Analysis

  • max time kernel
    120s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    14/08/2024, 05:52

General

  • Target

    b41ed84e07e6bdac7659f947b4c4eb30N.exe

  • Size

    65KB

  • MD5

    b41ed84e07e6bdac7659f947b4c4eb30

  • SHA1

    5c7db53453b119ab65318492ba647f1b8ef45b61

  • SHA256

    3a3b2384da8372f688eb5aa5648600fa14e5c44914b809f6c481c82a276005a0

  • SHA512

    ce86d532417e400a9b31986595a2e01a2162cd56ae191f03a4f1b1fe946fa6b36c9ae5f92de15c0c5bef22cf6a0ba88db3f5974c08496f9457dc60eaf39a9d89

  • SSDEEP

    1536:8qx6nOp+I5kmJKRWtc5yzvmg+hORY9ZwbIFxee:fxeQ+IMWqyzv9+Yy7wm5

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 32 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 behavior: MapViewOfSection 47 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\wininit.exe
    wininit.exe
    1⤵
      PID:384
      • C:\Windows\system32\services.exe
        C:\Windows\system32\services.exe
        2⤵
          PID:476
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k DcomLaunch
            3⤵
              PID:608
              • C:\Windows\system32\wbem\wmiprvse.exe
                C:\Windows\system32\wbem\wmiprvse.exe
                4⤵
                  PID:1508
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  4⤵
                    PID:1572
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k RPCSS
                  3⤵
                    PID:688
                  • C:\Windows\System32\svchost.exe
                    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                    3⤵
                      PID:760
                    • C:\Windows\System32\svchost.exe
                      C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                      3⤵
                        PID:824
                        • C:\Windows\system32\Dwm.exe
                          "C:\Windows\system32\Dwm.exe"
                          4⤵
                            PID:1176
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k netsvcs
                          3⤵
                            PID:872
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalService
                            3⤵
                              PID:980
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k NetworkService
                              3⤵
                                PID:296
                              • C:\Windows\System32\spoolsv.exe
                                C:\Windows\System32\spoolsv.exe
                                3⤵
                                  PID:548
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                                  3⤵
                                    PID:1076
                                  • C:\Windows\system32\taskhost.exe
                                    "taskhost.exe"
                                    3⤵
                                      PID:1120
                                    • C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE
                                      "C:\Program Files\Common Files\Microsoft Shared\OfficeSoftwareProtectionPlatform\OSPPSVC.EXE"
                                      3⤵
                                        PID:1312
                                      • C:\Windows\system32\svchost.exe
                                        C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                                        3⤵
                                          PID:2280
                                        • C:\Windows\system32\sppsvc.exe
                                          C:\Windows\system32\sppsvc.exe
                                          3⤵
                                            PID:2304
                                          • C:\Windows\SysWOW64\gkmiuy.exe
                                            C:\Windows\SysWOW64\gkmiuy.exe
                                            3⤵
                                            • Executes dropped EXE
                                            • Loads dropped DLL
                                            • Enumerates connected drives
                                            • Drops file in System32 directory
                                            • Drops file in Program Files directory
                                            • System Location Discovery: System Language Discovery
                                            • Suspicious behavior: EnumeratesProcesses
                                            • Suspicious behavior: MapViewOfSection
                                            • Suspicious use of AdjustPrivilegeToken
                                            • Suspicious use of SetWindowsHookEx
                                            PID:1392
                                        • C:\Windows\system32\lsass.exe
                                          C:\Windows\system32\lsass.exe
                                          2⤵
                                            PID:492
                                          • C:\Windows\system32\lsm.exe
                                            C:\Windows\system32\lsm.exe
                                            2⤵
                                              PID:500
                                          • C:\Windows\system32\csrss.exe
                                            %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                            1⤵
                                              PID:396
                                            • C:\Windows\system32\winlogon.exe
                                              winlogon.exe
                                              1⤵
                                                PID:432
                                              • C:\Windows\Explorer.EXE
                                                C:\Windows\Explorer.EXE
                                                1⤵
                                                  PID:1204
                                                  • C:\Users\Admin\AppData\Local\Temp\b41ed84e07e6bdac7659f947b4c4eb30N.exe
                                                    "C:\Users\Admin\AppData\Local\Temp\b41ed84e07e6bdac7659f947b4c4eb30N.exe"
                                                    2⤵
                                                    • Drops file in System32 directory
                                                    • System Location Discovery: System Language Discovery
                                                    • Suspicious behavior: EnumeratesProcesses
                                                    • Suspicious behavior: MapViewOfSection
                                                    • Suspicious behavior: RenamesItself
                                                    • Suspicious use of AdjustPrivilegeToken
                                                    • Suspicious use of SetWindowsHookEx
                                                    • Suspicious use of WriteProcessMemory
                                                    PID:2572

                                                Network

                                                      MITRE ATT&CK Enterprise v15

                                                      Replay Monitor

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                                                      Downloads

                                                      • C:\Windows\SysWOW64\gkmiuy.exe

                                                        Filesize

                                                        65KB

                                                        MD5

                                                        b41ed84e07e6bdac7659f947b4c4eb30

                                                        SHA1

                                                        5c7db53453b119ab65318492ba647f1b8ef45b61

                                                        SHA256

                                                        3a3b2384da8372f688eb5aa5648600fa14e5c44914b809f6c481c82a276005a0

                                                        SHA512

                                                        ce86d532417e400a9b31986595a2e01a2162cd56ae191f03a4f1b1fe946fa6b36c9ae5f92de15c0c5bef22cf6a0ba88db3f5974c08496f9457dc60eaf39a9d89

                                                      • \Windows\SysWOW64\hra33.dll

                                                        Filesize

                                                        73KB

                                                        MD5

                                                        b17f97d0b2264bec2710bad5d469a14f

                                                        SHA1

                                                        a86178525e695d0a3592eeaaafc600575da80083

                                                        SHA256

                                                        9b9dac22bb518425d498ea84d4728bd78eb78880e8685b77172d883471a26ac3

                                                        SHA512

                                                        5641230280df825ee979dbe473ecc2a03dc8907f1b27a1c6ca39c87e2b4d8e5a18070e91fd39b38cbf50a48a587288de0aab14cc826c318ff98a03401160ad46

                                                      • memory/1392-43-0x0000000000400000-0x0000000000415000-memory.dmp

                                                        Filesize

                                                        84KB

                                                      • memory/2572-0-0x0000000000400000-0x0000000000415000-memory.dmp

                                                        Filesize

                                                        84KB

                                                      • memory/2572-2-0x0000000077520000-0x0000000077521000-memory.dmp

                                                        Filesize

                                                        4KB

                                                      • memory/2572-1-0x000000007751F000-0x0000000077520000-memory.dmp

                                                        Filesize

                                                        4KB

                                                      • memory/2572-5-0x0000000077520000-0x0000000077521000-memory.dmp

                                                        Filesize

                                                        4KB

                                                      • memory/2572-6-0x000000007751F000-0x0000000077520000-memory.dmp

                                                        Filesize

                                                        4KB

                                                      • memory/2572-9-0x0000000000400000-0x0000000000415000-memory.dmp

                                                        Filesize

                                                        84KB

                                                      • memory/2572-7-0x000000007EF90000-0x000000007EF9C000-memory.dmp

                                                        Filesize

                                                        48KB