Analysis

  • max time kernel
    45s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-12-2024 18:25

General

  • Target

    2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe

  • Size

    384KB

  • MD5

    67164c4680d767fcc5dbe48c3586444c

  • SHA1

    059cea33a907a59d6f41b2aceef3571bf2a4ceb0

  • SHA256

    9c21c7149cf5980ee64d5fbb3f78a336b122cf7e92335718bcc5fa45e9dafb25

  • SHA512

    0db0054182afcb6c3b8564457224598985958fe409503a3b1954852bd9f54ecb5ee0bb68d7a8551f369836d7e825c1bb6cda9f47f66aa43ce10d6f1b30bfe31a

  • SSDEEP

    6144:f5yaWtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQ:fTW6WSofcZ+KCIG

Malware Config

Extracted

Path

F:\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.

  • Ryuk family
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Drops file in Program Files directory
    PID:2640
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
    1⤵
      PID:2684
    • C:\Windows\system32\taskhostw.exe
      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
      1⤵
        PID:2876
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
        1⤵
          PID:3608
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:3796
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:3896
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3964
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:4068
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3420
                  • C:\Windows\System32\RuntimeBroker.exe
                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                    1⤵
                      PID:1484
                    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
                      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
                      1⤵
                        PID:60
                      • C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe
                        "C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe"
                        1⤵
                        • Checks computer location settings
                        • System Location Discovery: System Language Discovery
                        • Suspicious use of WriteProcessMemory
                        PID:1960
                        • C:\users\Public\yVzMR.exe
                          "C:\users\Public\yVzMR.exe" C:\Users\Admin\AppData\Local\Temp\2024-12-17_67164c4680d767fcc5dbe48c3586444c_luca-stealer_ryuk.exe
                          2⤵
                          • Checks computer location settings
                          • Deletes itself
                          • Executes dropped EXE
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          PID:2968
                          • 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\yVzMR.exe" /f
                            3⤵
                            • Suspicious use of WriteProcessMemory
                            PID:4812
                            • C:\Windows\system32\reg.exe
                              REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\yVzMR.exe" /f
                              4⤵
                              • Adds Run key to start application
                              PID:3804
                      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                        1⤵
                          PID:29428

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        • C:\ProgramData\Microsoft\ClickToRun\MachineData\Catalog\Packages\{9AC08E99-230B-47E8-9721-4577B7F124EA}\{1A8308C7-90D1-4200-B16E-646F163A08E8}\Manifest.xml

                          Filesize

                          3.3MB

                          MD5

                          cb63f37966df81d1013dd1f8c21d9d87

                          SHA1

                          b597d406db7a924da9f6bf661dede6391bc9804a

                          SHA256

                          462e273737ad2ed421e2fc4e0f883d61c283176b2665b7b33036079e0dc468f6

                          SHA512

                          83f71b3e19ca95d855a51aced4f2cbb385a3f2d3cf82c80ce8d97ca2854f140887706dba607518aadfd639e6d72bd0bab64e1f165f60d3410b33f47bfed8f48b

                        • C:\Users\Public\yVzMR.exe

                          Filesize

                          170KB

                          MD5

                          31bd0f224e7e74eee2847f43aae23974

                          SHA1

                          92e331e1e8ad30538f38dd7ba31386afafa14a58

                          SHA256

                          8b0a5fb13309623c3518473551cb1f55d38d8450129d4a3c16b476f7b2867d7d

                          SHA512

                          a13f05a12b084ef425f542ff4be824bbccb5dbdfe085af8b7e19d81a6bcba4b8c1debcc38f6b57bc9265a4db21eed70852ece8cc62b3ef14c47fca3035a55249

                        • F:\RyukReadMe.txt

                          Filesize

                          804B

                          MD5

                          cd99cba6153cbc0b14b7a849e4d0180f

                          SHA1

                          375961866404a705916cbc6cd4915de7d9778923

                          SHA256

                          74c43a177917b1d57ea2eaf6212ccf3b9012b4d68bc45284349443eed0bf5ee2

                          SHA512

                          0c9f250c0e2ec9736b072a9807b6c3bec4b670ab2f511e65cf5d79e9a8c9a209eb91736ce2765b52b6d94a57c6aa1c16bb08e16727660699b70608439c8b7cda

                        • memory/2640-8-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-38-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-33-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-56-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-85-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-89-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-101-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-104-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-90-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-99-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-97-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-95-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-88-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-87-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-86-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-71-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-83-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-81-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-79-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-77-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-75-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-74-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-70-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-69-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-68-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-67-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-66-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-65-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-46-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-64-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-62-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-60-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-59-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-54-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-52-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-50-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-48-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-45-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-44-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-43-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-42-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-39-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-37-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-36-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-35-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-29-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-26-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-139-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-107-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-106-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-105-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2640-455-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2684-10-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB

                        • memory/2684-746-0x00007FF70D3E0000-0x00007FF70D76E000-memory.dmp

                          Filesize

                          3.6MB