Analysis

  • max time kernel
    134s
  • max time network
    129s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-05-2024 00:52

General

  • Target

    https://streamz.b-cdn.net/K2.zip

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 34 IoCs
  • Suspicious use of SendNotifyMessage 12 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Files\Google\Chrome\Application\chrome.exe" --disable-background-networking --disable-component-update --simulate-outdated-no-au='Tue, 31 Dec 2099 23:59:59 GMT' --single-argument https://streamz.b-cdn.net/K2.zip
    1⤵
    • 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:3876
    • 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:7 --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=110.0.5481.104 --initial-client-data=0x100,0x104,0x108,0xdc,0x10c,0x7ff98bd0ab58,0x7ff98bd0ab68,0x7ff98bd0ab78
      2⤵
        PID:1904
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1680 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:2
        2⤵
          PID:716
        • 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 --mojo-platform-channel-handle=2056 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
          2⤵
            PID:908
          • 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 --mojo-platform-channel-handle=2152 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
            2⤵
              PID:3592
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=3016 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:1
              2⤵
                PID:4912
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=3036 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:1
                2⤵
                  PID:5084
                • 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 --mojo-platform-channel-handle=4672 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
                  2⤵
                    PID:2320
                  • 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 --mojo-platform-channel-handle=4796 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
                    2⤵
                    • NTFS ADS
                    PID:4304
                  • 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 --mojo-platform-channel-handle=4876 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
                    2⤵
                      PID:2060
                    • 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 --mojo-platform-channel-handle=4024 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:8
                      2⤵
                        PID:1528
                      • 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=10.0.22000.1 --gpu-preferences=UAAAAAAAAADoAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAACQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=4036 --field-trial-handle=1788,i,9864584554829073703,10332171110423654227,131072 /prefetch:2
                        2⤵
                        • Suspicious behavior: EnumeratesProcesses
                        PID:4640
                    • C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe
                      "C:\Program Files\Google\Chrome\Application\110.0.5481.104\elevation_service.exe"
                      1⤵
                        PID:1432
                      • C:\Windows\System32\rundll32.exe
                        C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
                        1⤵
                          PID:3680
                        • C:\Program Files\7-Zip\7zG.exe
                          "C:\Program Files\7-Zip\7zG.exe" x -o"C:\Users\Admin\Downloads\K2\" -spe -an -ai#7zMap24023:66:7zEvent29293
                          1⤵
                          • Suspicious use of FindShellTrayWindow
                          PID:2060
                        • C:\Users\Admin\Downloads\K2\lnstall.exe
                          "C:\Users\Admin\Downloads\K2\lnstall.exe"
                          1⤵
                          • Executes dropped EXE
                          PID:4072

                        Network

                        MITRE ATT&CK Enterprise v15

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

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

                          Filesize

                          1KB

                          MD5

                          1d85e530c6b523ff82ad8d41467b0a48

                          SHA1

                          ff590a70b1d0ce3a8f8e5193cacc8f1e2230b5de

                          SHA256

                          f55b819e32271730ac57569a11fdfa2bc8028b9a7306fbd109c3e6673bd73246

                          SHA512

                          9b29647123121c7e1f8ac08c94cde2cd072098a91e844d31025e98675b7188da4d89c39f4279722922ce6f426adbc8aaad04d6ba93b859ad814cdec644a871e1

                        • 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

                          7KB

                          MD5

                          41604caba1c5017973652944bca9b60c

                          SHA1

                          d19557760ca741bcb6ffa92f27389f060e941f55

                          SHA256

                          02ef4398e8b202f40dd569330197bf70bb14cb03a43da911b30d9d9956f2feff

                          SHA512

                          f09b614257895126e076c1c63a01ade0c317896ee3e16befac6bff468a24bf7212d38601b1e270c5acea841d33740e570ec561eaf9e17043fb29a590f34cbb2e

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

                          Filesize

                          130KB

                          MD5

                          90ac8ca28be0642a0a21069bd5dce279

                          SHA1

                          db23190ae77ee8cf56c615fa6d4450c05fb948d7

                          SHA256

                          5f1132a759a076d7116193de018b6c6ca35371196adce8d6a0a3fab85f98d831

                          SHA512

                          e89f12831dae7b3ab69de06a4f18177d1cd4f2fb87959fe2f9ec89333b9544f1fa1f111a1af04f07c1deb77195b27d1fd0385fd5d17bb60f63e1d112dac756e8

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache

                          Filesize

                          94KB

                          MD5

                          d4a963764535d829298bfe61b9554b87

                          SHA1

                          7fd01fe6d03c96e9099f728740b84b21f10588c2

                          SHA256

                          27226a92fe295f5809607d3ffcdefcb14bf9c3b15e0534ed6f5fb96452147586

                          SHA512

                          3616772decc7f6c3ec2c0bb61423cd5f5edc98ca24c0504a7bbd5840c5e408862e97bd49d53670af012d1957f89511315a678921bd402295e1f910686109ca24

                        • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Module Info Cache~RFe5902b5.TMP

                          Filesize

                          87KB

                          MD5

                          6e490b30076d33873d28ea26b98b3971

                          SHA1

                          ce3f006168c4d5fff8654460007dceff98835748

                          SHA256

                          2b7c01280324e5b2788b2cad82c33c35a0c71da926eff47e75c1c486cd6cba47

                          SHA512

                          7e518d040743549b459e898aa26e49bf42c158390d7a1d375c1eb4b2aec65a84e83e24f1af100d6350b6b1d9720b28407d47f0aad0008501948547bc7beb5ed5

                        • C:\Users\Admin\Downloads\K2.zip.crdownload

                          Filesize

                          875KB

                          MD5

                          2190a3cd216ef98fa9816bf8a7c66787

                          SHA1

                          3b87f6cf85fc240c063909019e74fca9aa876b5e

                          SHA256

                          64c44396ea255d0b42efe7fc20f53124bd0fc35204b3f71f094150c44a247dc9

                          SHA512

                          d6b1a448c21870915306cb52be2edfe23619e6ec833aec6f4b3fac7c299921ead559eb1e4d7c23bebe7d7ca6a7d58bbd029a3eb679ef61e6a53720d12a7c4d78

                        • C:\Users\Admin\Downloads\K2.zip:Zone.Identifier

                          Filesize

                          68B

                          MD5

                          ee70ad52813e418fb671743083d34d5b

                          SHA1

                          a8dd9699f3128ebe9223d2ed0d703f67ec18a6cd

                          SHA256

                          e16895d1628876c8f66e58dadd29b5f463dfe0fb7e25462c9c8edefad0f4e8f7

                          SHA512

                          410b592d4483c0e140e6bc9fc9f65e46657b00abd924129b8e26926a6149e8be95d3e8ad95855fd19fbc537f1cb48d123a68a64724ad9b40986cd739444eee28

                        • C:\Users\Admin\Downloads\K2\lnstall.exe

                          Filesize

                          1.8MB

                          MD5

                          098ac4621ee0e855e0710710736c2955

                          SHA1

                          ce7b88657c3449d5d05591314aaa43bd3e32bdaa

                          SHA256

                          46afbf1cbd2e1b5e108c133d4079faddc7347231b0c48566fd967a3070745e7f

                          SHA512

                          3042785b81bd18b641f0a2b5d8aec8ef86f9bf1269421fb96d1db35a913e744eaff16d9da7a02c8001435d59befb9f26bc0bbfa6e794811abf4282ed68b185fe

                        • \??\pipe\crashpad_3876_YRGCCVOBDDINHNSD

                          MD5

                          d41d8cd98f00b204e9800998ecf8427e

                          SHA1

                          da39a3ee5e6b4b0d3255bfef95601890afd80709

                          SHA256

                          e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

                          SHA512

                          cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e