Overview

overview

10

Static

static

0c51ca0477...1e.exe

windows7_x64

10

0c51ca0477...1e.exe

windows10-2004_x64

8

Analysis

  • max time kernel
    164s
  • max time network
    142s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19-02-2022 08:21

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General

  • Target

    0c51ca0477a2a23eede0757f49f07891c15fe977bde5f293d05ddbce43c9531e.exe

  • Size

    386KB

  • MD5

    7bd387176c3b768d4c4c5522072f3753

  • SHA1

    0ec05c75a232a16babe9e7d77d1f9165afb1aac4

  • SHA256

    0c51ca0477a2a23eede0757f49f07891c15fe977bde5f293d05ddbce43c9531e

  • SHA512

    dd9584273adbbbf9f6c8d951bb00b2930a89dd3db2cacdf8f24c7ce57b31e62469da62219c8fc0d3b366add12b3ca32b82a3e74e1463293b1159fd188da46024

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
  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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 12 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1392
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1296
    • C:\Users\Admin\AppData\Local\Temp\0c51ca0477a2a23eede0757f49f07891c15fe977bde5f293d05ddbce43c9531e.exe
      "C:\Users\Admin\AppData\Local\Temp\0c51ca0477a2a23eede0757f49f07891c15fe977bde5f293d05ddbce43c9531e.exe"
      1⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:980
      • C:\users\Public\YnOXc.exe
        "C:\users\Public\YnOXc.exe" C:\Users\Admin\AppData\Local\Temp\0c51ca0477a2a23eede0757f49f07891c15fe977bde5f293d05ddbce43c9531e.exe
        2⤵
        • Executes dropped EXE
        • Deletes itself
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:596
        • 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\Public\YnOXc.exe" /f
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:484
          • C:\Windows\system32\reg.exe
            REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\YnOXc.exe" /f
            4⤵
            • Adds Run key to start application
            PID:112

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/596-57-0x000007FEFB931000-0x000007FEFB933000-memory.dmp

      Filesize

      8KB

      Download

    • memory/980-54-0x0000000075F21000-0x0000000075F23000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1296-58-0x000000013F660000-0x000000013F9EE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1296-59-0x000000013F660000-0x000000013F9EE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1392-61-0x000000013F660000-0x000000013F9EE000-memory.dmp

      Filesize

      3.6MB

      Download