Analysis

  • max time kernel
    1800s
  • max time network
    1159s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    25/09/2024, 20:43

General

  • Target

    OperaSetup.exe

  • Size

    2.8MB

  • MD5

    29fbe2b18b4267b12898328d5e8f206c

  • SHA1

    cd9dec0caea792577d686e9f2c77998dd2c43582

  • SHA256

    8166f9aa798bed4df7a62ada8680ef582c95a019459c207ef0c41fb2d24393f0

  • SHA512

    759b4c468469e14a6262d6f9f98ad3ed9a0bda0dcbb3f1f31d1699fa8b57109c415a6d20784fdcdd26ea7c292a4d8451e4618598977bbdcbdce89e894a12b1c1

  • SSDEEP

    49152:wGFBJ146mJFoZYuozeJdMjCgg8V9SI657uMCfmOPABjtz/pLXPtU+6:5JBm3eJcFt4uM6mFBJtLXVU/

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 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.

  • UPX packed file 9 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Modifies registry class 1 IoCs
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3360
    • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
      C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=105.0.4970.16 --initial-client-data=0x310,0x314,0x318,0x2ec,0x31c,0x74d474f0,0x74d47500,0x74d4750c
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:500
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\OperaSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\OperaSetup.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:3516
    • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe" --backend --install --import-browser-data=0 --enable-stats=1 --enable-installer-stats=1 --consent-given=1 --general-interests=1 --general-location=1 --personalized-content=1 --personalized-ads=1 --launchopera=1 --installfolder="C:\Users\Admin\AppData\Local\Programs\Opera" --profile-folder --language=en --singleprofile=0 --copyonly=0 --allusers=0 --setdefaultbrowser=1 --pintotaskbar=1 --pintostartmenu=0 --run-at-startup=1 --show-intro-overlay --server-tracking-data=server_tracking_data --initial-pid=3360 --package-dir-prefix="C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_20240925204331" --session-guid=5a94e6db-1d0e-44db-8150-50139456077e --server-tracking-blob="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 " --desktopshortcut=1 --wait-for-package --initial-proc-handle=C008000000000000
      2⤵
      • Loads dropped DLL
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4492
      • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
        C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=105.0.4970.16 --initial-client-data=0x300,0x304,0x308,0x2dc,0x30c,0x724474f0,0x72447500,0x7244750c
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4064
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\Assistant_113.0.5230.31_Setup.exe_sfx.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1428
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3344
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector-2.opera.com/ --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=113.0.5230.31 --initial-client-data=0x234,0x238,0x23c,0x210,0x240,0x10d2c48,0x10d2c54,0x10d2c60
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4068
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:748

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

          Filesize

          10KB

          MD5

          06f54da138064bcb87a50ea5796be0bc

          SHA1

          149614dcc0cc8a15d12e042639d53d364b692f5a

          SHA256

          fd00cc98658581a6d166ce94e14f68079c4a2948db69e5ac60755ac8c50c1f50

          SHA512

          530073a003f19a93945cc2d663cd395744c98b3d8377ed6fbc237be0b42b7ec23544fe149435e3d5d47b8d385c2a9bd1e2605222bbe2df0d3233edf10550202d

        • C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

          Filesize

          10KB

          MD5

          2464a58269a134f2979060e336390b5c

          SHA1

          31d3185eb35ec0ccc4ad52f5cf0e278183315dbd

          SHA256

          554d683b35a8120871871ef5733e307f50400a424889bc1caf8b4375fd3bfc00

          SHA512

          9d93b63d2e7d55fe88bf6023db7f2c4581ebd9b03e2a17abe39b381eee19ca71e5f2bf85f19b022afe06936d2089ef1c5eeee0607ac3f8d1e1657560afb8666d

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\OperaSetup.exe

          Filesize

          2.8MB

          MD5

          29fbe2b18b4267b12898328d5e8f206c

          SHA1

          cd9dec0caea792577d686e9f2c77998dd2c43582

          SHA256

          8166f9aa798bed4df7a62ada8680ef582c95a019459c207ef0c41fb2d24393f0

          SHA512

          759b4c468469e14a6262d6f9f98ad3ed9a0bda0dcbb3f1f31d1699fa8b57109c415a6d20784fdcdd26ea7c292a4d8451e4618598977bbdcbdce89e894a12b1c1

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\additional_file0.tmp

          Filesize

          2.6MB

          MD5

          0995a010e2f8b866c6abca90fa49130f

          SHA1

          f282871f9d6333f5bcc738062613c44567a58dc0

          SHA256

          74d4c26b0ee35a7431944e51aaf5ec4ab3338b6776bf44bdfdbc1e201b4fea76

          SHA512

          b98e4bd252a9bdb11a7f15c795910daabdbe8e0ba0fa86a5ee6f8167ff66a9b67790c51f700666239781ad46241926590588b6831d16e5057dcbfebe37c3ae6b

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\assistant_installer.exe

          Filesize

          1.9MB

          MD5

          1d980ac7aa07def69627a334168853f9

          SHA1

          c4b6a91eb61eb1a946b922ceef9aea86dde79eb5

          SHA256

          a08d4c13a57600c280d10aa2d0c5c13352638b6ac38651aa908af1c0ec351807

          SHA512

          e8f7afb5299d627d67f6656f71006f60c1dbaa535175ff935d2934197e2ed5faca0f9d64897695965deeeea7612a4229bf117a8243a3b5de902a001d4e91797b

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\dbgcore.dll

          Filesize

          166KB

          MD5

          98d373f7e891c8282b7a163880ffff55

          SHA1

          a84b5607aebd38833a96ee46b33f2d1b748e6ea0

          SHA256

          67bce323f46300c83866e02b1a3923b93834e30741999b965b351531073e8f2b

          SHA512

          b417629c5276ed942578273af5d2de4ab35fdb1cec102b47999b0b54d50c98d0ec36e8fca01db8c6f9fc4dc6aa130fef916fe07d131586c84f4a75bb589bb927

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202409252043311\assistant\dbghelp.dll

          Filesize

          1.7MB

          MD5

          49c70bed12c523235e2e154326b1a8f0

          SHA1

          4a011c6909ea9c08357dd4bebdd62f8b3bfab8dd

          SHA256

          27251f799e2d950c561fda99c07ff49553c1d538ccd544bcd1ee12820eed5cd5

          SHA512

          1553f9ddbb95603d82c01668320a128766ba8b039ee127f86a2008de222e9390b4d8b7153443444790c946b40742b85625fbc422e81073a353e9e434cc56eba3

        • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2409252043313233360.dll

          Filesize

          4.6MB

          MD5

          161c755621aa80426d48315d27bc8daa

          SHA1

          c17fed1e315395b38474842d3353663066b250c5

          SHA256

          6a17694a9428cb7ebcf1b7803e236ab76a557d4c041a5f7f229d6bab87b2c89b

          SHA512

          5dba00756f973ecddd0994c4af9779f26aec7f8f2b4f890532fba3cbb0a1e37fbc791bf8fbca047c4f3dbaa984ae78e2d4623686b83e6387741db959d36c22bf

        • C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat

          Filesize

          40B

          MD5

          28d9550f6ecb846a46e24873223dda09

          SHA1

          4989b3d1a89ad0aa8d138c20e933277a28eac377

          SHA256

          30f081c20afaa50f6c320d3b12996aad025be5e8916399a267aaffb7946a94f5

          SHA512

          137f1caa41d2d36a5dde387b4b420c4bc507c4a8fe9d6e99693b3e3de7e14db436d41ff683d5647a046d4b85bf8b78d8654b2cca9e277c1f8f6bedae82593eee

        • memory/500-45-0x0000000000C00000-0x0000000001129000-memory.dmp

          Filesize

          5.2MB

        • memory/3360-39-0x0000000000C00000-0x0000000001129000-memory.dmp

          Filesize

          5.2MB

        • memory/3360-0-0x0000000000C00000-0x0000000001129000-memory.dmp

          Filesize

          5.2MB

        • memory/3516-49-0x00000000004D0000-0x00000000009F9000-memory.dmp

          Filesize

          5.2MB

        • memory/3516-17-0x00000000004D0000-0x00000000009F9000-memory.dmp

          Filesize

          5.2MB

        • memory/3516-18-0x00000000004D0000-0x00000000009F9000-memory.dmp

          Filesize

          5.2MB

        • memory/4064-40-0x0000000000C00000-0x0000000001129000-memory.dmp

          Filesize

          5.2MB

        • memory/4492-35-0x0000000000C00000-0x0000000001129000-memory.dmp

          Filesize

          5.2MB