Overview

overview

10

Static

static

10

661059daec...83.exe

windows7_x64

10

661059daec...83.exe

windows10_x64

10

Analysis

  • max time kernel
    149s
  • max time network
    182s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    24-01-2022 01:55

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General

  • Target

    661059daeca736f9019e16759fbc50941ad3eda1a4297a68e3ce75e687eff983.exe

  • Size

    166KB

  • MD5

    765575f3048b6b31682c0f04dc481ec5

  • SHA1

    fe364351ef90e676d6d5918a75257641454c1161

  • SHA256

    661059daeca736f9019e16759fbc50941ad3eda1a4297a68e3ce75e687eff983

  • SHA512

    5c5793cd2ba89951ba37d4637093390d77de5539d2038bc0effae337fce169974c616fbf6933df15459db96ac6b04378692b47198b21b6b5df0760d91527d3be

Score
10/10
ryukransomware

Malware Config

Extracted

Path

C:\7nx4mm5-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 7nx4mm5. 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/B69EF8CEFFF7AED1 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/B69EF8CEFFF7AED1 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: 8Xb+USQF4vTNX0mT5e5DQNQzE/eyuizA/gBWIF1VSBl+ZCOBSlN8fRx3KcgtBbB2 sUZodqsbFUd+S9/RlbdlhzZSguB7R4AdhyBQi/fhywVGZDGDefBIEpF4qKbwElx7 NkELBipuBa2o5voPwTvT0sUDhvaNpQeYxJLOBikz3hE3BhOjxAQUo8Amkd0Ke3au y6tbPVTGTPaV3W166xVO0a3HgUMnanmdp8+5ySAk4Xt4EE5g2TG2UDUhFUAKsTm9 qONX4lYbaK1Ilt7D/2kSktsbflo23oG/CHjSvHWXDJQ6jQ+w+pSN0AMW7npvMIpO SPbyjyVNBe4PxrmZmuEEjPgz82ZSU997yzytPP3MfjCNDo5UzKlJX7RnLi+Gh1fH rB+kntPhlCICH7Yid7UlrOs3ZsF7jDQLtp/fwF5JfLZhG7xjKyEhsUaE0+qvccbw alpCqUfcjibQdrsc1npZDkq0WivHgAuGm240oy0mUC6hWHE3hORD411uUk6Lor6L V3GTt0k3AvLh+j1W4aRdKZAPcDcD56nXW8vZDIqDgVRTv/3FooAN2dOkQxwUYqyT rieZ1OWVMjKktAhpFbXCMjJi+GV8Ju9lahbK7QdklJzLcc3igU8swVRt0sVOPodA y0ROcj3UHtvImyLwX8QU/hNy7EQZ0YfhSSsMayB9b5Pl+TduLzDdyf53WYzCGffm 6TpnZGTk+M8OBcMz/elxNrmlQZ7XYSZtk2qMuONhODl+JASyws13qiNnFu8dzr04 hXcdrYmq+SlkamBVIUJy+Ysxpmc41W4IcqPy5wqSCdZC1geba6ghC2e7/ibcduAR wOb4AqsoV4oWxmF0o7w4m+UqGuk8tIGgRh9V+53fafVbRxZzGyVo5WaZv5aHRTe/ wLaBrPceMXp961w98KY7uOlzvs8SnFEuXtLa3GCvDpXZ5GzK42VdgHNUJlSWzYff OfUR3gjM9QjKOfa8DphHHL72YyiGVYpxHIuIjugZ6JBI8K0uyrN97GI5q6es04hy VHOOHm0Kn0GmebPy5B3/9xKxjKFChEz5ynVn+Hq+c/RULzd7ENYCml2N/mT0Ut29 XNjYkAJEpW23e2tKuKIeSmFkrrf+uSs+gu62h3kF1IW0ZAxTwC3IojgJtfjaeGRa O4KB5Cx25geaPKG7kdVkpdRJgnxJ8Hpy3svPdm+7RvJATprHHDtyWGrbJEerNc9L +lssZMwwxbP5O9w1gf0FlR5yMXH+ORcrCyH0/95RfD8s6piPSctjFxT5Ytlqbehb Bppei5sHvxUUD4ETJEpWpqSz9+R7iSN+3jc= Extension name: 7nx4mm5 ----------------------------------------------------------------------------------------- !!! 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/B69EF8CEFFF7AED1

http://decryptor.cc/B69EF8CEFFF7AED1

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 11 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Enumerates connected drives 3 TTPs 25 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 39 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\661059daeca736f9019e16759fbc50941ad3eda1a4297a68e3ce75e687eff983.exe
    "C:\Users\Admin\AppData\Local\Temp\661059daeca736f9019e16759fbc50941ad3eda1a4297a68e3ce75e687eff983.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Drops file in System32 directory
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1308
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:564
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1120

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1308-55-0x000007FEFC2B1000-0x000007FEFC2B3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1308-57-0x0000000002910000-0x0000000002912000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1308-58-0x0000000002912000-0x0000000002914000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1308-59-0x0000000002914000-0x0000000002917000-memory.dmp

      Filesize

      12KB

      Download

    • memory/1308-56-0x000007FEF3680000-0x000007FEF41DD000-memory.dmp

      Filesize

      11.4MB

      Download

    • memory/1308-60-0x000000000291B000-0x000000000293A000-memory.dmp

      Filesize

      124KB

      Download

    • memory/1756-54-0x0000000076451000-0x0000000076453000-memory.dmp

      Filesize

      8KB

      Download