Overview

overview

10

Static

static

65160fc5b5...97.exe

windows7_x64

10

65160fc5b5...97.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    170s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 06:29

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General

  • Target

    65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97.exe

  • Size

    147KB

  • MD5

    cb2ef6d62007213c431a87022d18716e

  • SHA1

    5ce55bf28895f4f937326d50b316fbf40c26b506

  • SHA256

    65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97

  • SHA512

    23069fea1effda102ccfe22e8cc998bf5ca6dbb19a13b565964cf0d9d741f9059e14eb4c09d944c29c84c3a8b258c30764c68820d2a3223d34f039e7920fb1f0

Score
10/10
ryukpersistenceransomware

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: 19AE1YN6Jo8ognKdJQ3xeQQL1mSZyX16op Ryuk No system is safe
Wallets

19AE1YN6Jo8ognKdJQ3xeQQL1mSZyX16op

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops file in Program Files directory
    PID:1116
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1172
    • C:\Users\Admin\AppData\Local\Temp\65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97.exe
      "C:\Users\Admin\AppData\Local\Temp\65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:480
      • 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\65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1680
        • 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\65160fc5b5542e6a1b6d6ea2194eb9d4545979bb31a632142195332044b42d97.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1160

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/480-55-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1116-56-0x000000013FFD0000-0x0000000140358000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1116-58-0x000000013FFD0000-0x0000000140358000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1172-59-0x000000013FFD0000-0x0000000140358000-memory.dmp

      Filesize

      3.5MB

      Download