One Article Review
| Source |  ProofPoint |
|---|---|
| Identifiant | 8394759 |
| Date de publication | 2023-10-12 09:27:20 (vue: 2023-10-12 15:07:14) |
| Titre | J'ai été frappé par les ransomwares-temps quoi?Étapes pour gérer les conséquences I\\'ve Been Hit by Ransomware-Now What? Steps for Dealing with the Aftermath |
| Texte | The following is an excerpt from the Ransomware Survival Guide, our free handbook on preventing, managing and recovering from ransomware threats at every stage of the attack chain. This blog post provides general tips-it is not a substitute for professional cybersecurity and incident response services. The best ransomware strategy is to avoid it in the first place. But increasingly advanced attacks against the software supply chain and end users have shown that even the best-prepared companies can be caught out. Ransomware may not even be the first malware payload to infect your system, because many ransomware gangs now prefer to buy access to targets already infected with Trojans or loader malware. During an attack, you have short-term problems to resolve, like getting computers, phones and networks back online and dealing with ransom demands. But a panicked response won\'t help-and may make things worse. Here are some general steps you can take to contain the threat and start on the road to recovery. Questions to answer during a ransomware attack Before you react to an attack, it\'s important to take a step back and ask questions that will inform your response. Your answers should help network administrators scope the problem, devise an action plan and possibly curtail the spread. Who in your environment is compromised? How widespread are the infections? Is a threat actor actively scouting your environment, exfiltrating data or ready to drop ransomware on other devices? What network permissions do compromised accounts or devices have? Ransomware may have been installed only after attackers had already moved laterally within the network or stolen credentials and other data. What type of attack is it? Is this attack a secondary infection? Did it come from downloaders, remote access Trojans (RATs) or other malware installed on the infected machine or others on the network? Keep in mind that ransomware spreads quickly and is often a byproduct of other threats. If you see one infection, there are probably others that you don\'t see. Proactively look for other issues within your environment. Now as you take action, there are three general step to follow: Step 1: Isolate infected systems The second employees see the ransomware demand or notice something\'s odd-such as suddenly losing access to their own files-they should disconnect from the network and take the infected machine to the IT department. To prepare for this scenario, we recommend that you keep valuable data and systems separated so that a security issue on one system doesn\'t affect other systems. For example, your sensitive research or business data should not reside on the same server and network segment as your email environment. We advise against having employees reboot their system. Only the IT security team should attempt a reboot, and even that will work only in the event that it is “scareware,” or fake ransomware. "Scareware" is malware that appears to be ransomware but isn\'t. It may lock the user\'s screen with a ransom demand and payment instructions, but the data is not actually encrypted. In those scenarios, standard anti-malware tools can help. Knowing the difference isn\'t always easy. Determine the scope of the problem using threat intelligence and external incident responders or forensic analysts when necessary. While all ransomware is bad, some attacks are worse than others. Your response-including whether to pay the ransom-hinges on several factors. Step 2: Call law enforcement Ransomware-like other forms of theft and extortion-is a crime. Nobody has the right to seize devices, networks or data-let alone demand a ransom in exchange for it. Notifying the proper authorities is a necessary first step. Contact local or federal law enforcement right away. Special departments exist specifically to aid cyber crime victims, so do not be afraid to pick up your phone and call them. They are there to help you and may have access to decryption keys or information on payment recovery after |
| Envoyé | Oui |
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| Tags | Ransomware Malware Tool Threat |
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| Notes | ★★★ |
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