Analysis

  • max time kernel
    153s
  • max time network
    162s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    24-01-2022 02:09

General

  • Target

    4967be7b7244b915b4ac0685327741d1de02aa745a9c5017d30be39396356b19.exe

  • Size

    115KB

  • MD5

    68f898fbd1f714cedf6e1c1259848f61

  • SHA1

    baa9fff6de84047a3fe0e3bc7ddb2921590386af

  • SHA256

    4967be7b7244b915b4ac0685327741d1de02aa745a9c5017d30be39396356b19

  • SHA512

    759f2caa5c559db55902f98319ecb3f696b63f102cf259ebee2da76ef2216563d1d4af8358bb4eb49d7fad66220514dd1f94f7c4904ccc45d0b0d9db98e42e7d

Score
10/10

Malware Config

Extracted

Path

C:\83fv42-readme.txt

Family

ryuk

Ransom Note
---=== Welcome. Again. ===--- [+] Whats Happen? [+] Your files are encrypted, and currently unavailable. You can check it: all files on your computer has extension 83fv42. By the way, everything is possible to recover (restore), but you need to follow our instructions. Otherwise, you cant return your data (NEVER). [+] What guarantees? [+] Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will not cooperate with us. Its not in our interests. To check the ability of returning files, You should go to our website. There you can decrypt one file for free. That is our guarantee. If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key. In practise - time is much more valuable than money. I suggest you read about us on the Internet, we are known as "Sodinokibi Ransomware". For example, this article: https://www.coveware.com/blog/2019/7/15/ransomware-amounts-rise-3x-in-q2-as-ryuk-amp-sodinokibi-spread Pay attention to that: "How Much Data Is Decrypted with a Ransomware Decryptor? In Q2 2019, victims who paid for a decryptor recovered 92% of their encrypted data. This statistic varied dramatically depending on the ransomware type. For example, Ryuk ransomware has a relatively low data recovery rate, at ~ 87%, while Sodinokibi was close to 100%. " Now you have a guarantee that your files will be returned 100 %. [+] How to get access on website? [+] You have two ways: 1) [Recommended] Using a TOR browser! a) Download and install TOR browser from this site: https://torproject.org/ b) Open our website: http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/35DF19EC59F3696C 2) If TOR blocked in your country, try to use VPN! But you can use our secondary website. For this: a) Open your any browser (Chrome, Firefox, Opera, IE, Edge) b) Open our secondary website: http://decryptor.cc/35DF19EC59F3696C Warning: secondary website can be blocked, thats why first variant much better and more available. If you have problem with connect, use strictly TOR version 8.5.5 link for download TOR version 8.5.5 here: https://filehippo.com/download_tor_browser_for_windows/ When you open our website, put the following data in the input form: Key: 46zs2yhAVyrh1TxUI1PjnFUm0lQ/NSXIHlmbEy/etMaXSbn7tEgz5NrB24sgg5CA kvbzzspUufuijP9kePIDGCs7u8PUVI0dAelYO8iAEYocpYoxNZE9kgRHkagNcI1W wefF4QODV7w3hQZLEe2uV1HNVunY4caDT8NnzlhuUY9VGG4CwwZ+fO+T2Ht1JgXs v0Sn7Es3gBz8o8RETZcbP3O0p8orLb6UAYSbfHr6USMEV/AMmhzLIRCFuwCwFOrt 8gcrZxcOXqQvSmFmvqNUY5BKBVrip6kcIyJ0P7omn2EALSkmg0VnHilJr1klk3mX CfwtRSkAfzOAMLQIiaxnfPV9wpw+BLNWY11bLmKdYQ58v2GopeiLYqq/RTtQkptR asYkBakHfVAEk9l9ubu1q9YtUXgyTAlTlPY2Wt4XdQrxhATh4SiWiMzJneQvRmlp ayFCUwErpYcpiY97euLTyCZrLV4eGPX3YhUEBjbnaY3VI9BFWjuB+Ron48T86FF3 sGjbiiy6serm19h+VSxWJNawf6xpxeSUPpapEaIoKFL1ypyREhPTiB+7lD1NL6bS yOfpc1317OsQFNEhR3KNmWmErJmY1mwt9vaMaqk3hh9WY1a00lsVyzN+DQ0hi2Up LTZlnJ7QoH4PhpjYV6poWF/9SSroWRsJJT/4GGbJnLleMCliHJ1vjMdJ1QPA4XvV J9MGoA3sqOp0Be8ntVFl6RPNU4RpWtitAVKcOSsiK0y+7pgzwmM6Uy3mJUJSr93M Mtqt5G9XgffuMF+htcKtm0PqdnQwAZojHIGP777kETR8xq8MqPYyx4/+LveRGbhn C0gRq/4rIxVvN4yNub5Bhf/s9vbfREYXg9f5n49WjLpOuiHCfjcJlLBk17Vk8FUH mTaeWswceoMHUMnILFjE6C8eXO4tLdIAnAfECdiVTPoPDw3FBps+4Xeoa/lrxBVv 2gODtvckhdJgK95ZoDNwwwop6uZX3G7ccHRFfQdP4ZfvVpR35ajZxJv1iDARacL9 oBnuTWsJyUMERsO4qa90xAXc1mZyE/a1uDTzRHfhIHMR87r4efKSYPbPC6/enic3 8lwNEt/DRJPp4D2rSWteX/qX6N3eaXVCpnV2Q0vOvNegWbQN/+szzeHtPcMPdh7o ynuUY1n8Q9Jg4UkrPYpI3aF1TW9LRAbfqdbymLqrQUE/iEMkTuIlR62g6Yuy/ZXX A/oCLwpNTD3Qz2tGGHYQlVSVs0AibKiiDg5bqckzelpDMgAQ+KWM8KktvDPx/D3K jcnlnBsDK8u014xr8siVdw== Extension name: 83fv42 ----------------------------------------------------------------------------------------- !!! DANGER !!! DONT try to change files by yourself, DONT use any third party software for restoring your data or antivirus solutions - its may entail damge of the private key and, as result, The Loss all data. !!! !!! !!! ONE MORE TIME: Its in your interests to get your files back. From our side, we (the best specialists) make everything for restoring, but please should not interfere. !!! !!! !!!
URLs

https://www.coveware.com/blog/2019/7/15/ransomware-amounts-rise-3x-in-q2-as-ryuk-amp-sodinokibi-spread

http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/35DF19EC59F3696C

http://decryptor.cc/35DF19EC59F3696C

https://filehippo.com/download_tor_browser_for_windows/

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

  • Modifies extensions of user files 17 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Enumerates connected drives 3 TTPs 25 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4967be7b7244b915b4ac0685327741d1de02aa745a9c5017d30be39396356b19.exe
    "C:\Users\Admin\AppData\Local\Temp\4967be7b7244b915b4ac0685327741d1de02aa745a9c5017d30be39396356b19.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3804

Network

MITRE ATT&CK Enterprise v6

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Downloads