Analysis

  • max time kernel
    152s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    05-03-2022 16:44

General

  • Target

    105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe

  • Size

    117KB

  • MD5

    bcb8226cbf5e6272d241776cc902f6f9

  • SHA1

    50ec47ab1fe53ac34ab07fc41c960c237c264198

  • SHA256

    105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99

  • SHA512

    18d90a320fb2365df57de93922eb8ba4b46623cd3dce60fb8df5ab2dbebf24b0f01e1302e2f4c511c12bd6836debd9e2debfdc570f4f95186bf3fec0c35688f8

Score
10/10

Malware Config

Extracted

Path

C:\b48lfv2-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 b48lfv2. 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/0524F6DAAA60AB39 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/0524F6DAAA60AB39 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: seROqLtiQ7rG4qcgSOdE4wTf4HLbGJH28MR9yZv1T/oXEg1rbX4pixLevCrM9WQx 1aVVwVyjNQluRo/u1uOhwVR3DNX7zRcB+2PiK1IwEK6yDVTriRkE+sYNa26GNfIF EA5tB8sOt+y/D75BY50eLIb3MgCTdaOM/bza8JURs2/8gTj/4+bE/xzFK6yeD20g sxH/l1f80BSmJQHbvhVe0OOfpsktVv3TYXIQSnshegO1GOHz4Ic4XtZqXuCiFNTX zux78DudmAdvuBZz7JtSUzIvZqW3djIleyS0TbViRrR45I69Nt9oMKRZt5FPntmC 7aKsk3fv8BGVErOKPkqi0VAw3L69nBcorzqgZcYRYWWyskOa7lj45UCOcBmQCFnY z+rLpXWFKbH8CQLn8f9FCBQhwQrEPgNsgH0kNJlY12z/9mRth5LczGl4T0IyJGkV EK3W01LMO/MbDabRp03iLo7PTcR/QMu1VgKIH0K9Wt+vzHY7x5DBQzXb4+8m/2Yc hWTZflDlBWChxgUWUY9YPICWe9bN0ER6XoGKa18gRHWagm3wccSpJnZzgMQtf1WS quzDf6sBhLo2fB9dMVgk+rBt0wftDe+2YwHznsJCWXpRT7TZJ2QfaqG1jF3GgFjg lzxb/MFpntCmbrB6eSUQpTqEixtIPUiOgxkLc74ikbVHzxGPL4MToGrLqzrhNtSL Ou6EIjXWaLQGFYci3iTLiIhabQHeDRkpa4DGwLF2ibttuRcYCEbEj522KV0Hjrab Vsml8+r6qk/akKsUhmOyF0hiGiixWJrkPcua5bJh6vkGHe/y9YrtcCHe0QPejPDx 9Qf54L/KRISaiXg0sRYHe/QBWs29GFCy5aNHXuMJhRxNHogAB2OMMHBJjJGTc+LI uTtmejwh35RlZOOTZ7J0cV7h8RoM7UTHu2URCJO9oH6cLmlKGfkF16soXB5moVNZ 3+gcM8m2zp/QkOOdnvsXEGC3KGOa7LLhA9U0qiOfOuyZIZ5UqiY/OLpgkkfiCAn3 3IpZbxH7fp7vYY+w/gHn8Ulg9Lg6yaJ1PgClOSuFTeH1VFUPpYCLiyBFLb+G/NuP AkMzhP0H/LRjDd3M4NpUe6dDssVvOynTL4n8ymZ6Kzto75vtKnS/o+dla3dWzykG w0598FRw8qVTFAMGE7bO/Ls94BSBlFtrTRRWsViiW3hhZ61b3fDcrdyPmHSJPaCL JY8vJWmgecY95eIIC0XTXsYKB0ju1zax2VAYrrTPt0jzzIhbWXdZeFdKtLV43wIM diBr/xWTSlLjv5oHzC7b6FBlCNuqzlTc9MqIiXKb9ls= Extension name: b48lfv2 ----------------------------------------------------------------------------------------- postscript: In case you want to independently decrypt your servers, we will be forced to put the databases of your companies in the public domain. MDF files: DB_UTILITY LeasePlus LPSecurity LTShared PaperVision !!! 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/0524F6DAAA60AB39

http://decryptor.cc/0524F6DAAA60AB39

https://filehippo.com/download_tor_browser_for_windows/

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

  • Modifies extensions of user files 7 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.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 29 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe
    "C:\Users\Admin\AppData\Local\Temp\105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1244
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:968
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:400

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    Query Registry

    1
    T1012

    Peripheral Device Discovery

    1
    T1120

    System Information Discovery

    1
    T1082

    Impact

    Defacement

    1
    T1491

    Replay Monitor

    Loading Replay Monitor...

    Downloads