Overview

overview

10

Static

static

414bfb0bb8...87.exe

windows7_x64

10

414bfb0bb8...87.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    172s
  • max time network
    24s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 08:04

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General

  • Target

    414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87.exe

  • Size

    170KB

  • MD5

    d4089e8c00e1346099de330df50b027a

  • SHA1

    c7726ace55949d59d845130313c17687407e5367

  • SHA256

    414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87

  • SHA512

    ad61c25e90acccf86dde8f99b496c3d857b235d143a5251b81e23e424e83bcabe89671e0c58fae0bbccba1f6640bd9f4decd6195b718da9399179745b93540c4

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:1124
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1224
    • C:\Users\Admin\AppData\Local\Temp\414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87.exe
      "C:\Users\Admin\AppData\Local\Temp\414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87.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\414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:832
        • 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\414bfb0bb83ad01da8f54cb858aae7ee37b6029cf529d6e6f89ee0f451edbd87.exe" /f
          3⤵
          • Adds Run key to start application
          PID:740

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1124-56-0x000000013FEC0000-0x000000014024E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1124-58-0x000000013FEC0000-0x000000014024E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1224-59-0x000000013FEC0000-0x000000014024E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1620-55-0x000007FEFC3A1000-0x000007FEFC3A3000-memory.dmp

      Filesize

      8KB

      Download