persistent - All Articles - CISO Platform2024-03-29T10:13:24Zhttps://www.cisoplatform.com/profiles/blogs/feed/tag/persistentTop 11 Ransomware Prevention Resourceshttps://www.cisoplatform.com/profiles/blogs/top-11-ransomware-resources2016-07-19T09:00:00.000Z2016-07-19T09:00:00.000Zprithahttps://www.cisoplatform.com/members/pritha<div><p><a href="http://www.cisoplatform.com/profiles/blogs/top-11-ransomware-resources" target="_blank"><img width="600" src="{{#staticFileLink}}8669812673,original{{/staticFileLink}}" class="align-center" alt="8669812673?profile=original" /></a></p>
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<p>Ransomware is a type of malicious software (malware) when infected with encrypts all the important files such as documents, pictures, movie file etc with a virtually unbreakable encryption key. Here we have compiled some of the Good-reads blogs, articles, freely available Decryptors and removal kits to keep you up-to-date on the latest happenings in the Ransomware space.</p>
<p><br /> 1. (<strong>Free tools)</strong> <a href="http://betanews.com/2016/07/01/avg-announces-6-new-tools-to-free-your-data-from-ransomware/" target="_blank">AVG announces 6 new free decryption tools to retrieve your encrypted files</a> : AVG has come out with six new tools designed to fight this affliction. Each is for a different form of this malware. <br /> According to AVG These new free tools are for the decryption of six current Ransomware strains: Apocalypse, BadBlock, Crypt888, Legion, SZFLocker, and TeslaCrypt.</p>
<p><br /> 2. <a href="http://www.bleepingcomputer.com/forums/t/577861/locker-ransomware-author-allegedly-releases-database-of-private-keys/" target="_blank">Locker Ransomware author dumps database of private keys, apologizes</a> : Allegedly, the author of the "Locker" ransomware has uploaded a dump of the C2 server database, releasing private keys of infected hosts worldwide to the public. The "author" claims that the release was a mistake, that no further keys will be utilized for encryption, and that automatic decryption of all affected hosts will begin on June 2nd 2016</p>
<p><br /> 3. <strong>(Free tool)</strong> <a href="http://www.welivesecurity.com/2016/05/18/eset-releases-decryptor-recent-variants-teslacrypt-ransomware/" target="_blank">ESET releases new free decryptor for TeslaCrypt ransomware</a>: After TeslaCrypt authors announced that they are closing down their operations and made public their Universal master decryptor key, ESET created a free decryptor tool to unlock files affected by all variants between 3.0.0 and 4.2 of this Ransomware.</p>
<p><br /> 4. <a href="http://www.tripwire.com/state-of-security/latest-security-news/ransomware-removal-kit-published-online-helps-streamline-infection-response/" target="_blank">Ransomware removal kit published online, helps streamline infection response</a>: A security researcher has made a Ransomware removal kit available online with the hope that it will help security professionals and system administrators alike in responding to instances of Ransomware infection. Researcher Jada Cyrus has published the <a href="https://bitbucket.org/jadacyrus/ransomwareremovalkit/overview" target="_blank">kit on Atlassian Bitbucket</a>. The kit itself consists of removal tools for common ransomware variants, as well as <a href="http://www.theregister.co.uk/2015/05/21/ransomware_rescue_kit/" target="_blank">guides on how to perform the necessary removal tasks</a>.</p>
<p><br /> 5. <a href="https://heimdalsecurity.com/blog/what-is-ransomware-protection/" target="_blank">What is Ransomware and 15 Easy Steps To Keep Your System Protected [Updated]</a>: A very comprehensive and updated guide on Ransomware. This Blogs outlines target vectors, attack anatomy, Ransomware families and much more.<br /><br /></p>
<p><span id="docs-internal-guid-929b8036-0284-c542-8284-b91fdd2e1ef1"><span>( Read More:</span> <span><a href="http://www.cisoplatform.com/profiles/blogs/checklist-to-evaluate-siem-vendors">Checklist To Evaluate SIEM Vendors</a> )<br /><br /></span></span></p>
<p><br /> 6. <a href="https://deobfs.com/2016/06/14/behaviour-analysis-of-cerber-ransomware/" target="_blank">Behaviour analysis of CERBER ransomware</a>: The Ransomware so called CERBER has been out since early march according to TrendMicro and so far has used different techniques for delivering the payload to the victim. For instance it has been seen to use compressed JavaScript files (.zip) or in other instances using Windows Script Files (WSFs) which had XML content and then executed by Windows’ wscript.exe utility.</p>
<p><br /> 7. <a href="http://blogs.csc.com/2016/04/14/when-the-cryptolocker-strikes-reasons-for-success-of-ransomware/" target="_blank">When the cryptolocker strikes: Reasons for ransomware success and ways to prevent</a> : What factors lead to the high success of cryptolockers, a type of Ransomware that scrambles your files and asks for a ransom to recover them again?</p>
<p><br /> 8. <a href="https://virtuallysober.com/2016/07/07/catching-ransomware-infections-with-a-honeypot-script-integration-into-zerto-virtual-replication/" target="_blank">Catching Ransomware infections with a Honeypot script & integration into Zerto Virtual replication</a>: This script uses the honeypot technique to detect Ransomware infections by comparing 2 files, a honeypot file and a witness file. </p>
<p><br /> 9. <a href="https://cyberattackblog.wordpress.com/2016/07/06/zeptothe-new-threat/" target="_blank">"Zepto" the new threat</a>: Analysis and anatomy of New Ransomware known as "Zepto". The blog talks about how Zepto infects target computer and how to detect for its behaviour.</p>
<p><br /> 10. <a href="https://technologyevaneglist.wordpress.com/2016/06/27/how-to-trade-bitcoins/" target="_blank">How to trade Bitcoins</a>: Practically, all Ransomware attackers demand ransom in Bitcoins. Bitcoin are a relatively new currency which has significantly increased in value over the past few years. Bitcoins are known as a cryptocurrency and can be traded in order to earn money.</p>
<p><br /> 11. <a href="https://nakedsecurity.sophos.com/2016/06/20/ransomware-thats-100-pure-javascript-no-download-required/" target="_blank">Ransomware thats 100% pure Javascript, no download required</a>: By the start of 2016, many crooks were steadily shifting their infection strategy as the world began to realise that enabling macros was a really bad idea. These days, a lot of ransomware arrives in JavaScript attachments and this blogs analyses and presents the challenges associated with the same.</p>
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<p><span id="docs-internal-guid-ca67eedd-0284-04df-614b-2327f1bce3a4"><span>( Read More:</span> <span><a href="http://www.cisoplatform.com/profiles/blogs/atp-advanced-threat-protection-technology-stack">ATP( Advanced Threat Protection) Technology Stack</a> )</span></span><br /></p>
<p></p></div>Ransomware Attacks: How Prepared Are You?https://www.cisoplatform.com/profiles/blogs/ransomware-attacks-how-prepared-are-you2016-08-01T12:30:00.000Z2016-08-01T12:30:00.000Zprithahttps://www.cisoplatform.com/members/pritha<div><p>RansomWare is a type of malicious software (malware) when infected with encrypts all the important files such as documents, pictures, movie file etc with a virtually unbreakable encryption key. <a href="#_msocom_1">[RM1]</a> The RansomWare arrives via email attachments, insecure downloads, use of outdated browser's, or through Trojans such as Zeus etc. Once executed the malware usually reaches out to its Command & Control server over an internet connection to get the encryption key. The encryption is almost always asymmetric and impossible to crack. The malware is also able to encrypt locally mapped network drives/ cloud storage drives. The main motive of the attacker is to extort money from the victim in return of the private key for decryption. The attacker usually leaves a message in encrypted folders instructing users to pay ransom in Bitcoins or via Moneypak. In most of the cases even paying ransom does not work quite well for the victim as the private key fails to decrypt some of the important documents especially those in mapped drive and locally mapped cloud storage drives. There are RansomWare developed specifically for mobile platforms as well, and have affected thousands of mobile devices worldwide.</p>
<p>Some of the well known RansomWare are CryptoLocker, Cyrptowall, Teslacrypt, Torrentlocker and CTB locker. Frequently attackers release new variants of Ransomware by tweaking and subtly changing lines of codes in most popular ones to avoid detection. According to various research works, India ranks 3rd in the Asia and 9th worldwide among the countries affected by Malware attacks. The most affected being Banking and Pharmaceuticals sectors. A research team at Malwarebytes has identified LeChiffre, whose name means "encryption" in French, which caused millions of dollars of damages after infecting several banks and pharmaceuticals company. According to The Economic times, some companies have paid ransoms in millions of dollars after such attacks.</p>
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<p>( <span id="docs-internal-guid-792e131c-4628-cba6-d4df-c8bcf51cdfdd"><span>Read More:</span> <a href="http://www.cisoplatform.com/profiles/blogs/5-major-types-of-hardware-attacks-you-need-to-know"><span>5 Major Types Of Hardware Attacks You Need To Know</span></a></span> )</p>
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<p><b>Here are some of the tips that you can put to use to prevent yourself from getting into such situations:</b></p>
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<h2><span class="font-size-4">1. Back up your important data at regular intervals</span></h2>
<p>This is the most logical preventive measure that your organization can adopt to thwart any such attacks. Make sure that your Backup solution is up and running as it should. Keep in mind that the back-up should be kept in a separate external drive. If you are using automated backup solution then make sure that your backup drives are connected only during the backup process and are disconnected from the network once the process is complete.</p>
<h2><span class="font-size-4">2. Develop robust vulnerability management and Patch management Program</span></h2>
<p>Vulnerable applications, software's are some of the attack vectors for the attackers. Remember to keep your operating systems, browsers, plug-ins used by your browsers, java and other software's are up to date with the latest patches installed. The best way to accomplish this is by developing robust vulnerability management and patch management program, use of automated vulnerability detection tools and patch management solutions and making sure that the all the patches are installed in a timely manner can ensure you of better protection against such attacks</p>
<h2><span class="font-size-4">3. Fine tune your systems and security solutions to a more secure configuration</span></h2>
<p>Fine tuning your security solutions and systems can give you a great deal of protection against RansomWare attacks. Tweak your anti-spam solution to filter out mails with executable attachments, tweak your IPS and firewall to block any malicious traffic, disable remote access services on systems if not required, deactivate auto-play for devices, disable unused network adapters (Wi-Fi, Bluetooth etc.), Do not map network drives & cloud storage folders to your local system only if not necessary, configuresystems to show hidden file extensions, block unauthorized USB access, uninstall application that you don't use etc.</p>
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<p>( <span id="docs-internal-guid-792e131c-462a-11fd-2121-74e6a5922b9f"><span>Read More:</span> <a href="http://www.cisoplatform.com/profiles/blogs/5-reasons-to-consider-security-information-event-management"><span>5 Reasons Why You Should Consider Evaluating Security Information & Event Management (SIEM) Solution</span></a></span> )</p>
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<h2><span class="font-size-4">4. Use a good Endpoint security solution to detect any malicious code</span></h2>
<p>A good advance Anti-malware software can help you identify malicious code and possible malware attacks. keep your security software up-to-date with the latest version and malware database. It is also a good idea to run windows firewall or any other host firewall software on your system to detect any unauthorized attempt to connect to internet by any malicious code.</p>
<h2><span class="font-size-4">5. Educate your employees & colleagues</span></h2>
<p>Educate your employees of the safe Internet browsing practices such as not to double click any suspicious links, not to run any suspicious program on their system and not to install any unverified browser plug-ins. Employees should also be educated about social engineered attacks, verifying mail attachments before downloading or opening it etc.</p>
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<p>References:</p>
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<li><a href="http://www.symantec.com/security_response/publications/threatreport.jsp">http://www.symantec.com/security_response/publications/threatreport.jsp</a></li>
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<p><a href="https://blog.malwarebytes.org/intelligence/2016/01/lechiffre-a-manually-run-ransomware/">https://blog.malwarebytes.org/intelligence/2016/01/lechiffre-a-manually-run-ransomware/</a></p>
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