Overview

overview

10

Static

static

e1c85bc8a6...e8.exe

windows7_x64

10

e1c85bc8a6...e8.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    170s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 01:10

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General

  • Target

    e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8.exe

  • Size

    152KB

  • MD5

    de6969e4d9745875d1a7052210e87e71

  • SHA1

    6916a4b85b34517b2966c63140c2b782783bbed0

  • SHA256

    e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8

  • SHA512

    c9df738232cd55f8ecd867e9216e799254faa29b2ebd27def1b18721b4cc71f63b374fe5336894a7483569ef0139947cb54cfb712f95bced07991f6449197307

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: 1C8n86EEttnDjNKM9Tjm7QNVgwGBncQhDs Ryuk No system is safe
Wallets

1C8n86EEttnDjNKM9Tjm7QNVgwGBncQhDs

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:1120
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1180
    • C:\Users\Admin\AppData\Local\Temp\e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8.exe
      "C:\Users\Admin\AppData\Local\Temp\e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1760
      • 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\e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1860
        • 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\e1c85bc8a605ec9f81f45d5ff343b7283bcee0a4ee954539dd70e3cba1ae51e8.exe" /f
          3⤵
          • Adds Run key to start application
          PID:800

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1120-55-0x000000013FCB0000-0x0000000140039000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1120-57-0x000000013FCB0000-0x0000000140039000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1180-58-0x000000013FCB0000-0x0000000140039000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1760-54-0x000007FEFBAD1000-0x000007FEFBAD3000-memory.dmp

      Filesize

      8KB

      Download