Analysis

  • max time kernel
    11s
  • max time network
    30s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/04/2024, 02:49

General

  • Target
    Nezur.exe
  • Size 4.6MB
  • Sample240412-dbfegach97
  • SHA256 42317a2bf653554d75fee360889868dca0d1fa4cd8db24dac5e616e4ea6208c3
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Stops running service(s) 3 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Themida packer 9 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Kills process with taskkill 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Nezur.exe
    "C:\Users\Admin\AppData\Local\Temp\Nezur.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3076
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Nezur.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4748
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Nezur.exe" MD5
        3⤵
          PID:2540
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:1380
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:1492
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c taskkill /f /im HTTPDebuggerUI.exe >nul 2>&1
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:2688
            • C:\Windows\system32\taskkill.exe
              taskkill /f /im HTTPDebuggerUI.exe
              3⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:4824
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://key.nezur.io/
            2⤵
            • Enumerates system info in registry
            • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:1016
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffd148346f8,0x7ffd14834708,0x7ffd14834718
              3⤵
                PID:5024
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2096 /prefetch:2
                3⤵
                  PID:4100
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2148 /prefetch:3
                  3⤵
                    PID:4336
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3080 /prefetch:1
                    3⤵
                      PID:2276
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3092 /prefetch:1
                      3⤵
                        PID:1424
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=3412 /prefetch:8
                        3⤵
                          PID:2824
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4528 /prefetch:1
                          3⤵
                            PID:4348
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4536 /prefetch:1
                            3⤵
                              PID:5004
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=4988 /prefetch:1
                              3⤵
                                PID:3744
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5676 /prefetch:1
                                3⤵
                                  PID:1968
                                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3936 /prefetch:1
                                  3⤵
                                    PID:216
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=12 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6080 /prefetch:1
                                    3⤵
                                      PID:5056
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=13 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6256 /prefetch:1
                                      3⤵
                                        PID:4364
                                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=14 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5364 /prefetch:1
                                        3⤵
                                          PID:5068
                                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=15 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5416 /prefetch:1
                                          3⤵
                                            PID:3296
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2084,10944376369173238382,9281211421175461599,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=16 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6600 /prefetch:1
                                            3⤵
                                              PID:4332
                                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://1cheats.com/store/product/41-nezur-key-bypass-lifetime-license/
                                            2⤵
                                            • Suspicious use of WriteProcessMemory
                                            PID:896
                                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffd148346f8,0x7ffd14834708,0x7ffd14834718
                                              3⤵
                                                PID:4808
                                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1448,17282308249568827119,14019861754216221938,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2076 /prefetch:3
                                                3⤵
                                                  PID:3116
                                              • C:\Windows\system32\cmd.exe
                                                C:\Windows\system32\cmd.exe /c taskkill /f /im HTTPDebuggerSvc.exe >nul 2>&1
                                                2⤵
                                                • Suspicious use of WriteProcessMemory
                                                PID:1868
                                                • C:\Windows\system32\taskkill.exe
                                                  taskkill /f /im HTTPDebuggerSvc.exe
                                                  3⤵
                                                  • Kills process with taskkill
                                                  • Suspicious use of AdjustPrivilegeToken
                                                  PID:1612
                                              • C:\Windows\system32\cmd.exe
                                                C:\Windows\system32\cmd.exe /c sc stop HTTPDebuggerPro >nul 2>&1
                                                2⤵
                                                  PID:2964
                                                  • C:\Windows\system32\sc.exe
                                                    sc stop HTTPDebuggerPro
                                                    3⤵
                                                    • Launches sc.exe
                                                    PID:3728
                                                • C:\Windows\system32\cmd.exe
                                                  C:\Windows\system32\cmd.exe /c taskkill /FI "IMAGENAME eq cheatengine*" /IM * /F /T >nul 2>&1
                                                  2⤵
                                                    PID:1700
                                                    • C:\Windows\system32\taskkill.exe
                                                      taskkill /FI "IMAGENAME eq cheatengine*" /IM * /F /T
                                                      3⤵
                                                      • Kills process with taskkill
                                                      • Suspicious use of AdjustPrivilegeToken
                                                      PID:4948
                                                  • C:\Windows\system32\cmd.exe
                                                    C:\Windows\system32\cmd.exe /c taskkill /FI "IMAGENAME eq httpdebugger*" /IM * /F /T >nul 2>&1
                                                    2⤵
                                                      PID:1180
                                                      • C:\Windows\system32\taskkill.exe
                                                        taskkill /FI "IMAGENAME eq httpdebugger*" /IM * /F /T
                                                        3⤵
                                                        • Kills process with taskkill
                                                        PID:2972
                                                    • C:\Windows\system32\cmd.exe
                                                      C:\Windows\system32\cmd.exe /c taskkill /FI "IMAGENAME eq processhacker*" /IM * /F /T >nul 2>&1
                                                      2⤵
                                                        PID:1700
                                                        • C:\Windows\system32\taskkill.exe
                                                          taskkill /FI "IMAGENAME eq processhacker*" /IM * /F /T
                                                          3⤵
                                                          • Kills process with taskkill
                                                          PID:4660
                                                    • C:\Windows\System32\CompPkgSrv.exe
                                                      C:\Windows\System32\CompPkgSrv.exe -Embedding
                                                      1⤵
                                                        PID:872
                                                      • C:\Windows\System32\CompPkgSrv.exe
                                                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                                                        1⤵
                                                          PID:2528

                                                        Network

                                                              MITRE ATT&CK Enterprise v15

                                                              Replay Monitor

                                                              Loading Replay Monitor...

                                                              Downloads

                                                              settings.dat

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                              • Size 152B
                                                              • SHA256 4c0224fb7cc26ccf74f5be586f18401db57cce935c767a446659b828a7b5ee60
                                                              • MD5 SHA1 SHA512

                                                              settings.dat

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                                              • Size 152B
                                                              • SHA256 3a654b499247e59e34040f3b192a0069e8f3904e2398cbed90e86d981378e8bc
                                                              • MD5 SHA1 SHA512

                                                              Preferences

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                              • Size 6KB
                                                              • SHA256 750d4affccbc1b344cd3a7bbf963011286586989969352250df078ea0e84856c
                                                              • MD5 SHA1 SHA512 SSDEEP

                                                              Preferences

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                                              • Size 7KB
                                                              • SHA256 d527e97fcfa016d7d518c754941661a0f65f65406a4aa95498c6a14cf9eca8a9
                                                              • MD5 SHA1 SHA512 SSDEEP

                                                              Local State

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                                              • Size 8KB
                                                              • SHA256 c26df6e44f329ea8e8e0712a09efe05637ba1231d7e77b49c97015beeda98bd4
                                                              • MD5 SHA1 SHA512 SSDEEP

                                                              Local State

                                                              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                                              • Size 11KB
                                                              • SHA256 dff1e0081be1ed9a3b9431cb603f75e9894d92eb52fd435a587bac13d24a185a
                                                              • MD5 SHA1 SHA512 SSDEEP

                                                              memory/3076-5-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-7-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-6-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-4-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-3-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-2-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-0-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-149-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp

                                                              memory/3076-1-0x00007FFD23150000-0x00007FFD23345000-memory.dmp

                                                              memory/3076-173-0x00007FF628E10000-0x00007FF6299C6000-memory.dmp