Overview

overview

10

Static

static

899d401abf...d9.exe

windows7_x64

10

899d401abf...d9.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    167s
  • max time network
    40s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 04:53

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9.exe

  • Size

    170KB

  • MD5

    240c65966ac7c6f71a2b98e951cb57cb

  • SHA1

    eba0ad0aa3b10d64882425bc2f11068b51ab5251

  • SHA256

    899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9

  • SHA512

    d75fedf7a963213a39ca392dcd026d02fa289148473f1862ec38973f8604b34aa384fd538ce9741f0c32ef222eeedc63b5f138ae31f67edc9dd5f50702803c5f

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:1240
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1328
    • C:\Users\Admin\AppData\Local\Temp\899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9.exe
      "C:\Users\Admin\AppData\Local\Temp\899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1452
      • 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\899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9.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\899d401abf00b5851fcb30e0d0edbdfbfee92d98bfd9acf77577d2f19b9c25d9.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1232

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1240-55-0x000000013FD80000-0x000000014010E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1240-56-0x000000013FD80000-0x000000014010E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1452-54-0x000007FEFBC21000-0x000007FEFBC23000-memory.dmp

      Filesize

      8KB

      Download