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Analysis

  • max time kernel
    9s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/03/2025, 06:17

General

  • Target

    d690267038d2a718d56558e839b2613a.exe

  • Size

    347KB

  • MD5

    d690267038d2a718d56558e839b2613a

  • SHA1

    24eb35483762da9cd99f113bc2252516a1806b76

  • SHA256

    15b9622370397ba0679cdefe1a1eb00883c58a588f0d08cf825e89447bbb4b25

  • SHA512

    aa2861ae8f02dea35b66f9f11c17ad5231fb5b20ac039dd3c4814abb7b5af7093eda4449c2ec9a34f1dccf658b2a359c591295af0901d0dbfaaa77b791347714

  • SSDEEP

    6144:CCwHsJ+q0CwC40mb8411g49pPdMFMhITJfjjBMz8mvtUPHjEG0EILMTWhDQas9gA:QIx74VMFLT9RMz8AijEG0tLzhDQr9gTU

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 4 IoCs
  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:616
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        2⤵
          PID:812
        • C:\Windows\system32\dwm.exe
          "dwm.exe"
          2⤵
            PID:316
        • C:\Windows\system32\lsass.exe
          C:\Windows\system32\lsass.exe
          1⤵
            PID:680
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k DcomLaunch -p
            1⤵
              PID:784
            • C:\Windows\system32\fontdrvhost.exe
              "fontdrvhost.exe"
              1⤵
                PID:804
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k RPCSS -p
                1⤵
                  PID:908
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
                  1⤵
                    PID:956
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
                    1⤵
                      PID:440
                    • C:\Windows\System32\svchost.exe
                      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
                      1⤵
                        PID:824
                      • C:\Windows\System32\svchost.exe
                        C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
                        1⤵
                          PID:1048
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
                          1⤵
                            PID:1056
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
                            1⤵
                              PID:1112
                            • C:\Windows\system32\svchost.exe
                              C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
                              1⤵
                                PID:1172
                              • C:\Windows\System32\svchost.exe
                                C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
                                1⤵
                                  PID:1196
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
                                  1⤵
                                    PID:1280
                                  • C:\Windows\system32\svchost.exe
                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
                                    1⤵
                                      PID:1292
                                    • C:\Windows\system32\svchost.exe
                                      C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
                                      1⤵
                                        PID:1336
                                      • C:\Windows\system32\svchost.exe
                                        C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
                                        1⤵
                                          PID:1352
                                        • C:\Windows\system32\svchost.exe
                                          C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
                                          1⤵
                                            PID:1428
                                            • C:\Windows\system32\sihost.exe
                                              sihost.exe
                                              2⤵
                                                PID:2728
                                            • C:\Windows\system32\svchost.exe
                                              C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
                                              1⤵
                                                PID:1464
                                              • C:\Windows\System32\svchost.exe
                                                C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
                                                1⤵
                                                  PID:1472
                                                • C:\Windows\system32\svchost.exe
                                                  C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
                                                  1⤵
                                                    PID:1628
                                                  • C:\Windows\System32\svchost.exe
                                                    C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
                                                    1⤵
                                                      PID:1676
                                                    • C:\Windows\System32\svchost.exe
                                                      C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
                                                      1⤵
                                                        PID:1728
                                                      • C:\Windows\System32\svchost.exe
                                                        C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
                                                        1⤵
                                                          PID:1784
                                                        • C:\Windows\System32\svchost.exe
                                                          C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                          1⤵
                                                            PID:1812
                                                          • C:\Windows\system32\svchost.exe
                                                            C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
                                                            1⤵
                                                              PID:2008
                                                            • C:\Windows\System32\svchost.exe
                                                              C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
                                                              1⤵
                                                                PID:2020
                                                              • C:\Windows\system32\svchost.exe
                                                                C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
                                                                1⤵
                                                                  PID:1140
                                                                • C:\Windows\System32\svchost.exe
                                                                  C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
                                                                  1⤵
                                                                    PID:1008
                                                                  • C:\Windows\system32\svchost.exe
                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
                                                                    1⤵
                                                                      PID:1712
                                                                    • C:\Windows\System32\spoolsv.exe
                                                                      C:\Windows\System32\spoolsv.exe
                                                                      1⤵
                                                                        PID:2112
                                                                      • C:\Windows\system32\svchost.exe
                                                                        C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
                                                                        1⤵
                                                                          PID:2164
                                                                        • C:\Windows\System32\svchost.exe
                                                                          C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
                                                                          1⤵
                                                                            PID:2208
                                                                          • C:\Windows\System32\svchost.exe
                                                                            C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
                                                                            1⤵
                                                                              PID:2316
                                                                            • C:\Windows\system32\svchost.exe
                                                                              C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
                                                                              1⤵
                                                                                PID:2520
                                                                              • C:\Windows\system32\svchost.exe
                                                                                C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
                                                                                1⤵
                                                                                  PID:2528
                                                                                • C:\Windows\system32\svchost.exe
                                                                                  C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
                                                                                  1⤵
                                                                                    PID:2668
                                                                                  • C:\Windows\system32\svchost.exe
                                                                                    C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
                                                                                    1⤵
                                                                                      PID:2700
                                                                                    • C:\Users\Admin\AppData\Local\Temp\d690267038d2a718d56558e839b2613a.exe
                                                                                      "C:\Users\Admin\AppData\Local\Temp\d690267038d2a718d56558e839b2613a.exe"
                                                                                      1⤵
                                                                                      • Checks computer location settings
                                                                                      • Suspicious use of WriteProcessMemory
                                                                                      PID:5164
                                                                                      • C:\Users\Admin\AppData\Local\Temp\BronxCrypt.exe
                                                                                        "C:\Users\Admin\AppData\Local\Temp\BronxCrypt.exe"
                                                                                        2⤵
                                                                                        • Executes dropped EXE
                                                                                        • System Location Discovery: System Language Discovery
                                                                                        • Suspicious behavior: EnumeratesProcesses
                                                                                        • Suspicious use of AdjustPrivilegeToken
                                                                                        • Suspicious use of WriteProcessMemory
                                                                                        PID:3092
                                                                                        • C:\Program Files (x86)\Internet Explorer\iexplore.exe
                                                                                          "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
                                                                                          3⤵
                                                                                          • Adds policy Run key to start application
                                                                                          • Boot or Logon Autostart Execution: Active Setup
                                                                                          • Adds Run key to start application
                                                                                          • Drops file in Program Files directory
                                                                                          • System Location Discovery: System Language Discovery
                                                                                          PID:444

                                                                                    Network

                                                                                    MITRE ATT&CK Enterprise v15

                                                                                    Replay Monitor

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                                                                                    Downloads

                                                                                    • C:\Users\Admin\AppData\Local\Temp\BronxCrypt.exe

                                                                                      Filesize

                                                                                      233KB

                                                                                      MD5

                                                                                      d6b8056df27e8a8057ff4e8d2b4e3810

                                                                                      SHA1

                                                                                      1767a13ec95193043d7ffe9626e46f3cc7941425

                                                                                      SHA256

                                                                                      59f894e6f232e0a3c0f28531e3de35e079fe48c6fce2b7201611e15772d63ac1

                                                                                      SHA512

                                                                                      ddc8290971070b1d044d0e5c2c3bf72ef57fc368828055168514591cca2815c6eef50f365fee35377b4b1bf1980d5235d872a183e2722ec1acbe318688ada89a

                                                                                    • memory/3092-49-0x00000000021F0000-0x00000000021FA000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-63-0x0000000002420000-0x000000000242A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-84-0x0000000002440000-0x000000000244A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-77-0x0000000010450000-0x000000001045A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-78-0x0000000010450000-0x000000001045A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-70-0x0000000002430000-0x000000000243A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-35-0x00000000021D0000-0x00000000021DA000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-56-0x0000000002410000-0x000000000241A000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-42-0x00000000021E0000-0x00000000021EA000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-25-0x00000000021C0000-0x00000000021CA000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-26-0x00000000021C0000-0x00000000021CA000-memory.dmp

                                                                                      Filesize

                                                                                      40KB

                                                                                    • memory/3092-19-0x0000000010410000-0x0000000010441000-memory.dmp

                                                                                      Filesize

                                                                                      196KB

                                                                                    • memory/5164-2-0x00007FFD26EC0000-0x00007FFD27861000-memory.dmp

                                                                                      Filesize

                                                                                      9.6MB

                                                                                    • memory/5164-17-0x00007FFD26EC0000-0x00007FFD27861000-memory.dmp

                                                                                      Filesize

                                                                                      9.6MB

                                                                                    • memory/5164-0-0x00007FFD27175000-0x00007FFD27176000-memory.dmp

                                                                                      Filesize

                                                                                      4KB

                                                                                    • memory/5164-1-0x000000001BD90000-0x000000001BE36000-memory.dmp

                                                                                      Filesize

                                                                                      664KB

                                                                                    • memory/5164-7-0x000000001CA30000-0x000000001CA7C000-memory.dmp

                                                                                      Filesize

                                                                                      304KB

                                                                                    • memory/5164-6-0x0000000001570000-0x0000000001578000-memory.dmp

                                                                                      Filesize

                                                                                      32KB

                                                                                    • memory/5164-4-0x000000001C8D0000-0x000000001C96C000-memory.dmp

                                                                                      Filesize

                                                                                      624KB

                                                                                    • memory/5164-5-0x00007FFD26EC0000-0x00007FFD27861000-memory.dmp

                                                                                      Filesize

                                                                                      9.6MB

                                                                                    • memory/5164-3-0x000000001C310000-0x000000001C7DE000-memory.dmp

                                                                                      Filesize

                                                                                      4.8MB