Analysis

  • max time kernel
    149s
  • max time network
    127s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/10/2026, 04:34

General

  • Target
    OperaGXSetup(1).exe
  • Size 4.0MB
  • Sample261023-e7d2ysby9n
  • SHA256 712beddf69888728f9d2d80e1afd36cff8c66b6ce7fdd5ecfa3b3b90a93c230c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 6 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.

  • Writes a Windows system DLL name to a user directory 2 TTPs 1 IoCs

    A module named after a system DLL outside System32 can be loaded instead of the real one by a program searching that directory.

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • 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 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OperaGXSetup(1).exe
    "C:\Users\Admin\AppData\Local\Temp\OperaGXSetup(1).exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3324
    • C:\Users\Admin\AppData\Local\Temp\7zSCFC6F9E8\installer.exe
      C:\Users\Admin\AppData\Local\Temp\7zSCFC6F9E8\installer.exe --server-tracking-blob=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
      2⤵
      • Downloads MZ/PE file
      • Executes dropped EXE
      • Enumerates connected drives
      • Reads the TCP/IP host and domain name from the registry
      • Enumerates system info in registry
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1332
      • C:\Users\Admin\AppData\Local\Temp\7zSCFC6F9E8\installer.exe
        C:\Users\Admin\AppData\Local\Temp\7zSCFC6F9E8\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=137.0.6036.65 --initial-client-data=0x2a0,0x2a4,0x2a8,0x27c,0x2ac,0x7ff74f3469d8,0x7ff74f3469e8,0x7ff74f3469f8
        3⤵
        • Executes dropped EXE
        PID:3200
      • C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\installer.exe" --version
        3⤵
        • Executes dropped EXE
        PID:1240
      • C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\Opera_GX_assistant_137.0.6036.65_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\Opera_GX_assistant_137.0.6036.65_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • Writes a Windows system DLL name to a user directory
        • System Location Discovery: System Language Discovery
        PID:1176
      • C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Enumerates system info in registry
        • Suspicious use of WriteProcessMemory
        PID:964
        • C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\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=137.0.6036.65 --initial-client-data=0x24c,0x250,0x254,0x228,0x258,0x116b950,0x116b95c,0x116b968
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:1876

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        additional_file1.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\additional_file1.tmp
        • Size 3.2MB
        • SHA256 cd8129a92e34618206b386216a307a768ba8770cb76b4c16a08b35ac23c1228d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        assistant_installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\assistant_installer.exe
        • Size 2.5MB
        • SHA256 d1bebcbda51c7869eebf33275e4b6c3d2b3d37df6fae74a0561cdf2dffb5b293
        • MD5 SHA1 SHA512 SSDEEP TLSH

        browser_assistant.exe

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\browser_assistant.exe
        • Size 5.3MB
        • SHA256 ca7d5883a0d16362f9adcc9787d84c3b6d0535b5c8625f44cf80b1a665f6cb63
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dbgcore.DLL

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\dbgcore.DLL
        • Size 238KB
        • SHA256 65a487c32b2b0fdb5a022a7ed54dcf6b6f8271985d50c45c432fc8acb1bdf115
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dbghelp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\dbghelp.dll
        • Size 589KB
        • SHA256 2ec4dcc1209a7f59c9215c5d8f17d7b35a91b2faf84d63ca5666cb6b02e46050
        • MD5 SHA1 SHA512 SSDEEP TLSH

        files_list

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\files_list
        • Size 86B
        • SHA256 403b9075eb28634cb9000e1029fbfb968274642e3a2356d9fbc18c2ab3c60eaa
        • MD5 SHA1 SHA512 TLSH

        msdia140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\assistant\msdia140.dll
        • Size 2.5MB
        • SHA256 261c8cea0752fdbc241c9a02be493cb0dd53b033a686a2c5eb6cc24d7bd74b5a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        custom_partner_content.json

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\7ce91a27-ae0e-403e-bd5c-94568c6ba2c1 Opera GX Installer Temp\opera_package_202610230534561\resources\custom_partner_content.json
        • Size 245KB
        • SHA256 84bc1efb211c6b45f2906278a36f1414922f994a9611bbee7713ffd4ae21e967
        • MD5 SHA1 SHA512 SSDEEP TLSH

        installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zSCFC6F9E8\installer.exe
        • Size 9.2MB
        • SHA256 407955bd8dc43601214a22c6696f6db8da9352eb0c13b38fbeb780a90755fc52
        • 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 b671ac19dce744425b353cf6aa3ed2032e29860040b959dd3d6210d56853afe9
        • MD5 SHA1 SHA512