Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 19:27

General

  • Target

    file.dll

  • Size

    164KB

  • MD5

    72945c9b41b3590dc518b14bad0a79ee

  • SHA1

    244e30fcd8982b78eaac65db21b177b632c1fb11

  • SHA256

    44bcefd86b7d36300eb2d77ba88f248cab5ecb9cfb0ec3e859e35ed519fa7795

  • SHA512

    2eca816b31f21afe4daadaed3ed2e891f9632ff5652ae6e6e2ebde7dee0f6b1ec3562af8ef98dd9fb769c8f372a8f527e6a22cb2686ac43bc49fd6f21081f06c

Malware Config

Extracted

Path

C:\syjz3-readme.txt

Family

sodinokibi

Ransom Note
---=== Welcome. Again. ===--- [+] Whats Happen? [+] Your files are encrypted, and currently unavailable. You can check it: all files on your system has extension syjz3. 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/02E833CAEF7EC0C2 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/02E833CAEF7EC0C2 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: gg10ZR0l1YJ3+A+uISoU7vim1tGfdJVolzfN2kpv3qwy6YobJwk8GnRl8LNbA7qF O+3n90pCThLDSW1nnhlOiFz8EUCZ0rq3uJ465Bsny5drFJ5jNgMHd53qAtrLhcSd tZYG0iMxsAdB87oRdGRWT2+VdgRmXT0uRdO4b0UPgvaMWBv1HHNj8PtdfYC3LTPN IRKEG68EAQ6FwHLmNiRTNrxxH0+ET1wLHw/3idvbMHWIV2Cxp2Xq1vxW6F/0wQ3C RVb0mGf+S9TlpCw/emMQHkftTRiBhMH+/uYGpqUleFUBmVCm2Nkm0VLFrb1NWvmy 2isOV3tm4eJd2LLOyvYYEQzX6An4hcaXsjroIqHoVj9eBMDSXpvzkxzrgr5sfauS guxxbbtMjA05oSIvvZ8OVpWiOulKavjO+IK5dOBYJzfXzJIqj7HTig0dg3tDwf2l H4K5RjiurLsFU+Xm9gmTacr6B7G+REqET0w8Twb3moIxTdRd/vFIA7+A54xB7jE/ 5CDHjEPgD03gTW7tBAdYNP+DRMv4brxKTxwn5phK4TVvytoVkM/ziIBvkJzT/RDy SXyozoHw+zTf0Yj3mjaRvu4LsVbFLi49YG4G1TICJtcGRKOKt2vmh/iIkKegU022 lFNtfV3OYzcejSBMqdTeHF9bJxNbF5waS4BGB+KnXmOAc2zo3DotyDncQ8IWKH0P /mrelPRYHZ/J50vbpb9xcEtOGIG8ldsAw49WcZWGbnrhFezFL2F+r+YdmcmtfuqA PZFLRNcrOT/PCFaxvp8CqFvtwf7lnr2EjnfMfboslUXJYpOm49ItLrMIMxkvSZfL 4zPk5kvY4WbAhsfqRvnXcj8pZpld+H0OukvgSqKWC84ow94AUUX4NcuuL6a8LlUO Xiv+VSpdWYiUhoM3P5oYIPEY32R8nDxzbOFBdvG5fesniFE7jUJ4CbRgWDIBqlK/ OQQ8B9M+ObS2uusVz8lMh5u4KINoP8PbGF/r2jAAWS1WiDmRhk8hAmEN0Fd044no fKugS9o8e7pxaKHnw+3pLLO8l3C7QDrE0X03zWOFLBe88wNCz2ZoUNhNooRfSrDr AKX5uFISWFjc5vRyWaSU099sd5IjLX+tOEDU1k5iacdeNMuINLSCA8wq ----------------------------------------------------------------------------------------- !!! 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/02E833CAEF7EC0C2

http://decryptor.cc/02E833CAEF7EC0C2

Signatures

  • Sodin,Sodinokibi,REvil

    Ransomware with advanced anti-analysis and privilege escalation functionality.

  • Blacklisted process makes network request 87 IoCs
  • Modifies extensions of user files 9 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.

  • Modifies service 2 TTPs 5 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Drops file in Program Files directory 34 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3636
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#1
      2⤵
      • Blacklisted process makes network request
      • Modifies extensions of user files
      • Enumerates connected drives
      • 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:3484
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2932
  • C:\Windows\system32\wbem\unsecapp.exe
    C:\Windows\system32\wbem\unsecapp.exe -Embedding
    1⤵
      PID:3136
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:1924

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Modify Existing Service

    1
    T1031

    Defense Evasion

    Modify Registry

    3
    T1112

    Install Root Certificate

    1
    T1130

    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

    • memory/2932-1-0x0000000000000000-mapping.dmp
    • memory/2932-2-0x00007FFE03B60000-0x00007FFE0454C000-memory.dmp
      Filesize

      9.9MB

    • memory/2932-3-0x000001AD60D80000-0x000001AD60D81000-memory.dmp
      Filesize

      4KB

    • memory/2932-4-0x000001AD7A350000-0x000001AD7A351000-memory.dmp
      Filesize

      4KB

    • memory/3484-0-0x0000000000000000-mapping.dmp