Resubmissions

17/03/2025, 02:44

250317-c8ad2s1ky5 1

17/03/2025, 02:34

250317-c2ncbsxwds 10

17/03/2025, 02:29

250317-cyyc5axvct 10

Analysis

  • max time kernel
    600s
  • max time network
    499s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250314-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/03/2025, 02:34

General

  • Target

    http://h3a.in/jdtesc

Malware Config

Extracted

Family

kutaki

C2

http://91.223.82.87/~ojorobia/laptop/laptop.php

Signatures

  • Kutaki

    Information stealer and keylogger that hides inside legitimate Visual Basic applications.

  • Kutaki family
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 35 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files\Google\Chrome\Application\chrome.exe
    "C:\Program Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument http://h3a.in/jdtesc
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5976
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=133.0.6943.60 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ffb8ad4dcf8,0x7ffb8ad4dd04,0x7ffb8ad4dd10
      2⤵
        PID:1828
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --string-annotations --gpu-preferences=UAAAAAAAAADgAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=1836,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=1828 /prefetch:2
        2⤵
          PID:5112
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --string-annotations --field-trial-handle=1560,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2252 /prefetch:3
          2⤵
            PID:5308
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --string-annotations --field-trial-handle=2372,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=2380 /prefetch:8
            2⤵
              PID:5448
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3036,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3188 /prefetch:1
              2⤵
                PID:3260
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3032,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3168 /prefetch:1
                2⤵
                  PID:3128
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --extension-process --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4384,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4440 /prefetch:2
                  2⤵
                    PID:3512
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4684,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4724 /prefetch:1
                    2⤵
                      PID:6088
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --string-annotations --enable-dinosaur-easter-egg-alt-images --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --field-trial-handle=4868,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4844 /prefetch:1
                      2⤵
                        PID:5820
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5552,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5004 /prefetch:8
                        2⤵
                          PID:4496
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=quarantine.mojom.Quarantine --lang=en-US --service-sandbox-type=none --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5616,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=3324 /prefetch:8
                          2⤵
                            PID:5836
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=4744,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=6032 /prefetch:8
                            2⤵
                              PID:5732
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=5964,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=208 /prefetch:8
                              2⤵
                                PID:5716
                              • C:\Program Files\Google\Chrome\Application\chrome.exe
                                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.UtilWin --lang=en-US --service-sandbox-type=none --message-loop-type-ui --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=3964,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5976 /prefetch:8
                                2⤵
                                  PID:1824
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --disable-gpu-sandbox --use-gl=disabled --gpu-vendor-id=4318 --gpu-device-id=140 --gpu-sub-system-id=0 --gpu-revision=0 --gpu-driver-version=10.0.19041.546 --string-annotations --gpu-preferences=UAAAAAAAAADoAAAEAAAAAAAAAAAAAAAAAABgAAEAAAAAAAAAAAAAAAAAAABCAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAAAAAAEAAAAAAAAAAIAAAAAAAAAAgAAAAAAAAA --field-trial-handle=4456,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=5708 /prefetch:8
                                  2⤵
                                  • Suspicious behavior: EnumeratesProcesses
                                  PID:4644
                                • C:\Program Files\Google\Chrome\Application\chrome.exe
                                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=on_device_model.mojom.OnDeviceModelService --lang=en-US --service-sandbox-type=on_device_model_execution --video-capture-use-gpu-memory-buffer --string-annotations --field-trial-handle=4624,i,5017574348856844252,16164199639459510966,262144 --variations-seed-version=20250313-182214.581000 --mojo-platform-channel-handle=4460 /prefetch:8
                                  2⤵
                                    PID:4456
                                • C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe
                                  "C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe"
                                  1⤵
                                    PID:4164
                                  • C:\Windows\system32\svchost.exe
                                    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                    1⤵
                                      PID:3028
                                    • C:\Windows\System32\rundll32.exe
                                      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                                      1⤵
                                        PID:4040
                                      • C:\Users\Admin\Downloads\RTGS\RTGS.cmd
                                        "C:\Users\Admin\Downloads\RTGS\RTGS.cmd"
                                        1⤵
                                        • Drops startup file
                                        • System Location Discovery: System Language Discovery
                                        • Suspicious use of SetWindowsHookEx
                                        PID:5192
                                        • C:\Windows\SysWOW64\cmd.exe
                                          cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
                                          2⤵
                                          • System Location Discovery: System Language Discovery
                                          PID:1148
                                        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jvkfvrfk.exe
                                          "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jvkfvrfk.exe"
                                          2⤵
                                          • Executes dropped EXE
                                          • System Location Discovery: System Language Discovery
                                          • Suspicious use of SetWindowsHookEx
                                          PID:4680

                                      Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

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                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\85f9798f-c4fb-4614-966e-690710c7bff6.tmp

                                        Filesize

                                        81KB

                                        MD5

                                        3e5663ede683b87cd7eeb2ce314c7b00

                                        SHA1

                                        3ca1c49423df3a30183811614c8eb1bc7713f4e4

                                        SHA256

                                        9ae44f25aa9233f7993135f3a181290f1d5ee0497fda31b0ca0e22ba41843e47

                                        SHA512

                                        10b782b1fc245535b35827919d4d27198defb25c1902a9630bb38b7265c4f5c7825656a2e65a635908805ed2d5308dc4c382a38bfa67f9db3479fffc36a587d8

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                                        Filesize

                                        414B

                                        MD5

                                        5eb76109bdcfdc0934f189e3f7aa6dd6

                                        SHA1

                                        63543e103aaa61eab674fbd9bcb3a5cca57bae01

                                        SHA256

                                        481ae0add1926dae2433c344738e03fb6043435a2337b0e2eaee9dfaa015af9c

                                        SHA512

                                        946365ba4c4512cc528d2327ec5d90c3c80dc6521a9562cb1d7f9715ef0988ff965e9061fd6eb6a5ee74389385fe36910008f40f1e3f053537ffcc76b475fb95

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State

                                        Filesize

                                        2KB

                                        MD5

                                        6c2739904ed17ef272b1640c7b3a9d9e

                                        SHA1

                                        9ac3bc658414058da881e94e9684b6937b7b40ac

                                        SHA256

                                        eb0da4794b8d4559d859bae993a4ff7910945853d3eaea6916fb1e6db14f2f66

                                        SHA512

                                        48b1b5566b1a168d63155694c9b42d1f11469a74eb8518dfbf8869e578afce9f4ff20743ede2ebc59182dbf108f360a93556f55501543a492c1984e26aacd67f

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                                        Filesize

                                        2B

                                        MD5

                                        d751713988987e9331980363e24189ce

                                        SHA1

                                        97d170e1550eee4afc0af065b78cda302a97674c

                                        SHA256

                                        4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                                        SHA512

                                        b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                        Filesize

                                        10KB

                                        MD5

                                        63394699d3a153e4b081a9a3518ae759

                                        SHA1

                                        3377a07d2a54a914007601ebedfda755a498f470

                                        SHA256

                                        43b0730a47ad19c5878f4afb26ff8348c2f1f22b72d7baa4454da519dba46ef9

                                        SHA512

                                        34cdbb359f3f4dd8291a9408e94fec1bbf408e20d433f1c23ab28d57713b0a0063dcf3e812c698bc3a72a0569de6d4ece68f90e2d9637f82b431b7feea21613b

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences

                                        Filesize

                                        15KB

                                        MD5

                                        0e041b8beb62109bc612bd433aecbfbd

                                        SHA1

                                        15b0515597c527f32376c2faf6d7f4084d208ab8

                                        SHA256

                                        749129b2c7e5e151a012ba92a99b29c216369146a1469915fb7d4eaa4c1700f2

                                        SHA512

                                        f8581544274d402fb6345c08b1bc8972b9156218704e2bed646a61e2af28029072a8c9eab331475d60647b2648f827d93b6eee8d386acb3c1fa14c35678f5573

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index

                                        Filesize

                                        72B

                                        MD5

                                        2231f046df12847a15265df17790c71d

                                        SHA1

                                        2dbbb0998f9ab9b62f2b63e011f8390e867d9bc7

                                        SHA256

                                        aed7a55c6963a5554fda9cd82f54300ef9eb2292736c81498617a8ff84e732ea

                                        SHA512

                                        82e77ad27037c922b41a014fc11a8dd4e87b67c598ac9e40edc44a26ee027f48130ad15227bcfbb8d88dc83cc1693a91e1165f960aafe805bd391443bd19a623

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe57db3d.TMP

                                        Filesize

                                        48B

                                        MD5

                                        83087ffcf71a32dfbcddc76d56bba3f9

                                        SHA1

                                        e5b01a5da21ed4e14274cbb24c562d0037b8b619

                                        SHA256

                                        10058ed62a668cc87d5e33222559ed4f231f3379bcde5a597475dc89b3fb7c1f

                                        SHA512

                                        57061e2d8c1c728e9a41522dffe8a889de62a459ebd9ffba31dfc52e010c0733c2589309c177faaa5d86e0c22d9968d78b868108b4256cb88abe0b66e32d831d

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                        Filesize

                                        81KB

                                        MD5

                                        7fcf771d56e0c2e763c2075e7f82c8ab

                                        SHA1

                                        3cd99ee27bdf58cc9b886ee99445e7988aa607ec

                                        SHA256

                                        2951c93ae5b115530ff979524ed44f2082033af978e489a347d7979c7ada0eed

                                        SHA512

                                        faf5a665cb32b92eea8b6192dcba239b42a1f3dd645f7ecf6c152ccbb4ff6d99036431e381aa06e4c4168bc465f00595de48afee9129dd35eb20b5feedc3f044

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                        Filesize

                                        80KB

                                        MD5

                                        bab0dd2bd106f1eee0a1a7f39136294c

                                        SHA1

                                        d349b3c5efcb6ae02ae5aedd23d6e96e3a02eecd

                                        SHA256

                                        42e953dd25c33a3e3630fb925d7308fad381b89afa9dd3461c9cc08cfe839238

                                        SHA512

                                        5520522e42b0f37715d3451ff2223df70218c6964e353d56088c9b365418f48b55bd47ac0c57515dee176e86cded3ba1f1c33965907f7b530831a2fcde086adb

                                      • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                        Filesize

                                        81KB

                                        MD5

                                        ba77f26f2614384b02d4d364086cf90e

                                        SHA1

                                        21668de274a3ff3acc42c14d5094c24dae5a70cd

                                        SHA256

                                        c1bfeca5263bc31d0b8e1215c107eaa4c742477dc80dc8feb5f9817c924afba4

                                        SHA512

                                        9e0617b5023ec64b4f12bf48a254f44f82bb6c8a2d75cb0b67e1c6c6f950620dac05c1a44aa930c34f32ac82e6e003d9d2d818ae72b6f8df3f94e0835f2d829e

                                      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jvkfvrfk.exe

                                        Filesize

                                        500KB

                                        MD5

                                        8092b76f06d46ae065e8334fa8f26234

                                        SHA1

                                        473dd2cf98b6ace253d83191389cba86d306b94c

                                        SHA256

                                        b4c2077be7a4185869fb91d5f651eb30e53f3eb31c35dee36a85101dc9d612ab

                                        SHA512

                                        1701121fcb0de54592f9c26431258f18276a9f0597cabc7b09553686c913ef5ab9fd2590f9b2f7e8edb671baaff18cf5a5939eb2caea77481fa80e959bf2d0f9