Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/08/2026, 07:21

General

  • Target
    Madium Executor_65415963.exe
  • Size 702KB
  • Sample260802-h64srseh93
  • SHA256 35d5cdf23553b14ad8051f68b1af8199805f06479391888f609af4ed54ed5a63
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Downloads MZ/PE file 3 IoCs
  • Executes dropped EXE 9 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Enumerates connected drives 3 TTPs 4 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 6 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Madium Executor_65415963.exe
    "C:\Users\Admin\AppData\Local\Temp\Madium Executor_65415963.exe"
    1⤵
    • Downloads MZ/PE file
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3868
    • C:\Users\Admin\AppData\Local\OperaGX_65415963.exe
      C:\Users\Admin\AppData\Local\OperaGX_65415963.exe --silent --allusers=0
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:6128
      • C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe
        C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe --silent --allusers=0 --server-tracking-blob=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
        3⤵
        • Downloads MZ/PE file
        • Executes dropped EXE
        • Enumerates connected drives
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:5940
        • C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe
          C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win64 --annotation=prod=OperaDesktopGX --annotation=ver=133.0.5932.109 --initial-client-data=0x2a8,0x2ac,0x2b0,0x288,0x2b4,0x7ff7d235cd88,0x7ff7d235cd94,0x7ff7d235cda0
          4⤵
          • Executes dropped EXE
          PID:1980
        • C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\installer.exe" --version
          4⤵
          • Executes dropped EXE
          PID:1520
        • C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe
          "C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe" --backend --install --import-browser-data=0 --enable-crash-reporting=1 --enable-stats=1 --enable-installer-stats=1 --consent-given=0 --general-interests=0 --general-location=0 --personalized-content=0 --personalized-ads=0 --launchopera=1 --showunbox=0 --installfolder="C:\Users\Admin\AppData\Local\Programs\Opera GX" --profile-folder --language=en --singleprofile=0 --copyonly=0 --allusers=0 --setdefaultbrowser=0 --pintotaskbar=1 --pintostartmenu=0 --run-at-startup=1 --server-tracking-data=server_tracking_data --initial-pid=5940 --package-dir-prefix="C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_20260802082335" --session-guid=7b4e08e2-fb8a-42b8-95fb-c04e531650e0 --server-tracking-blob=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 --silent --desktopshortcut=1 --wait-for-package --initial-proc-handle=CC07000000000000
          4⤵
          • Executes dropped EXE
          • Enumerates connected drives
          • Enumerates system info in registry
          • Suspicious use of WriteProcessMemory
          PID:5868
          • C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe
            C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win64 --annotation=prod=OperaDesktopGX --annotation=ver=133.0.5932.109 --initial-client-data=0x2b4,0x2b8,0x2bc,0x288,0x2c0,0x7ff7d235cd88,0x7ff7d235cd94,0x7ff7d235cda0
            5⤵
            • Executes dropped EXE
            PID:2324
        • C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\Opera_GX_assistant_132.0.5905.28_Setup.exe_sfx.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\Opera_GX_assistant_132.0.5905.28_Setup.exe_sfx.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:5596
        • C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\assistant_installer.exe" --version
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Enumerates system info in registry
          • Suspicious use of WriteProcessMemory
          PID:2680
          • C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\assistant_installer.exe
            "C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\assistant_installer.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktopGX --annotation=ver=132.0.5905.28 --initial-client-data=0x24c,0x250,0x254,0x228,0x258,0xb84b80,0xb84b8c,0xb84b98
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • System Location Discovery: System Language Discovery
            PID:2564

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        8A7891822FCFF127E4EADADE9757112B

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8A7891822FCFF127E4EADADE9757112B
        • Size 2KB
        • SHA256 ac0e2f34a238928fb79d7699b63cb6c03167c85e0a365a6edc13e0440090db20
        • MD5 SHA1 SHA512 TLSH

        8B2B9A00839EED1DFDCCC3BFC2F5DF12

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 1KB
        • SHA256 63b14543360f5e89942ea8d5113526e64fbc71c1207328f0136b3a495d921dd0
        • MD5 SHA1 SHA512 TLSH

        B46811C17859FFB409CF0E904A4AA8F8

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
        • Size 528B
        • SHA256 d2bb091268ade68ad8121d2184d0fbce128070156304bd4de312e6fbd267409c
        • MD5 SHA1 SHA512 TLSH

        8A7891822FCFF127E4EADADE9757112B

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8A7891822FCFF127E4EADADE9757112B
        • Size 246B
        • SHA256 d9cbfadbc7f2fb38d5fe3b511c3fbb7650efe225eb0776929b982870b7336492
        • MD5 SHA1 SHA512 TLSH

        8B2B9A00839EED1DFDCCC3BFC2F5DF12

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 174B
        • SHA256 41934aa1ac4d4559766bbc41fd612ddb3497544ea0053fbcc1386d1154474d3c
        • MD5 SHA1 SHA512 TLSH

        B46811C17859FFB409CF0E904A4AA8F8

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 5c34ef06ef3b095097e966e315b4d822dd7b05eca2f3058fc4339982f7ec4d9f
        • MD5 SHA1 SHA512 TLSH

        OperaGX_65415963.exe

        • Path C:\Users\Admin\AppData\Local\OperaGX_65415963.exe
        • Size 3.9MB
        • SHA256 cddafce29553ddd114a65f0028984e58f3bd3296981b2acdb227f80cf719ec65
        • MD5 SHA1 SHA512 SSDEEP TLSH

        additional_file0.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\additional_file0.tmp
        • Size 2.8MB
        • SHA256 0f50bda78a34e09ccfd5e33a7958de9eebe9863cc3d875e8b9c52dec3f3a9992
        • MD5 SHA1 SHA512 SSDEEP TLSH

        assistant_installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\assistant_installer.exe
        • Size 2.5MB
        • SHA256 e86907d20a18c6b99e270a4422e0c279079e8a118b6bd7fbb4001161ddc881f4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dbgcore.DLL

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\dbgcore.DLL
        • Size 196KB
        • SHA256 a2777992696c953c001dabade3f236f731987b58061efd8c894815f9939f979c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dbghelp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\assistant\dbghelp.dll
        • Size 1.8MB
        • SHA256 102419e70ed462dd1ef4a30d94b714c4317ea838d7acc85ae030dfca19f609ab
        • MD5 SHA1 SHA512 SSDEEP TLSH

        installer_prefs_include.json

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\installer_prefs_include.json
        • Size 342B
        • SHA256 5ce6f2bbf3446f255d985dc10fb8bf348f4ea80afe0673ed82c50116bcd732fd
        • MD5 SHA1 SHA512 TLSH

        installer_prefs_include.json

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\installer_prefs_include.json
        • Size 357B
        • SHA256 b8f9fd7e273d840e03829962206fa9c889efbb6c8f71b22251417551d2e924cb
        • MD5 SHA1 SHA512 TLSH

        installer_prefs_include.json

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\e987eea8-2cbd-418a-a1fe-9447e7a31de6 Opera GX Installer Temp\opera_package_202608020823351\installer_prefs_include.json
        • Size 1KB
        • SHA256 942962b8ca769302633d1f0d10aab178c5152dfb6c9e17f70d2732d8ee73f848
        • MD5 SHA1 SHA512 TLSH

        installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS0F7DD25A\installer.exe
        • Size 9.1MB
        • SHA256 94e544bce1fb4f965564026d1f61eb1bf8e0f750305b1a2c82ea8a445ebb9f1a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        settings.dat

        • Path C:\Users\Admin\AppData\Roaming\Opera Software\Opera GX Stable\Crash Reports\settings.dat
        • Size 40B
        • SHA256 975e8ff8dc79a0c2067b7a8d1333ef15aa5f999116d0bbd9783da233321fbc20
        • MD5 SHA1 SHA512