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Griefランサムウェアの幕を引く







Griefランサムウェア、これはPayOrGriefとも呼ばれていましたが、2021年の中ごろから末にかけてその被害が急速に知られるようになりました。このマルウェアの背後のギャングは四重恐喝ランサムウェア 戦術を使用し、地方自治体や学校区を含む幅広い組織を標的にしました。
2021年7月、このランサムウェアがサイバーセキュリティ業界に最初に知られてからわずか数週間後、Griefはギリシャで2番目に大きい都市、テッサロニキを標的としました。2000万ドルの身代金要求に対し、市のセキュリティチームはそのすべてのウェブサイトと公的サービスのシャットダウンを余儀なくされ、この侵害に対する全面的調査を開始しました。
2人組:GriefとDoppelPaymer
2021年5月の出現以来、Griefは新しいマルウェアを使用し、これは過去の攻撃に基づいて設定されたセキュリティツールを混乱させました。しかし6月には、このグループの攻撃の巧妙さと効率の良さから、Griefのオペレーター達は観測された2か月の活動を超える経験を有しているだろうと多くの人が推測しました。
Griefは現在、DoppelPaymerランサムウェアギャングの新たなブランドであると広く報告されています。このグループは2021年5月に活動を停止しており、またロシアのランサムウェアギャングEvil Corpとつながりがあると見られていました。しかし新たな名前となった後、Griefは従来型のセキュリティツールを次々と打破し、わずか4か月の間に1000万ドルを優に超える 金額を稼ぎ出していました。
改変やブランド変更はRansomware-as-a-Serviceビジネスモデルを使う犯罪集団がよく使うテクニックです。Griefのブランド変更の成功は、ランサムウェアギャングがどれほどすばやく攻撃を一新してシグネチャベースのツールで識別できないようにすることができるかを示しています。
Cyber AI Analystを使ってGriefのトリックを明らかに
2021年7月には、PayOrGriefはあるヨーロッパの製造業企業を標的としましたが、そこではネットワーク全体にDarktraceが導入されていました。 Darktraceによる攻撃の早期検知、またCyber AI Analystによるそのライフサイクルに対するリアルタイムの可視性により、この攻撃の各段階は明確に確認できていました。

最初の侵入では4台のデバイスが感染し、Darktraceはこれらのデバイスが未知の外部IPに接続しエンコードされたテキストファイルをダウンロードしたときにこれを検知しました。これらのデバイスは標的型フィッシング攻撃により侵入された可能性が高く、これはGriefによる攻撃においてDridex等のマルウェアをデバイスに注入するのによく使われる方法です。この組織にAntigena Emailが導入されていれば、このフィッシング攻撃を識別してこれらのEメールが従業員の受信箱に到達するまえに阻止していたでしょう。しかしこのケースでは、攻撃は継続しました。
最初の侵入に続き、C2(コマンド&コントロール)通信が暗号化されたチャネルを通じ無効なSSL証明書を使って行われました。感染したデバイスの1つから50MBのデータがコーポレートサーバーに対してアップロードされ、これにより攻撃者はこの企業の重要資産、つまり最も機密性の高いデータに対するアクセスを手に入れたのです。この特権的地位を確保し、またキープアライブビーコンを動作させ、攻撃はデトネーションの準備ができました。
いくつかのデバイスが合計100 GBを超えるデータを外部のファイルストレージプラットフォームMegaに対し、443番ポートで暗号化HTTPSを使ってアップロードしようとしていることが検知されました。しかし、攻撃者は彼らが期待していたトータルデータパッケージを受けとることはありませんでした。この組織は主要なアセットおよび最も機密性の高いデータを保護するため、Darktraceの自動遮断技術を導入していたのです。AIはこれらの異常な動作を、この企業の通常の「生活パターン」からの著しい逸脱として認識し、保護されたデバイスからのアップロードを自律的にブロックすることにより、その動作が可能なあらゆる場所においてデータ流出を防止しました。

攻撃者はその後デジタル環境内で拡散を続けました。RDPおよびSMBを含む‘Living off the Land (環境に寄生する) ’ テクニックを使って、彼らは内部偵察を行い、権限を昇格させ、さらに多くのデジタル資産に渡って水平移動していきました。最初のC2通信からわずか10時間後、新たな管理者認証情報を手に入れると、攻撃者はランサムウェアの暗号化処理を開始しました。
これらのことから、GriefはおそらくDarktraceユーザーを過去に標的としたことがあり、あまりに早い段階で無害化されたために、攻撃の身元が特定されていなかったケースがあると思われます。この企業では、自動遮断技術をネットワークの特定の部分にのみ導入していたため、保護されていなかったデバイスで攻撃がどのように進行したかを確認することができました。
予期せぬ容疑者
GriefランサムウェアのIoC(Indicators of Compromise)は現在多くの従来型セキュリティツールにも取り込まれていますが、これは短期的な解決策であり、脅威アクターの戦術の変更および彼らが標的とするデジタル環境の変化のいずれについても考慮していません。Griefの名前が陳腐化すれば、別のものがとって代わることは確実でしょう。
サイバーセキュリティに対するAIドリブンのアプローチは、脅威がいつどこで、どのような名前でやって来ても関係なくそれらに対抗できます。デジタルエステート全体に対する高度な理解を構築することに重点を置くDarktraceの自動遮断技術は、特定の異常に対して特定の、程度にあったアクションを実行するもので、それらがまったく新しい攻撃の一部であっても対処が可能です。また、これらの脅威が検知された時点でアクションを実行する自由を与えておくことにより、自動遮断技術は人間のチームが対応できないときにも組織の保護を確実にすることができます。
この調査結果についての考察はDarktraceアナリストBeverly McCannが協力しました。
技術的詳細
Darktraceによるモデル検知
- Device / Suspicious SMB Scanning Activity
- Device / New User Agents
- Anomalous Server Activity / Rare External from Server
- Compliance / External Windows Communications
- Anomalous Connection / Application Protocol on Uncommon Port
- Anomalous Connection / Anomalous SSL without SNI to New External
- Anomalous Connection / Rare External SSL Self-Signed
- Anomalous Connection / Multiple Connections to New External TCP Port
- Anomalous Connection / New User Agent to IP Without Hostname
- Compliance / Remote Management Tool on Server
- Anomalous Server Activity / Outgoing from Server
- Anomalous Connection / Multiple HTTP POSTs to Rare Hostname
- Anomalous Connection / Data Sent to Rare Domain
- Anomalous Connection / Lots of New Connections
- Unusual Activity / Unusual File Storage Data Transfer
- Unusual Activity / Enhanced Unusual External Data Transfer [Enhanced Monitoring]
- Anomalous Connection / Uncommon 1GiB Outbound
- Unusual Activity / Unusual External Data to New Ips
- Anomalous Connection / SMB Enumeration
- Multiple Device Correlations / Behavioral Change Across Multiple Devices
- Device / New or Uncommon WMI Activity
- Unusual Activity / Unusual External Connections
- Device / ICMP Address Scan
- Anomalous Connection / Unusual Admin RDP Session
- Compliance / SMB Version 1 Usage
- Anomalous Connection / Unusual SMB Version 1
- Anomalous File / Internal / Additional Extension Appended to SMB File
- Unusual Activity / Anomalous SMB Move and Write
- Compromise / Ransomware / Suspicious SMB Activity [Enhanced Monitoring]
- Anomalous Connection / Suspicious Read Write Ratio and Unusual SMB
- Anomalous Connection / New or Uncommon Service Control
- Device / New or Unusual Remote Command Execution
- User / New Admin Credentials On Client
- Device / New or Uncommon SMB Named Pipe
- Device / Multiple Lateral Movement Model Breaches [Enhanced Monitoring]
- Anomalous Connection / Suspicious Read Write Ratio
- Device / SMA Lateral Movement
- Anomalous File / Internal / Unusual Internal EXE File Transfer
- Anomalous Server Activity / Unusual Unresponsive Server
- Device / Internet Facing Device with High Priority Alert
- Multiple Device Correlations / Spreading Unusual SMB Activity
- Multiple Device Correlations / Multiple Devices Breaching the Same Model
Darktrace Autonomous Responseアラート
- Antigena / Network / Insider Threat / Antigena Network Scan Block
- Antigena / Network / Insider Threat / Antigena Breaches Over Time Block
- Antigena / Network / Significant Anomaly / Antigena Significant Anomaly Block
- Antigena / Network / Significant Anomaly / Antigena Breaches over Time Block
- Antigena / Network / Insider Threat / Antigena Large Data Volume Outbound Block
- Antigena / Network / Significant Anomaly / Antigena Enhanced Monitoring from Client Block
- Antigena / Network / Insider Threat / Antigena SMB Enumeration Block
- Antigena / Network / Significant Anomaly / Antigena Controlled and Model Breach
- Antigena / Network / Insider Threat / Antigena Internal Anomalous File Activity
- Antigena / Network / Significant Anomaly / Antigena Significant Anomaly from Client Block
- Antigena / Network / External Threat / Antigena Ransomware Block
- Antigena / Network / External Threat / SMB Ratio Antigena Block
観測されたMITRE ATT&CKテクニック
Reconnaissance
T1595 — Active Scanning
Resource Development
T1608 — Stage Capabilities
Initial Access
T1190 — Exploit Public-Facing Application
Persistence
T1133 — External Remote Services
Defense Evasion
T1079 — Valid Accounts
Discovery
T1046 — Network Service Scanning
T1083 — File and Directory Discovery
T1018 — Remote System Discovery
Lateral Movement
T1210 — Exploitation of Remote Services
T1080 — Taint Shared Content
T1570 — Lateral Tool Transfer
T1021 — Remote Services
Command and Control
T1071 — Application Layer Protocol
T1095 — Non-Application Layer Protocol
T1571 — Non-Standard Port
Exfiltration
T1041 — Exfiltration over C2 Channel
T1567 — Exfiltration Over Web Service
T1029 — Scheduled Transfer
Impact
T1486 — Data Encrypted for Impact
T1489 — Service Stop
T1529 — System Shutdown/Reboot
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Inside the SOC
PurpleFox in a Henhouse: How Darktrace Hunted Down a Persistent and Dynamic Rootkit



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

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.

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.

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.


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.

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.


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.

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.



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
- https://blog.360totalsecurity.com/en/purple-fox-trojan-burst-out-globally-and-infected-more-than-30000-users/
- 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
- https://www.akamai.com/blog/security/purple-fox-rootkit-now-propagates-as-a-worm
- https://www.foregenix.com/blog/an-overview-on-purple-fox
- https://www.trendmicro.com/en_sg/research/21/j/purplefox-adds-new-backdoor-that-uses-websockets.html
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OT
$70 Million in Cyber Security Funding for Electric Cooperatives & Utilities



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:
- Direct support for eligible utilities to make investments in cybersecurity technologies, tools, training, and improvements in utility processes and procedures;
- Funding to strengthen the peer-to-peer and not-for-profit cybersecurity technical assistance ecosystem currently serving eligible electric utilities; and
- 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
- Anomaly-based detection and real-time response
- Secures IT, OT, and IoT in unison
- Active and Passive Asset Identification
- Automated security reporting
- Attack surface management and vulnerability assessment
- Covers all levels of the Purdue Model
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参考文献
