Overview

overview

10

Static

static

310da667cf...f0.exe

windows7_x64

10

310da667cf...f0.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    180s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 08:44

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General

  • Target

    310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0.exe

  • Size

    170KB

  • MD5

    af1f77eedf16f8a00fa500e0f8dbedbe

  • SHA1

    67b3d0c7013a9ccee08e948a82dde6d0e8b01828

  • SHA256

    310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0

  • SHA512

    0fcf486b2acaa0c71e123871cac423feb14c100c6c81d76a3b5ebbe6014d230749e109c583f62ea0287c29b810d957d7544b5b9761f0fa1408e4e775307e5aeb

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 or deleted or backup disks were formatted. 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 No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

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:1216
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1308
    • C:\Users\Admin\AppData\Local\Temp\310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0.exe
      "C:\Users\Admin\AppData\Local\Temp\310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1620
      • 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\310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:780
        • 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\310da667cf387ecfe5d24730104fefbd3f9478c786db59c8ee7a39c1265e8af0.exe" /f
          3⤵
          • Adds Run key to start application
          PID:860

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1216-55-0x000000013FC70000-0x000000013FFFE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1216-57-0x000000013FC70000-0x000000013FFFE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1620-54-0x000007FEFB711000-0x000007FEFB713000-memory.dmp

      Filesize

      8KB

      Download