Overview

overview

10

Static

static

318963e919...c8.exe

windows7_x64

10

318963e919...c8.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    163s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 08:43

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General

  • Target

    318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8.exe

  • Size

    146KB

  • MD5

    7a848ae6229c0d40c7ebe455ce9dd5f7

  • SHA1

    a3a7647fb25c6c037848546d143b8f968c4c6b82

  • SHA256

    318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8

  • SHA512

    0b7a22354354ecdc53678297bf10e7b721c41c701d21333b65fe063b18879e77d25be3d57f83590f875a513a747ed5f9a1a0f1e72b4119d159896bdec3437a50

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: 1Cyh35KqhhDewmXy63yp9ZMqBnAWe4oJRr Ryuk No system is safe
Wallets

1Cyh35KqhhDewmXy63yp9ZMqBnAWe4oJRr

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:1096
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1180
    • C:\Users\Admin\AppData\Local\Temp\318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8.exe
      "C:\Users\Admin\AppData\Local\Temp\318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1600
      • 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\318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2032
        • 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\318963e919790a5ced29f618ad9c1e25ec71c16b11a89674fcf390aa1fb776c8.exe" /f
          3⤵
          • Adds Run key to start application
          PID:560

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1096-55-0x000000013F160000-0x000000013F4E7000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1096-57-0x000000013F160000-0x000000013F4E7000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1180-58-0x000000013F160000-0x000000013F4E7000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1600-54-0x000007FEFC261000-0x000007FEFC263000-memory.dmp

      Filesize

      8KB

      Download