Overview

overview

10

Static

static

f14c1098c7...37.exe

windows7_x64

10

f14c1098c7...37.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    169s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 00:28

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General

  • Target

    f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137.exe

  • Size

    170KB

  • MD5

    59b2dcab18d7209f127b8d06dc721290

  • SHA1

    ff5cba050041cb1e4458ca786fd116416fe30c7a

  • SHA256

    f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137

  • SHA512

    40274c1d782d0abad5942a6ad4a2bfdeda33227570fe906851a01d2136f08e8e544d8592033352414ba18defb995269b39b758e5c9f700fe61b2cb82f1b0f49f

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:1256
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1344
    • C:\Users\Admin\AppData\Local\Temp\f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137.exe
      "C:\Users\Admin\AppData\Local\Temp\f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1952
      • 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\f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:520
        • 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\f14c1098c7da73aa58e4476add20c1d554bfa127b03af18f4da4f6259dd30137.exe" /f
          3⤵
          • Adds Run key to start application
          PID:572

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1256-56-0x000000013F8D0000-0x000000013FC5E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1256-57-0x000000013F8D0000-0x000000013FC5E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1952-55-0x000007FEFB631000-0x000007FEFB633000-memory.dmp

      Filesize

      8KB

      Download