# New WannaCryptor‑like ransomware attack hits globally: All you need to know **[welivesecurity.com/2017/06/27/new-ransomware-attack-hits-ukraine](https://www.welivesecurity.com/2017/06/27/new-ransomware-attack-hits-ukraine)** June 27, 2017 Numerous reports are coming out on social media about a new ransomware attack in Ukraine, which could be related to the Petya family. [Editor](https://www.welivesecurity.com/author/editorla/) 27 Jun 2017 - 05:07PM Numerous reports are coming out on social media about a new ransomware attack in Ukraine, which could be related to the Petya family. ----- _Update (June 28 – 15:00 CEST): ESET researchers have confirmed that further affected_ _systems had access to Ukraine networks through VPN. Presently, it has not been seen in_ _the malware a functionality to spread outside of the LAN network._ _Update (June 27 – 23.34 CEST): Shutting down the computer and not booting again could_ _prevent the disk encryption, though several files can be already encrypted after the MBR is_ _replaced and further infection through the network is attempted._ _Update (June 27 – 22.28 CEST): Paying is no longer possible as the email to send the_ _[Bitcoin wallet ID and “personal installation key” has been shut down by the provider. Thus,](https://posteo.de/en/blog/info-on-the-petrwrappetya-ransomware-email-account-in-question-already-blocked-since-midday)_ _people shouldn’t pay for the ransom as they will not be able to receive the decryption key._ _Update (June 27 – 21.20 CEST): ESET researchers have located the point from which this_ _global epidemic has all started. Attackers have successfully compromised the accounting_ _software M.E.Doc, popular across various industries in Ukraine, including financial_ _institutions. Several of them executed a trojanized update of M.E.Doc, which allowed_ _attackers to launch the massive ransomware campaign today which spread across the_ _whole country and the rest of the world. M.E.Doc has today released a warning on its_ _website._ Numerous reports are coming out on social media about a new ransomware attack in [Ukraine, which could be related to the Petya family (subsequently being referred to as](http://www.virusradar.com/en/Win32_Diskcoder.Petya.A/description) NotPetya and ExPetya, due to its particularly unique characteristics), which is currently detected by ESET as Win32/Diskcoder.C Trojan. If it successfully infects the MBR, it will [encrypt the whole drive itself. Otherwise, it encrypts all files, like Mischa.](http://www.virusradar.com/en/Win32_Filecoder.Mischa/description) For spreading, it appears to be using a combination of the SMB exploit (EternalBlue) used by [WannaCryptor for getting inside the network, then spreading through PsExec for](https://www.welivesecurity.com/2017/05/16/check-eternalblue-pc-patched-wannacryptor-worm-vulnerability/) spreading within the network. This dangerous combination may be the reason why this outbreak has spread globally and rapidly, even after the previous outbreaks have generated media headlines and hopefully most vulnerabilities have been patched. It only takes one unpatched computer to get inside the network, and the malware can get administrator rights and spread to other computers. ----- [The journalist Christian Borys, for example, tweeted that the cyberattack has “allegedly hit”](https://twitter.com/ItsBorys/status/879683607312424960) banks, power grid and postal companies, among others. Moreover, it appears that the government has also come under attack. Borys has also tweeted an image put up on Facebook by Ukraine’s deputy prime minister, Pavlo Rozenko, which shows a computer apparently being encrypted. [The National Bank of Ukraine has also put out a message on its website warning other](https://bank.gov.ua/control/uk/publish/article?art_id=51024788&cat_id=80928) banks of the ransomware attack. It stated: “Currently, the financial sector strengthened security measures and counter hacker attacks all financial market participants.” Forbes [said that while there appear to be similarities with WannaCryptor – with others](https://www.forbes.com/sites/thomasbrewster/2017/06/27/ransomware-spreads-rapidly-hitting-power-companies-banks-airlines-metro/#783003187abd) describing it as WannaCry-esque – it is likely to be a variant of Petya. ----- An image, similar to the one witnessed by WannaCryptor victims, reportedly showing the [ransomware message is making the rounds online, with one from Group-IB showing the](https://twitter.com/GroupIB_GIB/status/879687387235971073) following message (paraphrased): “If you see this text, then your files are no longer accessible, because they have been encrypted … We guarantee that you can recover all your files safely and easily. All you need to do is submit the payment [$300 bitcoins] and purchase the decryption key.” However, a spokesman said that “there is no effect on power supplies”, although it may be too early to ascertain this. [It appears that the ransomware attack is not specific to Ukraine. The Independent said that](http://www.independent.co.uk/life-style/gadgets-and-tech/news/hack-cyber-attack-ukraine-russia-wannacry-petya-security-internet-broken-computer-not-working-a7810626.html) Spain and India may also have been affected, as well as the Danish shipping company Maersk and the British advertising company WPP. ----- On the latter’s homepage, the following message reads: “The WPP web site is currently unavailable due to important routine maintenance normal service will resume shortly. “We apologise for any inconvenience this may cause. In the meantime if you would like to contact WPP, please email the site Editor at the following address …” [WPP has since confirmed on Twitter that it has been the victim of an attack: “IT systems in](https://twitter.com/WPP/status/879706256612761600) several WPP companies have been affected by a suspected cyberattack. We are taking appropriate measures & will update asap.” There are also reports that payments are being made in response to the attack, at the BTC [address linked here.](https://blockchain.info/address/1Mz7153HMuxXTuR2R1t78mGSdzaAtNbBWX) For more on Petya, check out [this insightful piece from 2016, which notes of the crypto-](https://www.welivesecurity.com/2016/09/13/how-encryption-molded-crypto-ransomware/) ransomware: [“Petya took an approach different from that of other crypto-ransomware. Instead of](https://www.welivesecurity.com/2016/04/28/ransomware-is-everywhere-but-even-black-hats-make-mistakes/) encrypting files individually, it aimed at the file system. “The target is the victim’s [master boot record (MBR), which is responsible for loading the](https://en.wikipedia.org/wiki/Master_boot_record) operating system right after system boot.” [In order to prevent this kind of threat, we recommend that you read our support article and](http://support.eset.com/alert6488/) keep in mind the following steps: 1. Always have your systems fully patched [2. Use a proper security solution](https://www.eset.com/int/home/smart-security-premium/) ----- 3. Do not use the same account/credentials for workstations and server administration 4. Disable default ADMIN$ or communication to admin shares – users can use ESET Smart Security for home and ESET Endpoint Security 6+ for business where network attack protection is present (Option: IDS and advanced options->allow incoming connections to admin shares in SMB) 5. Disable SMB1 when possible – issues with XP, 2003 that do not know SMB2+ _This is currently a breaking story. Further updates to come, as listed above. For a snapshot_ _of recent major ransomware attacks and what else to do, see the infographic below:_ ----- ----- ----- 27 Jun 2017 - 05:07PM ## Sign up to receive an email update whenever a new article is published in our Ukraine Crisis – Digital Security Resource Center Newsletter Discussion -----