Overview

overview

10

Static

static

17ad1d64ba...aa.exe

windows7_x64

10

17ad1d64ba...aa.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    161s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 09:52

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General

  • Target

    17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa.exe

  • Size

    170KB

  • MD5

    83ca718ae747c80564e1a888051301a5

  • SHA1

    487f7828ea059d5730aafbfa54b8f86b2e6f321c

  • SHA256

    17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa

  • SHA512

    ad3b69ff2407cba0ae28d5537f98a0fdd2143705f0ab8fd9b9be342721dfb846252653cc0dd56038b6a32bc2979c43dd83ad87644e616c61bfed3b58c3f24a1f

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\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops file in Program Files directory
    PID:1232
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1332
    • C:\Users\Admin\AppData\Local\Temp\17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa.exe
      "C:\Users\Admin\AppData\Local\Temp\17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1288
      • 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\17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:828
        • 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\17ad1d64baf39c16612ac1c056fc9c23b73d180451bcd8c170fce0861129afaa.exe" /f
          3⤵
          • Adds Run key to start application
          PID:556

    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

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    Downloads

    • memory/1232-56-0x000000013FD90000-0x000000014011E000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1232-57-0x000000013FD90000-0x000000014011E000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1288-55-0x000007FEFBCB1000-0x000007FEFBCB3000-memory.dmp
      Filesize

      8KB

      Download