Analysis

  • max time kernel
    135s
  • max time network
    136s
  • platform
    windows10-1703_x64
  • resource
    win10-20240221-en
  • resource tags

    arch:x64arch:x86image:win10-20240221-enlocale:en-usos:windows10-1703-x64system
  • submitted
    25/02/2024, 16:36

General

  • Target

    Windows10Upgrade9252.exe

  • Size

    3.2MB

  • MD5

    c0b25def4312fbddbcc4f01c6c0f5ba6

  • SHA1

    8d16a183d61233e7d6b6af7b3cafc6645ac2acb1

  • SHA256

    c0424d0ae06ca1e6e0249b40d33ac40d74075856d543ec0924884664fba52b79

  • SHA512

    8c67619747bb108dae5661688ec8fa4c62bc6ac38ee6ff14a4691aab04d7ddd870fee4262cb30624a6bd85ac1f7595af05311496b0336f979e7e5f797791bc0e

  • SSDEEP

    98304:GgjXlctych4cCzJ8k2omX8sUf0ht5f/LyXtcH/:JjKtych9CzJqXM32jyX

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 26 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 8 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Windows10Upgrade9252.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows10Upgrade9252.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:208
    • C:\Program Files (x86)\WindowsInstallationAssistant\Windows10UpgraderApp.exe
      "C:\Program Files (x86)\WindowsInstallationAssistant\Windows10UpgraderApp.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:1844
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1844 -s 1692
        3⤵
        • Program crash
        PID:868
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:3100
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4276
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe"
        2⤵
        • Checks processor information in registry
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4228
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.0.958731844\1987722071" -parentBuildID 20221007134813 -prefsHandle 1716 -prefMapHandle 1708 -prefsLen 20747 -prefMapSize 233444 -appDir "C:\Program Files\Mozilla Firefox\browser" - {a773208d-bab5-4b07-aaf5-4a3e844ecd07} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 1792 195ca2da158 gpu
          3⤵
            PID:1792
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.1.1692596769\135270743" -parentBuildID 20221007134813 -prefsHandle 2120 -prefMapHandle 2116 -prefsLen 20828 -prefMapSize 233444 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d0a66c6c-18ee-451b-bed8-fbc57c7a4903} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 2148 195bf172858 socket
            3⤵
            • Checks processor information in registry
            PID:220
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.2.1365270589\1204890083" -childID 1 -isForBrowser -prefsHandle 2812 -prefMapHandle 2688 -prefsLen 20866 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {c67121cc-a061-478b-894b-6f47fb5aebac} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 2936 195ca25f958 tab
            3⤵
              PID:4552
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.3.1385961693\859577479" -childID 2 -isForBrowser -prefsHandle 3552 -prefMapHandle 3532 -prefsLen 26109 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {d307aa3c-576a-4d0f-9fb8-e2567f7cb425} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 3564 195bf161c58 tab
              3⤵
                PID:4944
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.4.1232690967\1612398859" -childID 3 -isForBrowser -prefsHandle 4148 -prefMapHandle 4128 -prefsLen 26168 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {c9e479ee-5f8f-4b22-9d75-414f4bbf0781} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 3684 195cff88758 tab
                3⤵
                  PID:1320
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.7.820642749\1380210601" -childID 6 -isForBrowser -prefsHandle 5188 -prefMapHandle 5192 -prefsLen 26168 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {553b2126-8d1f-460a-bb1f-3e4f25a02f69} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 5272 195d12dce58 tab
                  3⤵
                    PID:4764
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.6.90793676\60859145" -childID 5 -isForBrowser -prefsHandle 4992 -prefMapHandle 4996 -prefsLen 26168 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {2336eefb-a1c3-4ced-bf94-75c909f2c1fe} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 5076 195d0397558 tab
                    3⤵
                      PID:4396
                    • C:\Program Files\Mozilla Firefox\firefox.exe
                      "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.5.2058500908\2145064983" -childID 4 -isForBrowser -prefsHandle 4824 -prefMapHandle 4828 -prefsLen 26168 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {e7ffed40-6d83-4368-938e-fd855d6e219c} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 4816 195bf12fc58 tab
                      3⤵
                        PID:2676
                      • C:\Program Files\Mozilla Firefox\firefox.exe
                        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="4228.8.1869312919\441661582" -childID 7 -isForBrowser -prefsHandle 5696 -prefMapHandle 5692 -prefsLen 26249 -prefMapSize 233444 -jsInitHandle 1296 -jsInitLen 246848 -a11yResourceId 64 -parentBuildID 20221007134813 -appDir "C:\Program Files\Mozilla Firefox\browser" - {180b880a-93c2-4ff0-ae6f-b1c55ffe5798} 4228 "\\.\pipe\gecko-crash-server-pipe.4228" 5704 195d2229b58 tab
                        3⤵
                          PID:1460

                    Network

                          MITRE ATT&CK Enterprise v15

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          • C:\Program Files (x86)\WindowsInstallationAssistant\Configuration.ini

                            Filesize

                            27B

                            MD5

                            ca22263c7a6f965df18f5c601f5db7ce

                            SHA1

                            e4b1a401ed497523a583ae8613646b03778a33a6

                            SHA256

                            299fa3043627954c524b6171c26fcc3513790310aa2561e6f012eff15254381c

                            SHA512

                            3cd39b438f7cb34b38f32240b1ba6a5010f49e12123db770460cf74217bc6946e2032355376c203b68863ee85596d21aa7b2d77c94da48a54def111d147311f8

                          • C:\Program Files (x86)\WindowsInstallationAssistant\Downloader.dll

                            Filesize

                            197KB

                            MD5

                            5b62ad6ae42f32806062ad1bcb3e2de5

                            SHA1

                            8d4a543eac9643931fcb620cd588e2cc1067920a

                            SHA256

                            96f7b268820511abeeb6bbfad0918cf9161366bc2f558ef7f011331e7de1d6f3

                            SHA512

                            af5bdbc5019b56eb9a32b6d264388e309e36013d43dbe09c61224ba6fabf1ff905371bc5b6ddaa0d5bfedae99cc5a7051f13fbf26cc756793799e568094eabcf

                          • C:\Program Files (x86)\WindowsInstallationAssistant\Windows10UpgraderApp.exe

                            Filesize

                            3.5MB

                            MD5

                            ab38a78503d8ad3ce7d69f937d71a99c

                            SHA1

                            00b6a6f09dd45e356ef9e2cacd554c728313fa99

                            SHA256

                            f635cd1996967c2297e3f20c4838d2f45d1535cfea38971909683e26158fb782

                            SHA512

                            fe8e4c6973cb26b863ef97d95a7ae8b1b2dbce14bf3b317d085b38347be27db1adc46f5503c110df43e032911e5b070f3e9139857573fffdafff684f27ef1b8f

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\EULA.css

                            Filesize

                            82B

                            MD5

                            b81d1e97c529ac3d7f5a699afce27080

                            SHA1

                            0a981264db289afd71695b4d6849672187e8120f

                            SHA256

                            35c6e30c7954f7e4b806c883576218621e2620166c8940701b33157bdd0ba225

                            SHA512

                            e5a8c95d0e9f7464f7bd908cf2f76c89100e69d9bc2e9354c0519bf7da15c5665b3ed97cd676d960d48c024993de0e9eb6683352d902eb86b8af68692334e607

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\default.css

                            Filesize

                            5KB

                            MD5

                            7f5fcac447cc2150ac90020f8dc8c98b

                            SHA1

                            5710398d65fba59bd91d603fc340bf2a101df40a

                            SHA256

                            453d8ca4f52fb8fd40d5b4596596911b9fb0794bb89fbf9b60dc27af3eaa2850

                            SHA512

                            b9fb315fdcf93d028423f49438b1eff40216b377d8c3bc866a20914c17e00bef58a18228bebb8b33c8a64fcaaa34bee84064bb24a525b4c9ac2f26e384edb1ff

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\default.htm

                            Filesize

                            60KB

                            MD5

                            b2a06af2867a2bb3d4b198a22f7936b3

                            SHA1

                            98a28e15abdd2d6989d667cc578bf6ab954c29f5

                            SHA256

                            40f468006ab37ef4fcc54c5ff25005644f15d696f1269f67b450c9e3ce5e8d23

                            SHA512

                            eefc295a7cd517c93bbeadee51ab778f371be8b21a92b0c06339da2e624abd19c34907e0a8965e6bfe81863752c56cc509fcf015a3ee986d208a5fc7cac8bfc5

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\loading.gif

                            Filesize

                            16KB

                            MD5

                            1a276cb116bdece96adf8e32c4af4fee

                            SHA1

                            6bc30738fcd0c04370436f4d3340d460d25b788f

                            SHA256

                            9d9a156c6ca2929f0f22c310260723e28428cb38995c0f940f2617b25e15b618

                            SHA512

                            5b515b5975fda333a6d9ca0e7de81dbc70311f4ecd8be22770d31c5f159807f653c87acf9df4a72b2d0664f0ef3141088de7f5aa12efc6307715c1c31ba55bb6

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\logo.png

                            Filesize

                            2KB

                            MD5

                            afeed45df4d74d93c260a86e71e09102

                            SHA1

                            2cc520e3d23f6b371c288645649a482a5db7ccd9

                            SHA256

                            f5fb1e3a7bca4e2778903e8299c63ab34894e810a174b0143b79183c0fa5072f

                            SHA512

                            778a6c494eab333c5bb00905adf556c019160c5ab858415c1dd918933f494faf3650e60845d557171c6e1370bcff687672d5af0f647302867b449a2cff9b925d

                          • C:\Program Files (x86)\WindowsInstallationAssistant\resources\ux\marketing.png

                            Filesize

                            420B

                            MD5

                            0968430a52f9f877d83ef2b46b107631

                            SHA1

                            c1436477b4ee1ee0b0c81c9036eb228e4038b376

                            SHA256

                            b210f3b072c60c2feb959e56c529e24cec77c1fcf933dcadad1f491f974f5e96

                            SHA512

                            7a8a15524aecdb48753cc201c215df19bc79950373adc6dd4a8f641e3add53eba31d1309bf671e3b9e696616a3badce65839b211591a2eeebb9306390d81cfcf

                          • C:\Users\Admin\AppData\Local\Temp\WXU6B7B.tmp\appraiserxp.dll

                            Filesize

                            363KB

                            MD5

                            cbb270591c9a1bfb1b10559ab672f705

                            SHA1

                            fed0d59d60709b5b05b9d31030ea7a5422767a7e

                            SHA256

                            770a9a15e1eb8e2729f23a3d262b55bef16e4bb7822a2d16eeac3db35a116d7f

                            SHA512

                            67c4154d47981f22965966aa823dc0e05872b2f6d8fc7d80b4130f1cdb8bf9f326a20980e29c085e2940fc1f7b033b85d2eb192f5bda2da136364a842ea20f6a

                          • C:\Users\Admin\AppData\Local\Temp\WXU6B7B.tmp\resources\ux\Microsoft.WinJS\css\oobe-desktop.css

                            Filesize

                            39KB

                            MD5

                            5ad8ceea06e280b9b42e1b8df4b8b407

                            SHA1

                            693ea7ac3f9fed186e0165e7667d2c41376c5d61

                            SHA256

                            03a724309e738786023766fde298d17b6ccfcc3d2dbbf5c41725cf93eb891feb

                            SHA512

                            1694fa3b9102771eef8a42b367d076c691b002de81eb4334ac6bd7befde747b168e7ed8f94f1c8f8877280f51c44adb69947fc1d899943d25b679a1be71dec84

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\datareporting\glean\db\data.safe.bin

                            Filesize

                            2KB

                            MD5

                            af6af621d2edc6011aa44b0f9bac6c90

                            SHA1

                            85f2ccc3d3044182bb71288616c7a5c8ead5320f

                            SHA256

                            8449ff51d648c721a43928b86f55e7b997e9e0879e807566e5e3c797e15fd0bd

                            SHA512

                            551ccd1d47c5195cfa28fd47ab3d2f5c6ab540f95d8a8e7422b69b408d3ebe70d039c3f1244acbadbbd7b5894029d6b3e2b591bebc19b4ea858a818d2c3dc4ed

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\datareporting\glean\pending_pings\4e0769b4-8613-412d-a716-f2be08766d7f

                            Filesize

                            746B

                            MD5

                            f6e0a45f52d211c82fe7fa2294207c7e

                            SHA1

                            282b655934ab81219023ef36bafa28ed8c9ed721

                            SHA256

                            51be47a38ab668501cf6ca9bca33c1ead6982c840295cbbd9e4be8a0ff449255

                            SHA512

                            adb940f6199e0367cee257d603edc8031c551162df40821c64b03e3ad8d24068da6e4c140c3c86f2f5cea005be140a6280e3bb32784830d730e42edff44ffaca

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\datareporting\glean\pending_pings\6f9be7be-5aad-4a27-9653-a369082ca26e

                            Filesize

                            10KB

                            MD5

                            a3add01dc21ccf7fb29f611d7d56d666

                            SHA1

                            7322bd4d84598ea0c423d20a07a24d87ef779488

                            SHA256

                            43db37475a1acc3bc3680ee56686871468d99fc2820acf3685e617d765811402

                            SHA512

                            22efc4c1cb73cb507b16fed692783a5f0b1af51168591c07784a2bfad37363003e7ba3bd9341fc298e8960a95f0aea20c806735a55042c036e415009006abdb4

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\prefs-1.js

                            Filesize

                            6KB

                            MD5

                            e227e256d490a3e0a48e5defc1b8065b

                            SHA1

                            a8d1f1d6591454b8643b3c9fe482fd4b6ede226a

                            SHA256

                            1566dfdf047a069e016df27b356f93a3eaa1f1e526a52f874f0b33bfe4f53de3

                            SHA512

                            3cfe3a014e9fcf1c44593837e5d30e2322504dcaf95bf1a3cd44b8960423df7b28293fc2250be187ff2534ec17f61ff318fca1bba72002192191a4bf12be53f6

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\sessionstore-backups\recovery.jsonlz4

                            Filesize

                            3KB

                            MD5

                            1b1b1d8cb82e1cda362cf34823c88f7b

                            SHA1

                            f6189608fe1b5f536e2d81c2d0ad829e92be81d6

                            SHA256

                            5ae0f626633f9300b6fb40c8853ab81c8392d41ae1ee38b8b8d2452039a53e0d

                            SHA512

                            9213fe07684f5ceb2a29f9573785f45973958c53961ae9afa783ada98430090a055c9e2da39ee92b6e083eb5ea8c3e3c6b1dce3c711051f240419c7a931b7078

                          • C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\p7jdwo0d.default-release\sessionstore.jsonlz4

                            Filesize

                            4KB

                            MD5

                            f4f6d484d9b320c22696936afbf0ff05

                            SHA1

                            649ea85edc9ce029a58aad09f375f81539e3d363

                            SHA256

                            8609a3ba88b34ccb4cf8e283edf753b4d00ba5e8311fad56484ed28143ae0b2b

                            SHA512

                            9299f0405bd3f86aaa1f08b7ef93939e1963133b9e1b9ae75466d95716e919a137e9d1bafa1eb0e02804794b7972f270b5122e9634895d08c15024fa991b5ff6