Overview

overview

10

Static

static

0573171442...12.exe

windows7_x64

10

0573171442...12.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    181s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19-02-2022 08:42

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General

  • Target

    05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012.exe

  • Size

    148KB

  • MD5

    ff13e065cd7fe469f4aac4fcdcd55359

  • SHA1

    b16de52db11a6cf5a60f3f6cde49a52a1370e9b4

  • SHA256

    05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012

  • SHA512

    f916e17a2cd09b617b9d660b6b8a021f759468c18df776674e48a171ef1615b7f3f545b5de1d9c70635a3a123a78fa55bc55a7e0ef05857c476bab0b633bb101

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 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. More than a year ago, world experts recognized the impossibility of deciphering by any means except the original decoder. No decryption software is available in the public. Antiviruse companies, researchers, IT specialists, and no other persons cant help you encrypt the data. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT DELETE readme files. To confirm our honest intentions.Send 2 different random files and you will get it decrypted. It can be from different computers on your network to be sure that one key decrypts everything. 2 files we unlock for free To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb Ryuk No system is safe
Wallets

14aJo5L9PTZhv8XX6qRPncbTXecb8Qohqb

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Suspicious use of NtCreateProcessExOtherParentProcess 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 3 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 49 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2964
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
      PID:2888
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2888 -s 1840
        2⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        PID:3188
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2716
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2716 -s 956
        2⤵
        • Program crash
        • Suspicious behavior: EnumeratesProcesses
        PID:4436
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2716 -s 956
        2⤵
        • Program crash
        PID:2460
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
      1⤵
        PID:2520
      • C:\Windows\system32\backgroundTaskHost.exe
        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
        1⤵
          PID:3220
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
          1⤵
            PID:3612
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
            • Modifies registry class
            PID:3948
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3360
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:2476
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3056
                • C:\Windows\system32\taskhostw.exe
                  taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                  1⤵
                    PID:2252
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k UnistackSvcGroup
                    1⤵
                      PID:2208
                    • C:\Windows\system32\sihost.exe
                      sihost.exe
                      1⤵
                      • Drops desktop.ini file(s)
                      • Drops file in Program Files directory
                      PID:2188
                    • C:\Users\Admin\AppData\Local\Temp\05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012.exe
                      "C:\Users\Admin\AppData\Local\Temp\05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012.exe"
                      1⤵
                      • Checks computer location settings
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of WriteProcessMemory
                      PID:3308
                      • 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\05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012.exe" /f
                        2⤵
                        • Suspicious use of WriteProcessMemory
                        PID:3440
                        • 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\05731714429349d9b4effbf0d1de415bc603c2c29803408f0cec4f02183d9012.exe" /f
                          3⤵
                          • Adds Run key to start application
                          PID:2080
                    • C:\Windows\system32\MusNotifyIcon.exe
                      %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
                      1⤵
                      • Checks processor information in registry
                      PID:2604
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 432 -p 2888 -ip 2888
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Suspicious use of WriteProcessMemory
                      PID:4452
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 420 -p 2716 -ip 2716
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Suspicious use of WriteProcessMemory
                      PID:4444
                    • C:\Windows\System32\svchost.exe
                      C:\Windows\System32\svchost.exe -k NetworkService -p
                      1⤵
                      • Drops file in Windows directory
                      • Modifies data under HKEY_USERS
                      PID:4500

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    • memory/2188-130-0x00007FF70A730000-0x00007FF70AAB7000-memory.dmp
                      Filesize

                      3.5MB

                      Download
                    • memory/2716-131-0x0000023E1B1D0000-0x0000023E1B1D8000-memory.dmp
                      Filesize

                      32KB

                      Download
                    • memory/2716-132-0x0000023E1B1C0000-0x0000023E1B1C1000-memory.dmp
                      Filesize

                      4KB

                      Download
                    • memory/2716-133-0x0000023E1B1D0000-0x0000023E1B1D8000-memory.dmp
                      Filesize

                      32KB

                      Download
                    • memory/2716-134-0x0000023E1AFC0000-0x0000023E1AFC8000-memory.dmp
                      Filesize

                      32KB

                      Download
                    • memory/2716-135-0x0000023E1AD80000-0x0000023E1AD81000-memory.dmp
                      Filesize

                      4KB

                      Download