Analysis

  • max time kernel
    126s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-es
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-eslocale:es-esos:windows10-2004-x64systemwindows
  • submitted
    06/05/2024, 16:42

General

  • Target
    SKlauncher-3.2.exe
  • Size 1.6MB
  • Sample240506-t7sbxaad41
  • SHA256 05ae2f0dd61ef10019b94c200e8df192b767bb4cc24a7e7b329ab43cc9c74caf
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Detected potential entity reuse from brand microsoft.
  • Drops file in System32 directory 11 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 3 IoCs
  • Suspicious use of FindShellTrayWindow 26 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 17 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.2.exe
    "C:\Users\Admin\AppData\Local\Temp\SKlauncher-3.2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4008
    • \??\c:\PROGRA~1\java\jre-1.8\bin\java.exe
      "c:\PROGRA~1\java\jre-1.8\bin\java.exe" -version
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4668
      • C:\Windows\system32\icacls.exe
        C:\Windows\system32\icacls.exe C:\ProgramData\Oracle\Java\.oracle_jre_usage /grant "everyone":(OI)(CI)M
        3⤵
        • Modifies file permissions
        PID:1708
    • \??\c:\PROGRA~1\java\jdk-1.8\jre\bin\java.exe
      "c:\PROGRA~1\java\jdk-1.8\jre\bin\java.exe" -version
      2⤵
        PID:3536
      • C:\Windows\SYSTEM32\reg.exe
        reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize" /v AppsUseLightTheme
        2⤵
          PID:3168
        • C:\Windows\SYSTEM32\rundll32.exe
          rundll32.exe url.dll,FileProtocolHandler https://login.microsoftonline.com/consumers/oauth2/v2.0/authorize?scope=XboxLive.signin%20offline_access&response_type=code&redirect_uri=http://localhost:26669/relogin&prompt=select_account&client_id=907a248d-3eb5-4d01-99d2-ff72d79c5eb1
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1048
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://login.microsoftonline.com/consumers/oauth2/v2.0/authorize?scope=XboxLive.signin%20offline_access&response_type=code&redirect_uri=http://localhost:26669/relogin&prompt=select_account&client_id=907a248d-3eb5-4d01-99d2-ff72d79c5eb1
            3⤵
            • Enumerates system info in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:1708
            • 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,0x100,0x104,0xd8,0x108,0x7fff46a046f8,0x7fff46a04708,0x7fff46a04718
              4⤵
                PID:748
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2068 /prefetch:2
                4⤵
                  PID:1988
                • 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=1500,16798271421621096563,3577354612830788463,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=2440 /prefetch:3
                  4⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:3464
                • 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=1500,16798271421621096563,3577354612830788463,131072 --lang=es --service-sandbox-type=utility --mojo-platform-channel-handle=2644 /prefetch:8
                  4⤵
                    PID:556
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --lang=es --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3344 /prefetch:1
                    4⤵
                      PID:1676
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --lang=es --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=3352 /prefetch:1
                      4⤵
                        PID:2500
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --lang=es --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=4980 /prefetch:1
                        4⤵
                          PID:2384
                        • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=5412 /prefetch:8
                          4⤵
                            PID:4968
                          • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=1500,16798271421621096563,3577354612830788463,131072 --lang=es --service-sandbox-type=none --mojo-platform-channel-handle=5412 /prefetch:8
                            4⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:4560
                      • C:\Users\Admin\AppData\Local\Temp\i4jdel0.exe
                        C:\Users\Admin\AppData\Local\Temp\i4jdel0.exe i4j1007790867191101790.tmp
                        2⤵
                        • Executes dropped EXE
                        PID:1504
                    • C:\Windows\System32\CompPkgSrv.exe
                      C:\Windows\System32\CompPkgSrv.exe -Embedding
                      1⤵
                        PID:384
                      • C:\Windows\System32\CompPkgSrv.exe
                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                        1⤵
                          PID:3788
                        • C:\Windows\System32\rundll32.exe
                          C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                          1⤵
                            PID:2860
                          • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
                            "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\Downloads\JoinDismount.rtf" /o ""
                            1⤵
                            • Checks processor information in registry
                            • Enumerates system info in registry
                            • Suspicious behavior: AddClipboardFormatListener
                            • Suspicious use of SetWindowsHookEx
                            PID:1340
                          • C:\Windows\system32\mspaint.exe
                            "C:\Windows\system32\mspaint.exe" "C:\Users\Admin\Desktop\CompleteReceive.jpg" /ForceBootstrapPaint3D
                            1⤵
                            • Modifies registry class
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of SetWindowsHookEx
                            PID:2032
                          • C:\Windows\System32\svchost.exe
                            C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s DsSvc
                            1⤵
                            • Drops file in System32 directory
                            PID:4588
                          • C:\Windows\system32\OpenWith.exe
                            C:\Windows\system32\OpenWith.exe -Embedding
                            1⤵
                            • Suspicious use of SetWindowsHookEx
                            PID:1076

                          Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                3903daac9bc4a3b7.timestamp

                                • Path C:\ProgramData\Oracle\Java\.oracle_jre_usage\3903daac9bc4a3b7.timestamp
                                • Size 46B
                                • SHA256 3dc3e6031a0a13b2542999032c9a521c09f9a14227b32e83301d9f0e46aa15e6
                                • MD5 SHA1 SHA512

                                settings.dat

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                • Size 152B
                                • SHA256 0021f72dbca789f179762b0e17c28fe0b93a12539b08294800e47469905aeb51
                                • MD5 SHA1 SHA512

                                settings.dat

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                • Size 152B
                                • SHA256 c550af5ba51f68ac4d18747edc5dea1a655dd212d84bad1e6168ba7a97745561
                                • MD5 SHA1 SHA512

                                755a3a43-f12d-413a-9cbf-24966e2eacc2.tmp

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\755a3a43-f12d-413a-9cbf-24966e2eacc2.tmp
                                • Size 363B
                                • SHA256 67071c62dafe83222a4757032c95b4ecbadf34b870dccda8610bebc2a26319f9
                                • MD5 SHA1 SHA512

                                the-real-index

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index
                                • Size 120B
                                • SHA256 ef6fd3c0351e94b73890294c15e82a66aa1e527aac5b34cf00b5dedc737d4124
                                • MD5 SHA1 SHA512

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 6KB
                                • SHA256 6ca2c2eef4bcfa55047e5c312818d61ced408452be3f466dc49469defa6236c6
                                • MD5 SHA1 SHA512 SSDEEP

                                Preferences

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                • Size 5KB
                                • SHA256 2b3d017273fed39cff659645cce848eedebc18013c34ef85ca8ba99d29e19122
                                • MD5 SHA1 SHA512 SSDEEP

                                CURRENT

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                • Size 16B
                                • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                • MD5 SHA1 SHA512

                                Local State

                                • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                • Size 11KB
                                • SHA256 a17924e6db7ebfd8fdb33d2d9a71756091eff7de5cd016ff90a6ee066ac15c9a
                                • MD5 SHA1 SHA512 SSDEEP

                                9cd93bc6dcf544bae69531052e64647ec02f2bb4.tbres

                                • Path C:\Users\Admin\AppData\Local\Microsoft\TokenBroker\Cache\9cd93bc6dcf544bae69531052e64647ec02f2bb4.tbres
                                • Size 4KB
                                • SHA256 ddc36d4fed552390de86e8457a5513ecf88677a1e107992c64e2940b7514fd05
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF1689212120580374212.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF1689212120580374212.tmp
                                • Size 397KB
                                • SHA256 64f8be6e55c37e32ef03da99714bf3aa58b8f2099bfe4f759a7578e3b8291123
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF1716285016866995924.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF1716285016866995924.tmp
                                • Size 405KB
                                • SHA256 0cb1bc1335372d9e3a0cf6f5311c7cce87af90d2a777fdeec18be605a2a70bc1
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF2983120253000783454.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF2983120253000783454.tmp
                                • Size 412KB
                                • SHA256 d549110689cdde0821ca2c7148f7b47a097166b4169786a4a9ede675f5ce87f3
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF399707320606434644.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF399707320606434644.tmp
                                • Size 398KB
                                • SHA256 1936d24cb0f4ce7006e08c6ef4243d2e42a7b45f2249f8fe54d92f76a317dfd1
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF5300075655308881382.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF5300075655308881382.tmp
                                • Size 400KB
                                • SHA256 5fc09af94a447fae6f82c00f15dfaef9eae7c560e6cbe46d3e84524019a574aa
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF6464235629903608965.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF6464235629903608965.tmp
                                • Size 393KB
                                • SHA256 4c392dcc8ad916f0f9df7559ab5563b01dd94f9f3b2db34617fe392e00060339
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF6601861685123735814.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF6601861685123735814.tmp
                                • Size 405KB
                                • SHA256 fe3714926082ac5764327e3b67ae52cb6f0cf6b8c4221c064a6cacf821079414
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF6687856542498847321.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF6687856542498847321.tmp
                                • Size 403KB
                                • SHA256 d054d998ae12be33820b100e0ed3923d513fa5c79c6d4e7ca1953afeb262ea9b
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF6715639106916640547.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF6715639106916640547.tmp
                                • Size 410KB
                                • SHA256 5e606f805a71432d4875de7dab737bf9dea1187090f0a5190da9b1bbab09f57c
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF7302946346213397734.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF7302946346213397734.tmp
                                • Size 401KB
                                • SHA256 1bda81124d6ae26ed16a7201e2bd93766af5a3b14faf79eea14d191ebbd41146
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF8281777644235373465.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF8281777644235373465.tmp
                                • Size 407KB
                                • SHA256 0d34f9588400a586b774be97e66ae8c076a8807b8455df0587b39d2a4a1a3b42
                                • MD5 SHA1 SHA512 SSDEEP

                                +JXF8664309200582740819.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\+JXF8664309200582740819.tmp
                                • Size 404KB
                                • SHA256 6bdebeb76083e187c7ae59420bfc24e851edb572e1a8d97c1c37b7b2dc26148c
                                • MD5 SHA1 SHA512 SSDEEP

                                SKlauncher-3.2.jar

                                • Path C:\Users\Admin\AppData\Local\Temp\e4j3A2A.tmp_dir1715013768\SKlauncher-3.2.jar
                                • Size 1.1MB
                                • SHA256 f7d3e01dcfc001cc80a988c518d4358955842d140054214d1367972c5c543350
                                • MD5 SHA1 SHA512 SSDEEP

                                exe4jlib.jar

                                • Path C:\Users\Admin\AppData\Local\Temp\e4j3A2A.tmp_dir1715013768\exe4jlib.jar
                                • Size 62KB
                                • SHA256 8a416dab7b3028f3e79b41521b65432ab2d25dec9f85e220ade0157badc0dd41
                                • MD5 SHA1 SHA512 SSDEEP

                                flatlaf-windows-x86_64-4541281346400.dll

                                • Path C:\Users\Admin\AppData\Local\Temp\flatlaf.temp\flatlaf-windows-x86_64-4541281346400.dll
                                • Size 22KB
                                • SHA256 ae3352b6ad6cffaae55f4387f9f5e79365ea17f8d5fb45ef11d21c3300a49a4c
                                • MD5 SHA1 SHA512 SSDEEP

                                i4j1007790867191101790.tmp

                                • Path C:\Users\Admin\AppData\Local\Temp\i4j1007790867191101790.tmp
                                • Size 880B
                                • SHA256 1f280eade9d1ae3af946df6cb272aab0d1a7d914ca0433e004cdbd2692865d27
                                • MD5 SHA1 SHA512

                                i4jdel0.exe

                                • Path C:\Users\Admin\AppData\Local\Temp\i4jdel0.exe
                                • Size 93KB
                                • SHA256 e48ef14933f4eb6071497a5311ca0ac6e115f7a0d57a60e519296f8fd42ad4fe
                                • MD5 SHA1 SHA512 SSDEEP

                                jna2530952690492754259.dll

                                • Path C:\Users\Admin\AppData\Local\Temp\jna-63116079\jna2530952690492754259.dll
                                • Size 248KB
                                • SHA256 69c45175ecfd25af023f96ac0bb2c45e6a95e3ba8a5a50ee7969ccab14825c44
                                • MD5 SHA1 SHA512 SSDEEP

                                sklauncher-fx.jar

                                • Path C:\Users\Admin\AppData\Roaming\.minecraft\sklauncher-fx.jar
                                • Size 17.2MB
                                • SHA256 0e79303169cd0305c364885824b1ee91b15e6ede8b7eae02e808ad4c4c35a36f
                                • MD5 SHA1 SHA512 SSDEEP

                                memory/3536-31-0x000001CC31280000-0x000001CC314F0000-memory.dmp

                                memory/3536-30-0x000001CC2FA70000-0x000001CC2FA71000-memory.dmp

                                memory/3536-20-0x000001CC31280000-0x000001CC314F0000-memory.dmp

                                memory/4008-251-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-864-0x0000000002700000-0x0000000002970000-memory.dmp

                                memory/4008-45-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-34-0x0000000002700000-0x0000000002970000-memory.dmp

                                memory/4008-178-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-176-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-201-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-134-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-110-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-49-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-142-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-210-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-84-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-1130-0x0000000002700000-0x0000000002970000-memory.dmp

                                memory/4008-202-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4008-204-0x0000000002650000-0x0000000002651000-memory.dmp

                                memory/4668-16-0x0000015D44EC0000-0x0000015D45130000-memory.dmp

                                memory/4668-5-0x0000015D44EC0000-0x0000015D45130000-memory.dmp

                                memory/4668-15-0x0000015D44EA0000-0x0000015D44EA1000-memory.dmp