Analysis

  • max time kernel
    41s
  • max time network
    132s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-07-2024 15:08

General

  • Target

    23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2.exe

  • Size

    384KB

  • MD5

    5ac0f050f93f86e69026faea1fbb4450

  • SHA1

    9709774fde9ec740ad6fed8ed79903296ca9d571

  • SHA256

    23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2

  • SHA512

    b554487c4e26a85ec5179cdcc1d25b5bc494e8821a8899fbbf868c3cf41f70cc72db107613b3f6655d3ab70f4db94cce2589066bb354b1ed955098d3911b844d

  • SSDEEP

    6144:f5yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQC:fTX6WSofcZ+KCIGD

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.

  • 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).

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 20 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:2668
    • C:\Windows\system32\taskhostw.exe
      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
      1⤵
        PID:2800
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
        1⤵
          PID:3584
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:3776
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:3868
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3932
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:4028
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3600
                  • 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:5044
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:1904
                      • C:\Windows\system32\backgroundTaskHost.exe
                        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                        1⤵
                          PID:60
                        • C:\Users\Admin\AppData\Local\Temp\23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2.exe
                          "C:\Users\Admin\AppData\Local\Temp\23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2.exe"
                          1⤵
                          • Checks computer location settings
                          • Suspicious use of WriteProcessMemory
                          PID:2028
                          • C:\users\Public\SEuhR.exe
                            "C:\users\Public\SEuhR.exe" C:\Users\Admin\AppData\Local\Temp\23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2.exe
                            2⤵
                            • Checks computer location settings
                            • Deletes itself
                            • Executes dropped EXE
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:4884
                            • 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\SEuhR.exe" /f
                              3⤵
                              • Suspicious use of WriteProcessMemory
                              PID:1768
                              • C:\Windows\system32\reg.exe
                                REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\SEuhR.exe" /f
                                4⤵
                                • Adds Run key to start application
                                PID:3452
                        • C:\Windows\System32\RuntimeBroker.exe
                          C:\Windows\System32\RuntimeBroker.exe -Embedding
                          1⤵
                            PID:1084
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:4672
                            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                              1⤵
                                PID:26560

                              Network

                              MITRE ATT&CK Enterprise v15

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\VisualElements\Logo.png

                                Filesize

                                32KB

                                MD5

                                bf26339de7625483f365027f228933b9

                                SHA1

                                1ce21b594fe9fc2b42dc91c0559f142011478c2c

                                SHA256

                                381e0cdc11c0d81bc294a748b6905b5cfbf464b4b4b5ef5fda3e4cb5b2b34bbb

                                SHA512

                                9cb952017e5a0c65eeef87da7a3f551138d781331bd90348177de2020f06ff279811ee38ab3cf6cf6aed2bf49427df6896ed83b8cd72357c175eae065ffa6fcd

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

                                Filesize

                                3.3MB

                                MD5

                                e87d0c3ecd7d46c75c226dddd2f61e83

                                SHA1

                                23260dfb87611369f222bcbfe9fd896590aa8da2

                                SHA256

                                f61960568a186bf054715ca1bd0415c17cb9215293cab6fb9e1626099880145f

                                SHA512

                                9520bf7163eccd62bd096077ad0d9f5761700a343ba0a6cffbd83275fc2f97522c84a198392414310cfc9f1f72f5231943a8caad0434f5bec6b747368136e59b

                              • C:\ProgramData\Microsoft\User Account Pictures\user.png

                                Filesize

                                6KB

                                MD5

                                f31af33eb6aa8d82bce0a9603263b2d7

                                SHA1

                                93a665c5303ce9de65ebe3244fd39fb221dfb743

                                SHA256

                                a0687e221387aacfaf4173956f9a0d48c8c2cb96b6888e5c7a2f530f24d3b5af

                                SHA512

                                429d534d2904a31b3edcd257cc40b6101ef39f8b2866bf9c51fa5d93ba42b5673621715533b7e42c3676e9c39656f2303fbbf709db9c97f8786da819c248dad7

                              • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\resources.pri

                                Filesize

                                4KB

                                MD5

                                967c12cf753dccc19a072f2928567043

                                SHA1

                                efeb6f99383a473775f6f2fc6695a82e589066de

                                SHA256

                                b941196ed51f0eddb0f4a9d09ab1898ee0bebea70edde0947434473b96757612

                                SHA512

                                63f76b27ed608c780f5209a38611bfa685ff2edf58b5b15b6b68a752b6e00ede0c2538b752f1f7fff961e88a1a042f49f6d9e9202f93e5cb8e0de1c0cc836937

                              • C:\Users\Public\SEuhR.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/2640-52-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-71-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-87-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-45-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-47-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-81-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-79-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-77-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-75-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-73-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-86-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-83-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-70-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-69-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-67-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-66-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-65-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-48-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-62-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-60-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-58-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-56-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-90-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-50-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-46-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-88-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-84-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-44-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-42-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-54-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-40-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-39-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-38-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-37-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-32-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-41-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-29-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-89-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-106-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-105-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-104-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-103-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-91-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-101-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-99-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-97-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-95-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-93-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-68-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-64-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-9-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB

                              • memory/2640-8-0x00007FF6D34D0000-0x00007FF6D385E000-memory.dmp

                                Filesize

                                3.6MB