります: 

1. ドメインになりすます 

2. そのドメインに属する実在のユーザーになりすます  

ドメインのなりすましは、しばしば「紛らわしい文字」を使って行われます。これは、文字置換によってスペルを間違え、ドメインが視覚的に元のドメインとできるだけ同じように見えるようにするものです(例:m rn, o 0, l  I)。また、脅威アクターは、そのユーザーのEメールの個人フィールドを新しい悪意のあるドメインに追加することによって、実際のユーザーになりすますことができます。なりすましメールと正規のメールを比較すると、これらの不正なメールアドレスがいかに本物と類似しているかがわかります(図1)。

図1:smartercornmerce[.]net ドメインからの Mike Lewis からのなりすましEメールを強調したEメールログ。なりすましドメインとともに、攻撃者は、既知のユーザーである Mike Lewis にもなりすまそうとしています。この2つの異なるタイプのなりすましは、Darktrace/Emailが「Double Impersonation Email(二重なりすましメール)」と呼ぶメールに分類されます。

図2: "smartercornmerce[.]net" の送信者 Mike Lewis が送信した二重なりすましメールの詳細。Darktrace/Email が検知したさまざまな異常指標、および適用したさまざまなタグとアクションをハイライト表示しています。

Darktrace/Emailは、AIを利用して、メールのFromヘッダーのドメインを既知の外部ドメインと比較することで、なりすましメールを分析し、既知のドメインの模倣である可能性をパーセントでスコア化します(図3)。  

図3: Darktraceは、外部送信者 mike.lewis@smartercornmerce[.]net を、ネットワーク上の異なる受信Eメールで観測された類似の外部の人名およびドメインと比較します。

なりすましメールは、Domain External Spoof Score や Domain Internal Spoof Score などのなりすましスコア指標でも検知されます(図4)。 

図4: Darktrace AIが図2の悪質な二重なりすましメールを解析し、高いドメイン外部なりすましスコア(100)となりすましスコア外部(94)を生成しました。

図2のような二重人格メールは、脅威者が受信者の信頼を獲得し、フィッシングリンクや添付ファイルなどの悪質なペイロードにアクセスさせるために利用されます。例えば、図2の二重人格メールには、WordPressサイトへの疑わしい隠しリンクが含まれており、ユーザーをフィッシングエンドポイントにリダイレクトさせ、機密情報を漏えいさせる可能性があります(図5)。このエンドポイント自体は、支払いをテーマにしたExcelファイルを装った偽の共有リンクに、疑うことを知らない受信者を誘導しているように見えます。

図5:不審なメールに埋め込まれたWordPressのリンクの詳細。表示テキストの下に隠されており、どこにつながるかを知らずにクリックさせるように仕向けられている。このドメインは、Darktrace AIによると、100%の希少度を有しています。

図6:WordPressのウェブページ。ユーザーがクリックすることで、Microsoft Excel文書内の請求書明細にリダイレクトされる別のリンクを強調表示しています

さまざまな指標から、このウェブページは疑わしい、悪意のある可能性があると判断されました。まず、ウェブページへのリンクに SmarterCORNmerce が使用されており、ページ全体で SmarterCOMMERCE が使用されていることと矛盾していました。また、EメールではPDF文書であることが示唆されていましたが、リンク先では請求書の明細がMicrosoft Excelファイルであることが示されていました。さらに調査を進めると、このリンクはFleekのホスティングサービスとCDNに関連しており(図7)、ユーザーを偽のマイクロソフトのページにリダイレクトしていることが判明しました。 

図7:WordPressウェブページのソースコードから、Microsoftの偽のリンクがFleekがホストするページにユーザーをリダイレクトしていることがわかります。このページには、ユーザーのデバイスにマルウェアをダウンロードするための追加のjavascriptコンテンツが含まれている可能性があります

Darktrace/Emailは、図4で強調したドメイン偽装のスコア指標と同様に、メールに埋め込まれた疑わしいペイロードを分析し、ペイロードがフィッシングの試みである可能性を示すスコアを生成しています。

図8:二重なりすましメールの追加メトリクスは、メールの高いフィッシング誘導スコア(96)をハイライトしています

Darktrace/EmailのDETECT 機能がDomain External Spoof ScoreやPhishing Inducementなどの高得点メトリクスを生成すると、RESPOND 機能が補完モデルを起動し、これらのメールに埋め込まれた様々なペイロードやメール自体の配信にさえ関連アクションをトリガーするようになります。図2のなりすましメールは、信頼できるドメインだけでなく、既知の信頼できる送信者にもなりすましたため、Darktrace AIはDouble Impersonation モデルを起動させます。また、Basic Known Entity Similarities + Suspicious Content(基本的な既知のエンティティの類似性+疑わしいコンテンツ)やExternal Domain Similarities + Maximum Similarity(外部ドメインの類似性+最大類似性)などの追加のなりすましモデルも発動し、疑わしいメールが悪意のある攻撃者が送信したドメインとユーザーのなりすましメールである可能性が高いことが示されました。

図9:Emailコンソールは、Basic Known Entity Similarities + Suspicious Content および External Domain Similarities + Maximum Similarity モデルの違反や、悪意あるなりすましメールに反応して重要なアクションを引き起こした様々なモデルをハイライト表示します

Darktrace /Email が悪意のある二重なりすましメールを検知すると、Hold アクションをトリガーして、受信者の受信トレイにメールが表示されないように対応することができます。Darktrace/Email のRESPOND 機能では、Eメールに埋め込まれた疑わしいリンクのペイロードに対して、Double Lock Linkのアクションを起こすことも可能です。これにより、ユーザーが悪意のあるフィッシングリンクをクリックしようとするのを防ぐことができます。このようなアクションは、Darktrace/EmailがAIを使用して、あらゆるユーザーの受信トレイに蔓延する可能性のある悪質ななりすましメールを検知して対策を講じることに優れていることを強調しています。 

なりすましはますます標的となり効率的になっていますが、Darktrace/Emailは検知と遮断の双方の機能を備えており、お客様のEメール環境を安全にカバーすることができます。

Ben Atkinsの本ブログへの寄稿に感謝します。

NEWSLETTER

Like this and want more?

最新の業界ニュースやインサイトをお届けします。
You can unsubscribe at any time. Privacy Policy
INSIDE THE SOC
Darktrace cyber analysts are world-class experts in threat intelligence, threat hunting and incident response, and provide 24/7 SOC support to thousands of Darktrace customers around the globe. Inside the SOC is exclusively authored by these experts, providing analysis of cyber incidents and threat trends, based on real-world experience in the field.
AUTHOR
ABOUT ThE AUTHOR
George Kim
SOC Analyst
この記事を共有
PRODUCT SPOTLIGHT
該当する項目はありません。
COre coverage
該当する項目はありません。

More in this series

該当する項目はありません。

Blog

Inside the SOC

PurpleFox in a Henhouse: How Darktrace Hunted Down a Persistent and Dynamic Rootkit

Default blog imageDefault blog image
27
Nov 2023

Versatile Malware: PurpleFox

As organizations and security teams across the world move to bolster their digital defenses against cyber threats, threats actors, in turn, are forced to adopt more sophisticated tactics, techniques and procedures (TTPs) to circumvent them. Rather than being static and predictable, malware strains are becoming increasingly versatile and therefore elusive to traditional security tools.

One such example is PurpleFox. First observed in 2018, PurpleFox is a combined fileless rootkit and backdoor trojan known to target Windows machines. PurpleFox is known for consistently adapting its functionalities over time, utilizing different infection vectors including known vulnerabilities (CVEs), fake Telegram installers, and phishing. It is also leveraged by other campaigns to deliver ransomware tools, spyware, and cryptocurrency mining malware. It is also widely known for using Microsoft Software Installer (MSI) files masquerading as other file types.

The Evolution of PurpleFox

The Original Strain

First reported in March 2018, PurpleFox was identified to be a trojan that drops itself onto Windows machines using an MSI installation package that alters registry values to replace a legitimate Windows system file [1]. The initial stage of infection relied on the third-party toolkit RIG Exploit Kit (EK). RIG EK is hosted on compromised or malicious websites and is dropped onto the unsuspecting system when they visit browse that site. The built-in Windows installer (MSIEXEC) is leveraged to run the installation package retrieved from the website. This, in turn, drops two files into the Windows directory – namely a malicious dynamic-link library (DLL) that acts as a loader, and the payload of the malware. After infection, PurpleFox is often used to retrieve and deploy other types of malware.  

Subsequent Variants

Since its initial discovery, PurpleFox has also been observed leveraging PowerShell to enable fileless infection and additional privilege escalation vulnerabilities to increase the likelihood of successful infection [2]. The PowerShell script had also been reported to be masquerading as a .jpg image file. PowerSploit modules are utilized to gain elevated privileges if the current user lacks administrator privileges. Once obtained, the script proceeds to retrieve and execute a malicious MSI package, also masquerading as an image file. As of 2020, PurpleFox no longer relied on the RIG EK for its delivery phase, instead spreading via the exploitation of the SMB protocol [3]. The malware would leverage the compromised systems as hosts for the PurpleFox payloads to facilitate its spread to other systems. This mode of infection can occur without any user action, akin to a worm.

The current iteration of PurpleFox reportedly uses brute-forcing of vulnerable services, such as SMB, to facilitate its spread over the network and escalate privileges. By scanning internet-facing Windows computers, PurpleFox exploits weak passwords for Windows user accounts through SMB, including administrative credentials to facilitate further privilege escalation.

Darktrace detection of PurpleFox

In July 2023, Darktrace observed an example of a PurpleFox infection on the network of a customer in the healthcare sector. This observation was a slightly different method of downloading the PurpleFox payload. An affected device was observed initiating a series of service control requests using DCE-RPC, instructing the device to make connections to a host of servers to download a malicious .PNG file, later confirmed to be the PurpleFox rootkit. The device was then observed carrying out worm-like activity to other external internet-facing servers, as well as scanning related subnets.

Darktrace DETECT™ was able to successfully identify and track this compromise across the cyber kill chain and ensure the customer was able to take swift remedial action to prevent the attack from escalating further.

While the customer in question did have Darktrace RESPOND™, it was configured in human confirmation mode, meaning any mitigative actions had to be manually applied by the customer’s security team. If RESPOND had been enabled in autonomous response mode at the time of the attack, it would have been able to take swift action against the compromise to contain it at the earliest instance.

攻撃の概要

Figure 1: Timeline of PurpleFox malware kill chain.

Initial Scanning over SMB

On July 14, 2023, Darktrace detected the affected device scanning other internal devices on the customer’s network via port 445. The numerous connections were consistent with the aforementioned worm-like activity that has been reported from PurpleFox behavior as it appears to be targeting SMB services looking for open or vulnerable channels to exploit.

This initial scanning activity was detected by Darktrace DETECT, specifically through the model breach ‘Device / Suspicious SMB Scanning Activity’. Darktrace’s Cyber AI Analyst™ then launched an autonomous investigation into these internal connections and tied them into one larger-scale network reconnaissance incident, rather than a series of isolated connections.

Figure 2: Cyber AI Analyst technical details summarizing the initial scanning activity seen with the internal network scan over port 445.

As Darktrace RESPOND was configured in human confirmation mode, it was unable to autonomously block these internal connections. However, it did suggest blocking connections on port 445, which could have been manually applied by the customer’s security team.

Figure 3: The affected device’s Model Breach Event Log showing the initial scanning activity observed by Darktrace DETECT and the corresponding suggested RESPOND action.

特権昇格

The device successfully logged in via NTLM with the credential, ‘administrator’. Darktrace recognized that the endpoint was external to the customer’s environment, indicating that the affected device was now being used to propagate the malware to other networks. Considering the lack of observed brute-force activity up to this point, the credentials for ‘administrator’ had likely been compromised prior to Darktrace’s deployment on the network, or outside of Darktrace’s purview via a phishing attack.

Exploitation

Darktrace then detected a series of service control requests over DCE-RPC using the credential ‘admin’ to make SVCCTL Create Service W Requests. A script was then observed where the controlled device is instructed to launch mshta.exe, a Windows-native binary designed to execute Microsoft HTML Application (HTA) files. This enables the execution of arbitrary script code, VBScript in this case.

Figure 4: PurpleFox remote service control activity captured by a Darktrace DETECT model breach.
Figure 5: The infected device’s Model Breach Event Log showing the anomalous service control activity being picked up by DETECT.

There are a few MSIEXEC flags to note:

  • /i : installs or configures a product
  • /Q : sets the user interface level. In this case, it is set to ‘No UI’, which is used for “quiet” execution, so no user interaction is required

Evidently, this was an attempt to evade detection by endpoint users as it is surreptitiously installed onto the system. This corresponds to the download of the rootkit that has previously been associated with PurpleFox. At this stage, the infected device continues to be leveraged as an attack device and scans SMB services over external endpoints. The device also appeared to attempt brute-forcing over NTLM using the same ‘administrator’ credential to these endpoints. This activity was identified by Darktrace DETECT which, if enabled in autonomous response mode would have instantly blocked similar outbound connections, thus preventing the spread of PurpleFox.

Figure 6: The infected device’s Model Breach Event Log showing the outbound activity corresponding to PurpleFox’s wormlike spread. This was caught by DETECT and the corresponding suggested RESPOND action.

Installation

On August 9, Darktrace observed the device making initial attempts to download a malicious .PNG file. This was a notable change in tactics from previously reported PurpleFox campaigns which had been observed utilizing .MOE files for their payloads [3]. The .MOE payloads are binary files that are more easily detected and blocked by traditional signatured-based security measures as they are not associated with known software. The ubiquity of .PNG files, especially on the web, make identifying and blacklisting the files significantly more difficult.

The first connection was made with the URI ‘/test.png’.  It was noted that the HTTP method here was HEAD, a method similar to GET requests except the server must not return a message-body in the response.

The metainformation contained in the HTTP headers in response to a HEAD request should be identical to the information sent in response to a GET request. This method is often used to test hypertext links for validity and recent modification. This is likely a way of checking if the server hosting the payload is still active. Avoiding connections that could possibly be detected by antivirus solutions can help keep this activity under-the-radar.

Figure 7: Packet Capture from an affected customer device showing the initial HTTP requests to the payload server.
Figure 8: Packet Capture showing the HTTP requests to download the payloads.

The server responds with a status code of 200 before the download begins. The HEAD request could be part of the attacker’s verification that the server is still running, and that the payload is available for download. The ‘/test.png’ HEAD request was sent twice, likely for double confirmation to begin the file transfer.

Figure 9: PCAP from the affected customer device showing the Windows Installer user-agent associated with the .PNG file download.

Subsequent analysis using a Packet Capture (PCAP) tool revealed that this connection used the Windows Installer user agent that has previously been associated with PurpleFox. The device then began to download a payload that was masquerading as a Microsoft Word document. The device was thus able to download the payload twice, from two separate endpoints.

By masquerading as a Microsoft Word file, the threat actor was likely attempting to evade the detection of the endpoint user and traditional security tools by passing off as an innocuous text document. Likewise, using a Windows Installer user agent would enable threat actors to bypass antivirus measures and disguise the malicious installation as legitimate download activity.  

Darktrace DETECT identified that these were masqueraded file downloads by correctly identifying the mismatch between the file extension and the true file type. Subsequently, AI Analyst was able to correctly identify the file type and deduced that this download was indicative of the device having been compromised.

In this case, the device attempted to download the payload from several different endpoints, many of which had low antivirus detection rates or open-source intelligence (OSINT) flags, highlighting the need to move beyond traditional signature-base detections.

Figure 10: Cyber AI Analyst technical details summarizing the downloads of the PurpleFox payload.
Figure 11 (a): The Model Breach generated by the masqueraded file transfer associated with the PurpleFox payload.
Figure 11 (b): The Model Breach generated by the masqueraded file transfer associated with the PurpleFox payload.

If Darktrace RESPOND was enabled in autonomous response mode at the time of the attack it would have acted by blocking connections to these suspicious endpoints, thus preventing the download of malicious files. However, as RESPOND was in human confirmation mode, RESPOND actions required manual application by the customer’s security team which unfortunately did not happen, as such the device was able to download the payloads.

結論

The PurpleFox malware is a particularly dynamic strain known to continually evolve over time, utilizing a blend of old and new approaches to achieve its goals which is likely to muddy expectations on its behavior. By frequently employing new methods of attack, malicious actors are able to bypass traditional security tools that rely on signature-based detections and static lists of indictors of compromise (IoCs), necessitating a more sophisticated approach to threat detection.  

Darktrace DETECT’s Self-Learning AI enables it to confront adaptable and elusive threats like PurpleFox. By learning and understanding customer networks, it is able to discern normal network behavior and patterns of life, distinguishing expected activity from potential deviations. This anomaly-based approach to threat detection allows Darktrace to detect cyber threats as soon as they emerge.  

By combining DETECT with the autonomous response capabilities of RESPOND, Darktrace customers are able to effectively safeguard their digital environments and ensure that emerging threats can be identified and shut down at the earliest stage of the kill chain, regardless of the tactics employed by would-be attackers.

Credit to Piramol Krishnan, Cyber Analyst, Qing Hong Kwa, Senior Cyber Analyst & Deputy Team Lead, Singapore

付録

Darktraceによるモデル検知

  • Device / Increased External Connectivity
  • Device / Large Number of Connections to New Endpoints
  • Device / SMB Session Brute Force (Admin)
  • Compliance / External Windows Communications
  • Anomalous Connection / New or Uncommon Service Control
  • Compromise / Unusual SVCCTL Activity
  • Compromise / Rare Domain Pointing to Internal IP
  • Anomalous File / Masqueraded File Transfer

RESPOND Models

  • Antigena / Network / Significant Anomaly / Antigena Breaches Over Time Block
  • Antigena / Network / External Threat / Antigena Suspicious Activity Block
  • Antigena / Network / Significant Anomaly / Antigena Significant Anomaly from Client Block
  • Antigena / Network / Significant Anomaly / Antigena Enhanced Monitoring from Client Block
  • Antigena / Network / External Threat / Antigena Suspicious File Block
  • Antigena / Network / External Threat / Antigena File then New Outbound Block

IoC一覧

IoC - Type - Description

/C558B828.Png - URI - URI for Purple Fox Rootkit [4]

5b1de649f2bc4eb08f1d83f7ea052de5b8fe141f - File Hash - SHA1 hash of C558B828.Png file (Malware payload)

190.4.210[.]242 - IP - Purple Fox C2 Servers

218.4.170[.]236 - IP - IP for download of .PNG file (Malware payload)

180.169.1[.]220 - IP - IP for download of .PNG file (Malware payload)

103.94.108[.]114:10837 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

221.199.171[.]174:16543 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

61.222.155[.]49:14098 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

178.128.103[.]246:17880 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

222.134.99[.]132:12539 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

164.90.152[.]252:18075 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

198.199.80[.]121:11490 - IP - IP from Service Control MSIEXEC script to download PNG file (Malware payload)

MITRE ATT&CK マッピング

Tactic - Technique

Reconnaissance - Active Scanning T1595, Active Scanning: Scanning IP Blocks T1595.001, Active Scanning: Vulnerability Scanning T1595.002

Resource Development - Obtain Capabilities: Malware T1588.001

Initial Access, Defense Evasion, Persistence, Privilege Escalation - Valid Accounts: Default Accounts T1078.001

Initial Access - Drive-by Compromise T1189

Defense Evasion - Masquerading T1036

Credential Access - Brute Force T1110

Discovery - Network Service Discovery T1046

Command and Control - Proxy: External Proxy T1090.002

参考文献

  1. https://blog.360totalsecurity.com/en/purple-fox-trojan-burst-out-globally-and-infected-more-than-30000-users/
  2. https://www.trendmicro.com/en_us/research/19/i/purple-fox-fileless-malware-with-rookit-component-delivered-by-rig-exploit-kit-now-abuses-powershell.html
  3. https://www.akamai.com/blog/security/purple-fox-rootkit-now-propagates-as-a-worm
  4. https://www.foregenix.com/blog/an-overview-on-purple-fox
  5. https://www.trendmicro.com/en_sg/research/21/j/purplefox-adds-new-backdoor-that-uses-websockets.html
続きを読む
著者について
Piramol Krishnan
Cyber Security Analyst

$70 Million in Cyber Security Funding for Electric Cooperatives & Utilities

Default blog imageDefault blog image
22
Nov 2023

What is the Bipartisan Infrastructure Deal?

The Bipartisan Infrastructure Law passed by congress in 2021 aimed to upgrade power and infrastructure to deliver clean, reliable energy across the US to achieve zero-emissions. To date, the largest investment in clean energy, the deal will fund new programs to support the development and deployment of clean energy technology.

Why is it relevant to electric municipalities?

Section 40124 of the Bipartisan Infrastructure Law allocates $250 million over a 5-year period to create the Rural and Municipal Utility Cybersecurity (RMUC) Program to help electric cooperative, municipal, and small investor-owned utilities protect against, detect, respond to, and recover from cybersecurity threats.1 This act illuminates the value behind a full life-cycle approach to cyber security. Thus, finding a cyber security solution that can provide all aspects of security in one integrated platform would enhance the overall security posture and ease many of the challenges that arise with adopting multiple point solutions.

On November 16, 2023 the Office of Cybersecurity, Energy Security, and Emergency Response (CESER) released the Advanced Cybersecurity Technology (ACT) for electric utilities offering a $70 million funding opportunity that aims to enhance the cybersecurity posture of electric cooperative, municipal, and small investor-owned utilities.

Funding Details

10 projects will be funded with application submissions due November 29, 2023, 5:00 pm ET with $200,000 each in cash prizes in the following areas:

  1. Direct support for eligible utilities to make investments in cybersecurity technologies, tools, training, and improvements in utility processes and procedures;
  2. Funding to strengthen the peer-to-peer and not-for-profit cybersecurity technical assistance ecosystem currently serving eligible electric utilities; and
  3. Increasing access to cybersecurity technical assistance and training for eligible utilities with limited cybersecurity resources. 2

To submit for this award visit: https://www.herox.com/ACT1Prize

How can electric municipalities utilize the funding?

While the adoption of hybrid working patterns increase cloud and SaaS usage, the number of industrial IoT devices also continues to rise. The result is decrease in visibility for security teams and new entry points for attackers. Particularly for energy and utility organizations.

Electric cooperatives seeking to enhance their cyber security posture can aim to invest in cyber security tools that provide the following:

Compliance support: Consider finding an OT security solution that maps out how its solutions and features help your organization comply with relevant compliance mandates such as NIST, ISA, FERC, TSA, HIPAA, CIS Controls, and more.

Anomaly based detection: Siloed security solutions also fail to detect attacks that span
the entire organization. Anomaly-based detection enhances an organization’s cyber security posture by proactively defending against potential attacks and maintaining a comprehensive view of their attack surface.

Integration capabilities: Implementation of several point solutions that complete individual tasks runs the risk of increasing workloads for operators and creates additional challenges with compliance, budgeting, and technical support. Look for cyber security tools that integrate with your existing technologies.

Passive and active asset tracking: Active Identification offers accurate enumeration, real time updates, vulnerability assessment, asset validation while Passive Identification eliminates the risk of operational disruption, minimizes risk, does not generate additional network traffic. It would be ideal to find a security solution that can do both.

Can secure both IT and OT in unison: Given that most OT cyber-attacks actually start in IT networks before pivoting into OT, a mature security posture for critical infrastructure would include a single solution for both IT and OT. Separate solutions for IT and OT present challenges when defending network boundaries and detecting incidents when an attacker pivots from IT to OT. These independent solutions also significantly increase operator workload and materially diminish risk mitigation efforts.

Darktrace/OT for Electric Cooperatives and Utilities

For smaller teams with just one or two dedicated employees, Darktrace’s Cyber AI Analyst and Investigation features allow end users to spend less time in the platform as it compiles critical incidents into comprehensive actionable event reports. AI Analyst brings all the information into a centralized view with incident reporting in natural language summaries and can be generated for compliance reports specific to regulatory requirements.  

For larger teams, Darktrace alerts can be forwarded to 3rd party platforms such as a SIEM, where security team decision making is augmented. Additionally, executive reports and autonomous response reduce the alert fatigue generally associated with legacy tools. Most importantly, Darktrace’s unique understanding of normal allows security teams to detect zero-days and signatureless attacks regardless of the size of the organization and how alerts are consumed.

Key Benefits of Darktrace/OT

Figure 1: Darktrace/OT stops threats moving from IT to OT by providing a unified view across both systems

参考文献

1. https://www.whitehouse.gov/briefing-room/statements-releases/2021/11/06/fact-sheet-the-bipartisan-infrastructure-deal/

2. https://www.energy.gov/ceser/rural-and-municipal-utility-advanced-cybersecurity-grant-and-technical-assistance-rmuc

続きを読む
著者について
Jeff Cornelius
EVP, Cyber-Physical Security

Good news for your business.
Bad news for the bad guys.

無償トライアルを開始

無償トライアルを開始

柔軟な導入
Cloud-based deployment.
迅速なインストール
設定時間はわずか1時間、メールセキュリティのトライアルはさらに短時間で完了します。
製品を選ぶ
クラウド、ネットワーク、Eメールなど、最も必要とされる領域で自己学習型AIの能力をお試しください。
購入義務なし
Darktrace Threat Visualizerと組織毎にカスタマイズされた3回の脅威レポートへのフルアクセスを提供しますが、購入の義務はありません。
For more information, please see our Privacy Notice.
Thanks, your request has been received
A member of our team will be in touch with you shortly.
YOU MAY FIND INTERESTING
フォームを送信する際に何らかの問題が発生しました。

デモを見る

柔軟な導入
仮想的にインストールすることも、ハードウェアでインストールすることも可能です。
迅速なインストール
設定時間はわずか1時間、メールセキュリティのトライアルはさらに短時間で完了します。
製品を選ぶ
クラウド、ネットワーク、Eメールなど、最も必要とされる領域で自己学習型AIの能力をお試しください。
購入義務なし
Darktrace Threat Visualizerと組織毎にカスタマイズされた3回の脅威レポートへのフルアクセスを提供しますが、購入の義務はありません。
ありがとうございます!あなたの投稿を受け取りました。
フォームを送信する際に何らかの問題が発生しました。