Overview

overview

10

Static

static

1659503da5...92.exe

windows7_x64

10

1659503da5...92.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    175s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 09:55

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General

  • Target

    1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992.exe

  • Size

    155KB

  • MD5

    c5609ab395ee733f889c28d9f93f2af3

  • SHA1

    ee4099fc9381c45aaa32505521a8dbc1daf3ff78

  • SHA256

    1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992

  • SHA512

    39fa80bc077b24b1f8814b19722613b472343dded1fd14b1231e11a6b03c2ae477db2f787a4f2d72b39b611c2070ad833068e2e01fd18e9cab257414e2ce1caf

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: 1CN2iQbBikFK9jM34Nb3WLx5DCenQLnbXp Ryuk
Wallets

1CN2iQbBikFK9jM34Nb3WLx5DCenQLnbXp

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 8 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops file in Program Files directory
    PID:1140
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1252
    • C:\Users\Admin\AppData\Local\Temp\1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992.exe
      "C:\Users\Admin\AppData\Local\Temp\1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1756
      • 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\1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:524
        • 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\1659503da5d0318c6025ea87b125b4917d53f4f666461b42d7cc2552ac2b3992.exe" /f
          3⤵
          • Adds Run key to start application
          PID:240

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1140-55-0x000000013F520000-0x000000013F8AA000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1140-57-0x000000013F520000-0x000000013F8AA000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1756-54-0x000007FEFC511000-0x000007FEFC513000-memory.dmp

      Filesize

      8KB

      Download