Monday, November 28, 2022

How Does A Computer Get Infected With Ransomware

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What Is Uc San Diego Doing To Protect The Campus Against Ransomware

How does a computer become infected with ransomware?

UC San Diego has a number of security protections in place that assist in the fight against ransomware. These include anti-phishing protections, two-factor authentication, and network-based detections and filters. However, the entire UC San Diego network is only as secure as the weakest link, so we provide vulnerability detection and anti-malware software for all University owned equipment at no cost. Researchers would be well served to complete our Cybersecurity Certification for Research initiative and ensure their critical data is backed up and resilient against ransomware.

Top 10 Best Practices For Prevention And Protection Against Ransomware Attacks

Ransomware is a kind of malware that typically encrypts and blocks access to a victims files, data, or the entire system until payment is made to the attacker.

Ransomware threat has shown an upward growth curve in the past few years. According to a report published by NTT Security in 2018, the volumes of ransomware increased by a staggering 350% in 2017 alone. Security teams that ensure the security of an organizations data must have a roadmap to mitigate the threat posed by such malware practices.

No security system is full-proof. However, organizations can have a restore and recovery plan in place to prevent ransomware attacks rather than finding a cure for the already infected systems. Here is a list of 10 best cybersecurity practices that help detect ransomware attacks, prevent, restore, and recover from the disruption caused by them.

Examples Of Ransomware Attacks

Cyberattacks, including different types of ransomware, occur and evolve all the time, but there are several ways to avoid them.

It all starts with looking to the past to protect your sensitive data in the future. In the next few sections, well cover how hackers have engaged in extortion across computer systems over the years.

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Will Ransomware Infect Onedrive

Ransomware can infect OneDrive. Infection can take place in any of the following ways:

  • Ransomware can infect OneDrive via the OneDrive sync client. In this scenario, the tool that syncs your data to OneDrive becomes corrupt and then spreads the infection.
  • Ransomware can infect OneDrive via illicit permissions. In this type of case, software add-ons or extensions are often the culprit.
  • Ransomware can infect OneDrive via an administrators account. In this scenario, a cyber criminal may phish an administrator for account credentials and then leverage them to introduce ransomware into a system.
  • Who Are The Targets Of Ransomware Attacks

    laptop computer infected ransomware virus pay for unlock data 2314528 ...

    Ransomware can spread across the internet without specific targets. But the nature of this file-encrypting malware means that cybercriminals also are able to choose their targets. This targeting ability enables cybercriminals to go after those who can and possibly are more likely to pay larger ransoms.

    Here are four target groups and how each may be impacted.

    • Groups that are perceived as having smaller security teams. Universities fall into this category because they often have less security along with a high level of file-sharing.
    • Organizations that can and will pay quickly. Government agencies, banks, medical facilities, and similar groups constitute this group, because they need immediate access to their files and may be willing to pay quickly to get them. An example of this is the ransomware attack on Colonial Pipeline in 2021. The U.S. fuel pipeline operator had to shut down its entire network and ended up paying the hackers a ransom of $4.4 million in Bitcoin. Some of the ransom was later recovered.
    • Firms that hold sensitive data. Law firms and similar organizations may be targeted, because cybercriminals bank on the legal controversies that could ensue if the data being held for ransom is leaked.
    • Businesses in the Western markets. Cybercriminals go for the bigger payouts, which means targeting corporate entities. Part of this involves focusing on the United Kingdom, the United States, and Canada due to greater wealth and personal-computer use.

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    Should You Pay The Ransom

    If your system has been infected with malware, and you’ve lost vital data that you can’t restore from backup, should you pay the ransom?

    When speaking theoretically, most law enforcement agencies urge you not to pay ransomware attackers, on the logic that doing so only encourages hackers to create more ransomware. That said, many organizations that find themselves afflicted by malware quickly stop thinking in terms of the “greater good” and start doing a cost-benefit analysis, weighing the price of the ransom against the value of the encrypted data. According to research from Trend Micro, while 66 percent of companies say they would never pay a ransom as a point of principle, in practice 65 percent actually do pay the ransom when they get hit.

    Ransomware attackers keep prices relatively low usually between $700 and $1,300, an amount companies can usually afford to pay on short notice. Some particularly sophisticated malware will detect the country where the infected computer is running and adjust the ransom to match that nation’s economy, demanding more from companies in rich countries and less from those in poor regions.

    File Decryption And Recovery

    There are a number of tools intended specifically to decrypt files locked by ransomware, although successful recovery may not be possible. If the same encryption key is used for all files, decryption tools use files for which there are both uncorrupted backups and encrypted copies recovery of the key, if it is possible, may take several days. Free ransomware decryption tools can help decrypt files encrypted by the following forms of ransomware: AES_NI, Alcatraz Locker, Apocalypse, BadBlock, Bart, BTCWare, Crypt888, CryptoMix, CrySiS, EncrypTile, FindZip, Globe, Hidden Tear, Jigsaw, LambdaLocker, Legion, NoobCrypt, Stampado, SZFLocker, TeslaCrypt, XData. The No More Ransom Project is an initiative by the Netherlands’ police‘s National High Tech Crime Unit, Europols European Cybercrime Centre, Kaspersky Lab and McAfee to help ransomware victims recover their data without paying a ransom. They offer a free CryptoSheriff tool to analyze encrypted files and search for decryption tools.

    In addition, old copies of files may exist on the disk, which has been previously deleted. In some cases, these deleted versions may still be recoverable using software designed for that purpose.

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    Ransom Payment Sometimes Effective

    Cindy Murphy is president of Gillware Digital Forensics and a retired law enforcement detective with more than 20 years’ experience in cybercrime investigations and digital forensics.

    “On one hand, it feels wrong to negotiate with cybercriminals and give them what they want,” says Murphy. “On the other hand, the looming financial hit and business interruption are typically far more detrimental than the payoff amount. If business owners don’t engage with the ransomers, they face the prospect that they and their employees may lose their livelihoods.”

    Though there is a chance that you could pay and not get a decryption key to restore your data, Murphy says that negotiating with cybercriminals is more feasible than many believe.

    “We negotiate several ransomware and cyberattacks weekly,” she says. “One of the largest misconceptions about cybercrime negotiation is that the attackers will take your money and disappear without returning the compromised data or remedying the issue. We find that isn’t the case. There is almost always an opportunity to negotiate for a lower ransom sum, as well.”

    That said, Murphy doesn’t recommend that victims of ransomware communicate directly with the attackers without the guidance of legal counsel, a cybersecurity insurance provider or a digital forensics expert.

    “If there is anything on your computer and network that you haven’t backed up and can’t afford to lose, pay the ransom,” she says.

    How To Prevent A Ransomware Attack

    How to Remove Ransomware Infection from your PC?

    Ransomware is at an unprecedented level and requires international investigation.European police agency EuroPol

    As weve demonstrated, a ransomware attack can be devastating for both your personal online life and your business. Valuable and irreplaceable files can be lost, and ridding yourself of the infection can take hundreds of hours of wasted time.

    Every day, the methods that these hackers use to infect unwitting systems with ransomware grow more sophisticated. You dont have to be one of the growing numbers of victims. Preventing ransomware attacks is simply a matter of savvy practices, vigilance, and good planning.

    Know How Viruses Enter Your Workplace and Computer

    To truly prepare for an attack, you need to know how ransomware can enter your system. These methods of gaining access to your systems are known as attack vectors.

    Attack vectors can be divided into two types: human attack vectors and machine attack vectors.

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    Why Do Ransomware Attacks Keep Happening

    In general, ransomware attacks appear to be increasing in frequency. Ransomware can slip into systems due to unpatched operating systems. They can also penetrate computers via downloaded software.

    Antivirus software can prevent unauthorized applications from infecting your system. File backups can also help save the day. Furthermore, organizations should take care to follow industry-standard compliance guidelines, including those issued by groups like NIST and SANs. Making cyber security a core element of an organizations strategy can prevent cyber attacks of all kinds.

    Who Does Ransomware Target

    Ransomware commonly targets sectors like healthcare, the energy sector, retail, and finance. These sectors represent top targets because data recovery is often complex for them and they are likely to pay ransomware decryption fees.

    Other sectors that are also frequent targets include the legal sector, the food supply chain, education and manufacturing, according to TechRepublic.

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    Teamdrive Protects Data From An Encryption Trojan

    Despite all precautions to increase IT security, an infestation with ransomware, malware or viruses can never be ruled out. Those who create backups usually store data on an external hard disk. If this is connected to a device that has been infected by ransomware, the stored data looks bad. There is also a second weakness when backing up data on external hard drives. Users often do not perform regular backups.

    For comprehensive ransomware protection, TeamDrive offers comprehensive and automated data backup in the cloud. We encrypt the content to protect it from unauthorized access. Thanks to backup, the data is well protected and available in an up-to-date form. The reason for this is the automated, continuous synchronization of data to prevent data loss. We call this Point in Time Recovery.

    Frequently Asked Questions About Ransomware

    How Can I Remove Red Alert Ransomware From My Infected PC [Solved ...
    • What is ransomware?Ransomware is malware that holds your computer or device data hostage. The files are still on your computer, but the ransomware has encrypted them, making the data stored on your computer or mobile device inaccessible.
    • How do ransomware attacks work?Hackers use malicious software to lock and encrypt the files on your computer or device. They can then hold those files hostage, disabling you from accessing your data until you pay a ransom. When you do pay, they may or may not give you a decryption key to regain access.
    • What are the different types of ransomware?The seven most common types of ransomware are crypto malware, lockers, scareware, doxware, RaaS, Mac ransomware, and ransomware on mobile devices.
    • What happens if you get ransomware?If youre a victim of ransomware, youll have to decide if you want to pay the ransom, or if you can remove the malware yourself. The decision might be easier if youve backed up your data.
    • Can ransomware be removed?It is possible to remove this malicious software manually or to use security software to get rid of it. Part of this involves using a decryption tool.
    • Should you pay the ransom?If you can avoid paying the ransom, that would be ideal. Payment not only encourages future criminal activity, but it also doesnt guarantee youll regain access.
    • Can ransomware spread through Wi-Fi?Yes. Ransomware can spread through Wi-Fi networks to infect your computers and other devices.

    Cyber threats have evolved, and so have we.

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    Why Are Ransomware Attacks Increasing

    In 2020, research showed a 7-fold increase in ransomware attacks, as compared to 2019. Cyber criminals have capitalized on the transition to remote work, exploiting new security loopholes to launch ransomware attacks. Unsecured or under-secured legacy systems are also at fault when it comes to perpetuating attacks.

    Ransomware has not only increased ransomware has evolved. The ransomware families that appeared popular in 2019 are no longer as popular in 2020. New ransomware families dominate the scene.

    How Do I Protect Myself From Ransomware

    While there are methods to deal with a ransomware infection, they are imperfect solutions at best, and often require much more technical skill than the average computer user. So heres what we recommend people do in order to avoid fallout from ransomware attacks.

    The first step in ransomware prevention is to invest in awesome cybersecuritya program with real-time protection thats designed to thwart advanced malware attacks such as ransomware. You should also look out for features that will both shield vulnerable programs from threats as well as block ransomware from holding files hostage . Customers who were using the premium version of Malwarebytes for Windows, for example, were protected from all of the major ransomware attacks of 2017.

    Next, as much as it may pain you, you need to create secure backups of your data on a regular basis. Our recommendation is to use cloud storage that includes high-level encryption and multiple-factor authentication. However, you can purchase USBs or an external hard drive where you can save new or updated filesjust be sure to physically disconnect the devices from your computer after backing up, otherwise they can become infected with ransomware, too.

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    What To Do If Youre A Victim Of Ransomware

    Victims of ransomware attacks have various possible options to get their data back. Here are three:

  • Pay the ransom being demanded by the cybercriminals. The problem with this is that cybercriminals are untrustworthy. They may or may not return your data upon payment. Giving in to these types of demands also encourages the cybercriminals to continue engaging in this type of crime.
  • Try to remove the malicious software, as explained below. One way to do this is with a decryption tool.
  • Get rid of the malware by resetting your computer to its factory settings. If youve backed up your data externally or in the cloud, you likely should be all set.
  • How Does Ransomware Decryption Work

    Ransomware: Prevent your computer from being infected

    When dealing with ransomware, there are sometimes a few different decryption options . In some cases, the electronic ransomware notes on computer inform victims that after paying a specified sum, -ranging from hundreds of dollars to hundreds of thousands of dollars- a ransomware decryption key will be available to them. However, in other instances, the cyber criminals lie about having a decryption key. Instead, they take the money and run.

    In other instances, cyber forensics teams can try to decrypt files. A selection of ransomware decryption tools are available from cyber security vendors and from organizations that serve the public, such as Europol.

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    Usb Drives And Portable Computers

    USB drives and portable computers are a common delivery vehicle for ransomware. Connecting an infected device can lead to ransomware encrypting the local machine and potentially spreading across the network.

    Typically this is inadvertent a member of staff unwittingly plugs in an infected USB drive, which encrypts their endpoint but it can also be deliberate. For example, a few years ago, residents of Pakenham, a suburb in Melbourne, discovered unmarked USB drives in their mailboxes. The drives contained ransomware masquerading as a promotional offer from Netflix.

    Fighting Encryption Trojans You Can Do It

    The most common ransomware infection routes include visiting malicious websites, or via unwanted add-ons during downloads. A single careless moment is enough to trigger to a ransomware attack. Since malware is designed to remain undetected for as long as possible, it is difficult to identify an infection. A ransomware attack is most likely to be detected by security software.

    Obviously, changes to file extensions, increased CPU activity and other dubious activity on your computer may indicate an infection. When removing ransomware, there are basically three options available to you. The first is to pay the ransom, which is definitely not recommended. It is therefore best to try to remove the ransomware from your computer. If this is not possible, only one step remains: you will need to reset your computer to factory settings.

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    Identifying Different Types Of Ransomware

    Although there are many different forms of ransomware, this cyber threat can be divided into four primary categories:

  • Crypto/Encryptors – Encryptors are the most common type of ransomware, encrypting all target data and requiring a decryption key to unlock.
  • Lockers – Instead of preventing access to files or applications, Lockers prevent the use of the entire device. Typically a lock screen will display details of the ransom note with a timer to create urgency.
  • Scareware – Scareware fakes an issue on computers, such as detecting viruses or malware. The software will then direct the user to a page to âresolveâ the problem and steal their credit card or other personal information.
  • Doxware/Leakware – Doxware often tries to scam the user or company into paying by threatening to release sensitive information online, like confidential files or intellectual property.
  • Ransomware has become increasingly popular amongst scammers in recent years. Hackers have begun to sell their services to those who donât have the time or capability to create their own malware. This is known as Ransomware-as-a-Service , a ransomware software subscription service similar to a Software-as-a-Service model.

    After Asking The Question How Do You Get Ransomware

    5 Tips to Protect from Ransomware Virus

    In most scenarios, the answers to the first half of the question will be textbook but the second half, how to report suspicious links and attachments, often draws blank faces. This might reveal a major problem with your companys online security, especially when a link has been clicked or an attachment opened.

    After asking How do you get Ransomware?, the next question should concern how to identify suspicious links and attachments, and how to report those suspicions.

    Important: All employees need to know the reporting procedure and the importance of swiftly reporting a clicked link or opened attachment. Only by quickly alerting the IT security team to the possible risk of an infection can a threat be well contained and the potential damage limited.

    Employees must know that even if a computer has been locked by ransomware, swift action can prevent the infection spreading to the rest of the network or stop secondary malware from being dropped.

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