Overview

overview

10

Static

static

0280ccc8d6...a4.exe

windows7_x64

10

0280ccc8d6...a4.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    175s
  • max time network
    194s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19-02-2022 08:52

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General

  • Target

    0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4.exe

  • Size

    170KB

  • MD5

    b9d73fa0261bb6adaa2cb22f348518f0

  • SHA1

    d52e7a4cb8ccad688572a8e5d38b43a0e38e3bc3

  • SHA256

    0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4

  • SHA512

    58e3f79e6de19df40b0992aa108e4022979e1c7b2be26e3dced26261c6ea800b89f1c00ac6e67340b4092cf3ada4a6c22c2aeb69eddba7838339a8c4e3799ff4

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
  • 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 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 1 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 22 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:2956
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
      PID:2892
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2712
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 2712 -s 712
        2⤵
        • Program crash
        PID:1472
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
      1⤵
        PID:2512
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3472
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
          • Modifies registry class
          PID:3360
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
          1⤵
            PID:3024
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:2616
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3036
              • C:\Windows\system32\taskhostw.exe
                taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                1⤵
                  PID:2284
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k UnistackSvcGroup
                  1⤵
                    PID:2228
                  • C:\Windows\system32\sihost.exe
                    sihost.exe
                    1⤵
                    • Drops file in Program Files directory
                    • Modifies registry class
                    PID:2208
                  • C:\Users\Admin\AppData\Local\Temp\0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4.exe
                    "C:\Users\Admin\AppData\Local\Temp\0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4.exe"
                    1⤵
                    • Checks computer location settings
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of WriteProcessMemory
                    PID:2132
                    • 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\0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4.exe" /f
                      2⤵
                      • Suspicious use of WriteProcessMemory
                      PID:1752
                      • C:\Windows\System32\Conhost.exe
                        \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                        3⤵
                          PID:3208
                        • 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\0280ccc8d6dbb14d79adf375fa386a534cd74b40c684ed47db0d2e4f659e4da4.exe" /f
                          3⤵
                          • Adds Run key to start application
                          PID:2980
                    • C:\Windows\system32\MusNotifyIcon.exe
                      %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
                      1⤵
                      • Checks processor information in registry
                      PID:3564
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                      • Modifies registry class
                      • Suspicious use of SetWindowsHookEx
                      PID:3280
                    • 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:4472

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

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                    Downloads

                    • memory/2208-130-0x00007FF7B7260000-0x00007FF7B75EE000-memory.dmp

                      Filesize

                      3.6MB

                      Download

                    • memory/2284-131-0x00007FF7B7260000-0x00007FF7B75EE000-memory.dmp

                      Filesize

                      3.6MB

                      Download

                    • memory/2712-133-0x0000023E16420000-0x0000023E16428000-memory.dmp

                      Filesize

                      32KB

                      Download

                    • memory/2712-134-0x0000023E163B0000-0x0000023E163B1000-memory.dmp

                      Filesize

                      4KB

                      Download

                    • memory/2712-135-0x0000023E165B0000-0x0000023E165B8000-memory.dmp

                      Filesize

                      32KB

                      Download

                    • memory/2712-136-0x0000023E16590000-0x0000023E16591000-memory.dmp

                      Filesize

                      4KB

                      Download

                    • memory/3472-132-0x00007FF7B7260000-0x00007FF7B75EE000-memory.dmp

                      Filesize

                      3.6MB

                      Download