Overview

overview

10

Static

static

53215004ba...9f.exe

windows7_x64

10

53215004ba...9f.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    166s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 07:21

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General

  • Target

    53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f.exe

  • Size

    170KB

  • MD5

    e099b46a11f962688a9f45c0da068045

  • SHA1

    6f525bfb102285515e32345e6f0870f508b55fbe

  • SHA256

    53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f

  • SHA512

    341aaef008e6ee245e7ba1e5c3315b88cf11fe05bce880637cbec2a585c1b2e36408bd0ec6d202b25ecfb1d9d81e13d4826bb5c7fdb401473f9b624f40213bdb

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 WayneEvenson@protonmail.com or WayneEvenson@tutanota.com BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Emails

WayneEvenson@protonmail.com

WayneEvenson@tutanota.com
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\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1320
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1224
    • C:\Users\Admin\AppData\Local\Temp\53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f.exe
      "C:\Users\Admin\AppData\Local\Temp\53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1636
      • 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\53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1416
        • 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\53215004babd14a61e9ad4c9115fcd7c7d8385e6555bc280d8be163c6aeee39f.exe" /f
          3⤵
          • Adds Run key to start application
          PID:668

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1224-56-0x000000013F930000-0x000000013FCBE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1224-57-0x000000013F930000-0x000000013FCBE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1636-55-0x000007FEFC2D1000-0x000007FEFC2D3000-memory.dmp
      Filesize

      8KB

      Download