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Overview

overview

10

Static

static

62c8958fc7...52.exe

windows7_x64

10

62c8958fc7...52.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    192s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/02/2022, 06:35

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General

  • Target

    62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe

  • Size

    170KB

  • MD5

    0b7cd7bb98886561c8115f24b5bcd387

  • SHA1

    77a36353a0998388e56e849f6c05e4d7ca8c81e7

  • SHA256

    62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152

  • SHA512

    3812e6817c2f651c3f0434972eb223474a902a019acccb6143fa495f4d4b7a4a768866da2bb53f4c071792ca6d4d2e500c4e9a910d61999f9d549f1a9bfb3366

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 8 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1312
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1208
    • C:\Users\Admin\AppData\Local\Temp\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe
      "C:\Users\Admin\AppData\Local\Temp\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:524
      • 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\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1204
        • 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\62c8958fc79972b987a313db8c94d9db5d11a5178234bce328ebe56dce330152.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1440

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/524-54-0x000007FEFB591000-0x000007FEFB593000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1208-55-0x000000013F1E0000-0x000000013F56E000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1208-57-0x000000013F1E0000-0x000000013F56E000-memory.dmp

      Filesize

      3.6MB

      Download