Analysis

  • max time kernel
    166s
  • max time network
    155s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    24/01/2022, 00:53

General

  • Target
    dd783dd02825f7bbac3faef9e2b07da5320394774f93f35c614465d47054bcc6.exe
  • Size 200KB
  • Sample220124-a8nkkahack
  • SHA256 dd783dd02825f7bbac3faef9e2b07da5320394774f93f35c614465d47054bcc6
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • C:\tsyoj-readme.txt

  • sodinokibi

Ransom Note
  • ---=== Welcome. Again. ===--- [+] Whats Happen? [+] Your files are encrypted, and currently unavailable. You can check it: all files on you computer has expansion tsyoj. 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. [+] 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/C52D6861C4A0F630 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/C52D6861C4A0F630 Warning: secondary website can be blocked, thats why first variant much better and more available. When you open our website, put the following data in the input form: Key: VvpbDMvkCXpzevTmY/hOfplVkMGwpWqyWf0dKMP2A3/fN64pfZlTv7/05+23XA3/ u+XNoy43b/F6ZwXXTH8WqnZsXw4j7NFIyeNHMHeSThOJOub1gq44HpJA/lNbILns 689/P0lmxv9Qhx+8uvjo0vEBGeOH2nNQUSh6D+M+tgR7IWQwx5Ye1ibFoW8qtgaZ 5oaQ2w9auQdg+y4b2BH6UaDTsPr/05tAkyfDpUrXPMGXaFqsgNt69B+sRY+oeAeo GjGygzW0XBDEcVYmn/9/Bgaq8mHYKPG3bGG6XFUHdDao4kepN91+mR24iGFdlt8/ g0NL35mcZY1NsQhR/O5/u4ZDKvMD6Ad+x389WmHZfW9lHm/YK8xz8BBPnYLDHCF8 65vDBJpd1Xz9R6EtkxoQoaIJE+A6FLvJRtKHFsrKZKbIUOYBcnUFdYQfxB6LA8vY evv5p1bz3ieEQsw2/7tUA9ajy9pT7lX74LfhJn/mQsMMJkyByQ/jLNCgccnMXNiz lWyyJT2xCa5Rj5Qrh7xRUa+bbfCn7HXkSAmmrcbrO0DJ+mxg+SETU8V960D79N7h Cqg5SfbxxrBSJqZWGuFznQsE4V80nlp2sqVRzpsGdV7K0a2f7QwohM7ArTno1Jnw jpAwpdTw8RM4MrhgBKAcv36HaQdVtPS0RHK0uT/ahCQ1l5qyurtczMSTNpi0urXV h+S5IkRsRqHOzh5Qeqoop4gaZ5USSlgMbPSMFfwmYM3D/RD30mTxbDMi8uq/0u9o wvosjmOJvYCh/Zb0VVz6QIW7IL9nLV2JIrGo+88laFFqndXwy4Ps4mE3LjuQIi8n YjvfCg0+C/E2sMh9jASCle6VdHGwIQuIbhwdONIiVJr90UPM0sOpPimI4w9xaxaw NlRYCLwEuAGuN83a+t5tYp8aB8s4qP4JmCo0O2WIXV0pefUUl93TO1/yWjtQWKOz 2pUvcXOQ/LqX/JrhIzd5IKns+D2zQXKnvV+beJwP8YC3+nCsn/jxNKwXuXK/xz9k KDj0DNkrdJmGIBh0dRnwXwxTG7v9BhMsvoqFQ5MqHo9TyyFmnNXOq1Opook4S80N yqLDBL82Lw6vD/LlLAstpqbNkUh11EeApy+5PbxHwpBh7FDWKn0j77x2VBbl136P 30InqqPM+FDf261uB57nVcUdDqfgh12tTgzpQ86pEW3O5WRmABnTIceX03la11Cy SCutQeGbwFjpWsiwqOZuwrn771RglWgqWe/B4t95Bc7uE0msvDf2XFc72Tej+eHR Am7O/MuZcruDGv0xuig= Extension name: tsyoj ----------------------------------------------------------------------------------------- !!! 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
  • http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/C52D6861C4A0F630

  • http://decryptor.cc/C52D6861C4A0F630

Signatures

  • Sodin,Sodinokibi,REvil

    Ransomware with advanced anti-analysis and privilege escalation functionality.

  • Modifies extensions of user files 2 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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 Program Files directory 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dd783dd02825f7bbac3faef9e2b07da5320394774f93f35c614465d47054bcc6.exe
    "C:\Users\Admin\AppData\Local\Temp\dd783dd02825f7bbac3faef9e2b07da5320394774f93f35c614465d47054bcc6.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4144
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4480
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:4220
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1212

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/4480-120-0x00000244F1A50000-0x00000244F1A72000-memory.dmp

          memory/4480-124-0x00000244F19D3000-0x00000244F19D5000-memory.dmp

          memory/4480-123-0x00000244F19D0000-0x00000244F19D2000-memory.dmp

          memory/4480-125-0x00000244F2220000-0x00000244F2296000-memory.dmp

          memory/4480-136-0x00000244F19D6000-0x00000244F19D8000-memory.dmp