Overview

overview

10

Static

static

d7953e6c5c...0e.exe

windows7_x64

10

d7953e6c5c...0e.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    191s
  • max time network
    36s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 01:58

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General

  • Target

    d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e.exe

  • Size

    170KB

  • MD5

    69693141762821147d2e79b9d4c76354

  • SHA1

    ffe7d03662ebe8ff71f96f3f5994e17ca8129b9b

  • SHA256

    d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e

  • SHA512

    503b604ffa13d67265513db6bef6b7e263bd10969a6002e5838798fa4ace12ce1963ddc0844412e252b5346d06b05ba48b70e52cc9aa580379d70a2e3517beff

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:1348
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1244
    • C:\Users\Admin\AppData\Local\Temp\d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e.exe
      "C:\Users\Admin\AppData\Local\Temp\d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1656
      • 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\d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1296
        • 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\d7953e6c5c6cca21de1b6db5639e70582ead7f02d4e5b3546d2ff285e283b50e.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1800

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1244-55-0x000000013FD30000-0x00000001400BE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1244-56-0x000000013FD30000-0x00000001400BE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1348-58-0x000000013FD30000-0x00000001400BE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1656-54-0x000007FEFC501000-0x000007FEFC503000-memory.dmp
      Filesize

      8KB

      Download