Analysis

  • max time kernel
    167s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19-02-2022 08:42

General

  • Target

    0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280.exe

  • Size

    154KB

  • MD5

    85dc3c9daa960c110dabe7d6f1f242e0

  • SHA1

    88b1879ca52863a5acba40e4a895cae96dff2764

  • SHA256

    0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280

  • SHA512

    19f87a621c305a85b2aebe6f09ae39e74fe4f0d7d1ac63aef33d3eb87c6a283c01870b23f69ba41788a95dfd117db6adc9e1ac0def2570b5615cef3b1fc2c6c7

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note
Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation. More than a year ago, world experts recognized the impossibility of deciphering by any means except the original decoder. No decryption software is available in the public. Antiviruse companies, researchers, IT specialists, and no other persons cant help you encrypt the data. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT DELETE readme files. To confirm our honest intentions.Send 2 different random files and you will get it decrypted. It can be from different computers on your network to be sure that one key decrypts everything. 2 files we unlock for free To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb Ryuk No system is safe
Wallets

14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1232
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops desktop.ini file(s)
      • Drops file in Program Files directory
      PID:1144
    • C:\Users\Admin\AppData\Local\Temp\0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280.exe
      "C:\Users\Admin\AppData\Local\Temp\0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1900
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1096
        • C:\Windows\system32\reg.exe
          REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\0563e8dd01ea8d2cae1c397ccc2b7f631e0e71b901a78cb120b9cbe746a03280.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1512

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1096-60-0x000000013F790000-0x000000013FB19000-memory.dmp

      Filesize

      3.5MB

    • memory/1144-56-0x000000013F790000-0x000000013FB19000-memory.dmp

      Filesize

      3.5MB

    • memory/1144-58-0x000000013F790000-0x000000013FB19000-memory.dmp

      Filesize

      3.5MB

    • memory/1900-55-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

      Filesize

      8KB