Overview

overview

10

Static

static

478990938b...50.exe

windows7_x64

10

478990938b...50.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    163s
  • max time network
    145s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 07:47

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General

  • Target

    478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350.exe

  • Size

    149KB

  • MD5

    5aeb82aba635623d8f0ff2536e0d1df2

  • SHA1

    bebe20f6aa1a0645575c67193de244976386536f

  • SHA256

    478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350

  • SHA512

    5c3339617780faaabae21efae457c6275345ade7b1c5d9f199f37fd23a107f2b92d34e7fe6f8d2baed8ddbb38a356e9416426bbe27f205b4bb2f9269593f3e37

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: 14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb Ryuk No system is safe
Wallets

14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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 8 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    PID:1144
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1232
    • C:\Users\Admin\AppData\Local\Temp\478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350.exe
      "C:\Users\Admin\AppData\Local\Temp\478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1924
      • 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\478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2040
        • 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\478990938b7cae1f3266d232993c12265e8c8dcd4382ea381cf1e6cf6d21b350.exe" /f
          3⤵
          • Adds Run key to start application
          PID:476

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1144-56-0x000000013F6C0000-0x000000013FA48000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1144-58-0x000000013F6C0000-0x000000013FA48000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1924-55-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

      Filesize

      8KB

      Download