Overview

overview

10

Static

static

0058e795e9...3d.exe

windows7_x64

10

0058e795e9...3d.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    168s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19-02-2022 08:57

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General

  • Target

    0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d.exe

  • Size

    170KB

  • MD5

    c67b278a1c92b57c93b4b2e5bb2feae2

  • SHA1

    5c31aee33dcacca12c89208d51f5d63bff687707

  • SHA256

    0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d

  • SHA512

    6156b49fc0702fdd6db18fbc99231c5d6e061a9d0b5c7a8644540386ba399a2a00365c973ff8f1d5459d08c239283ed6c01ad46b58441eade4020f7fb965a29d

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\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1360
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1256
    • C:\Users\Admin\AppData\Local\Temp\0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d.exe
      "C:\Users\Admin\AppData\Local\Temp\0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1908
      • 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\0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2028
        • 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\0058e795e91f14f3adc60502c50acf16fc927362c65df5f5a341e69c0b83813d.exe" /f
          3⤵
          • Adds Run key to start application
          PID:564

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1256-56-0x000000013FDD0000-0x000000014015E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1256-58-0x000000013FDD0000-0x000000014015E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1908-55-0x000007FEFBE21000-0x000007FEFBE23000-memory.dmp

      Filesize

      8KB

      Download