Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2023 22:15

General

  • Target

    https://2023-refund-letter.info/

Score
1/10

Malware Config

Signatures

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://2023-refund-letter.info/
    1⤵
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2040
    • 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,0x100,0x104,0xd8,0x108,0x7fff719146f8,0x7fff71914708,0x7fff71914718
      2⤵
        PID:1236
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2052 /prefetch:2
        2⤵
          PID:1200
        • 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=2044,18206933860716450610,17865260574999814509,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2528 /prefetch:3
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:2072
        • 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=2044,18206933860716450610,17865260574999814509,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2784 /prefetch:8
          2⤵
            PID:3312
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3360 /prefetch:1
            2⤵
              PID:3916
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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=3488 /prefetch:1
              2⤵
                PID:4836
              • 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=2044,18206933860716450610,17865260574999814509,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5536 /prefetch:8
                2⤵
                  PID:3480
                • 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=2044,18206933860716450610,17865260574999814509,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5536 /prefetch:8
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1248
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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=5580 /prefetch:1
                  2⤵
                    PID:3472
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5628 /prefetch:1
                    2⤵
                      PID:4868
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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=3356 /prefetch:1
                      2⤵
                        PID:4500
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=6008 /prefetch:1
                        2⤵
                          PID:3408
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2044,18206933860716450610,17865260574999814509,131072 --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 --gpu-preferences=UAAAAAAAAADoAAAQAAAAAAAAAAAAAAAAAABgAAAEAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=4980 /prefetch:2
                          2⤵
                          • Suspicious behavior: EnumeratesProcesses
                          PID:2352
                      • C:\Windows\System32\CompPkgSrv.exe
                        C:\Windows\System32\CompPkgSrv.exe -Embedding
                        1⤵
                          PID:2216
                        • C:\Windows\System32\CompPkgSrv.exe
                          C:\Windows\System32\CompPkgSrv.exe -Embedding
                          1⤵
                            PID:3696

                          Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

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                          Downloads

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat

                            Filesize

                            152B

                            MD5

                            6dded92ec95cf9f22410bdeac841a00d

                            SHA1

                            83c32c23d53c59d654868f0b2a5c6be0a46249c2

                            SHA256

                            1840d5c60c79874359414677662439087173c575d814c07ebe661ae1cebb639e

                            SHA512

                            e13df653c0364be2b61619fe3d46799e10a565b41f33d3ce15e50397f8f9aa328e8c821212efe10cfe3b8283c1e8c7e9eb15f9674fc456837d6ee8c38bc8b0d8

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                            Filesize

                            72B

                            MD5

                            e14c1e7498095a5a2e22e70cabc4590e

                            SHA1

                            97a5a716b8a842eedcdefa15b94f384888facc84

                            SHA256

                            9dda9504eb0d3ba61f4d31cbf7a308fdf300cb81603eaad506993a2c5e8d003e

                            SHA512

                            8aa9f36cd4ce6e87bc6ec8b3e18b54a98c2cd659f61d5579969dcc7f99b483a9f7f5fbf07c5afb4833120f8fae1ce1aa807ab2139e5d04bb5c263b3983ed4b65

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Code Cache\js\index-dir\the-real-index

                            Filesize

                            72B

                            MD5

                            518aec049c047f69fc270e3f5a83ac41

                            SHA1

                            225c9d0e2aa21ab0e1f2fb260ad747657eba8609

                            SHA256

                            cc059edfe7b4ab0539f1d46917f284b9ceb12d93af9f710f8ad7d24debcd6e99

                            SHA512

                            738f677eb45fef812537e6fe926c69a6a977414e2f5e5022c7075e41a9c5ee7eb6301998b0ee08e7688b690fb31979e0d729c46a046abf1d7b81820e084e089f

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                            Filesize

                            111B

                            MD5

                            285252a2f6327d41eab203dc2f402c67

                            SHA1

                            acedb7ba5fbc3ce914a8bf386a6f72ca7baa33c6

                            SHA256

                            5dfc321417fc31359f23320ea68014ebfd793c5bbed55f77dab4180bbd4a2026

                            SHA512

                            11ce7cb484fee66894e63c31db0d6b7ef66ad0327d4e7e2eb85f3bcc2e836a3a522c68d681e84542e471e54f765e091efe1ee4065641b0299b15613eb32dcc0d

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                            Filesize

                            938B

                            MD5

                            0ba5c18f2278747c4126ac01c42cf4ba

                            SHA1

                            347d522d05fd7a9802efcf6e78bd2f372ecfd0a9

                            SHA256

                            0601101b6ace77a78915136b7208168a66db55a8ff01d1bc92ccc86baa1f573f

                            SHA512

                            6776effc73dd211ccfa32d49aef5f9571f24122de56103deaee6a558f88e98556087f3cd1302633bdd7d2d88268baaad1b833bfd0f2c165d62c947145f709d54

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network Persistent State

                            Filesize

                            876B

                            MD5

                            a47e64625a594b26e75af9eb520ab062

                            SHA1

                            3c6c178a13db693902eda5a0c19f547059e23a9c

                            SHA256

                            2a7d839c46870de8b0dc53c5fa54db3803cf7277bd4d4e66b1dc9303b5326b05

                            SHA512

                            fa7fd54f5f9e38cce6f4ec19ca32643e79f2d2eeb7c43d4cc2bcf28d749d2b723b185a5b982cdb2205bbd39c27667090074950b3e29977a79a3cd1f28bc6ffda

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                            Filesize

                            5KB

                            MD5

                            41c5bb265beacdd5e158dcabfd935e97

                            SHA1

                            543ce2b21a68ee509c512a3f2516770c71c357a1

                            SHA256

                            68121813148f877b7b234bf8b116c350649ad31d0a0c26794ef190a449a6e083

                            SHA512

                            988979bce50f4a516868c5372e212f20295274cd4f104eb7d32acc37f8127754b0c51265dd9237bf39f4ebe097abe5955d2461f7118e2bc4e2d2a0ae2132d155

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                            Filesize

                            5KB

                            MD5

                            e0813925ad86b690899d1696a23cbcf1

                            SHA1

                            8c8a7634ef64361df431f8de5d6ab9547041911d

                            SHA256

                            c87105bc5468fcc0fa179f640069d1b9794283098571e598fd3e53897437933d

                            SHA512

                            a0c4a193da4f05c71728e4b7b190edb9d878d2ad35bbe3515599ec60e893207ea1856d1cb0ae0d5a1f2248cad9f33b6175d075833cab27fbd2617a807110dad0

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                            Filesize

                            5KB

                            MD5

                            17e4d38404c617b7dc1077d3c689175e

                            SHA1

                            10b4ac87272ff009f8222074d6663444bfaad7ab

                            SHA256

                            d7c2cd0c1986f57f932c279b34d1e028e793c5669a9233b31a6949063a414a3c

                            SHA512

                            ed05ee0043ff549d661aa3dce3d35dece00403bb19caf23e08c528150041f8fd03eb6742a493c0befb787ae28f3b3911d71da058a2b1670f776d70a31a87de86

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences

                            Filesize

                            5KB

                            MD5

                            6d192fdfda18cc553c948111e724d26a

                            SHA1

                            eb156e0775c4b2979f51028c3c83bf16ef05ea76

                            SHA256

                            22258c9b834f338e30020289be467eae0810a52b6997eb61aba6c12f79ee354b

                            SHA512

                            317a13618fd74ffa4b009c3393ad578bdcf3fa774e54198c99c68e7f6fa0784b5caa4cea7400af9b3f6ddb60c9acee69acf98667c3c2594319cfc2bbf4c83499

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Secure Preferences

                            Filesize

                            24KB

                            MD5

                            e05436aebb117e9919978ca32bbcefd9

                            SHA1

                            97b2af055317952ce42308ea69b82301320eb962

                            SHA256

                            cc9bd0953e70356e31a957ad9a9b1926f5e2a9f6a297cdef303ac693a2a86b7f

                            SHA512

                            11328e9514ffaa3c1eab84fae06595d75c8503bd5601adfd806182d46065752885a871b738439b356d1bb2c1ac71fc81e9d46bd2d0daa1b2ba0f40543bf952b9

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT

                            Filesize

                            16B

                            MD5

                            6752a1d65b201c13b62ea44016eb221f

                            SHA1

                            58ecf154d01a62233ed7fb494ace3c3d4ffce08b

                            SHA256

                            0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd

                            SHA512

                            9cfd838d3fb570b44fc3461623ab2296123404c6c8f576b0de0aabd9a6020840d4c9125eb679ed384170dbcaac2fa30dc7fa9ee5b77d6df7c344a0aa030e0389

                          • C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\c8d063d5-f212-47d8-9103-c24ed824d9ef.tmp

                            Filesize

                            10KB

                            MD5

                            c8f3187eaa570fe44777c2e89857096e

                            SHA1

                            593ff2379a8022e9a8c7c4d4f1b7b040cfe5d749

                            SHA256

                            ef652b05ce79805354fc7b1e63077f767d77463aa455ac6d425d7740970d0a21

                            SHA512

                            34c87b6711e7f610208ccb96339fe65fbf56b0c5bd2559ca675c2c5ac3ae01278d9319dcf6a1598055b60bb5f14af534909b365953c71a3793adcc602ad3719c