Analysis

  • max time kernel
    92s
  • max time network
    113s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/05/2024, 18:50

General

  • Target

    OperaGXSetup.exe

  • Size

    5.7MB

  • MD5

    c8c414dbe66b78e7dcd89c11b1a57d98

  • SHA1

    fd731588b0be7514fb4cc1a3b6d16d8fa07dd9db

  • SHA256

    93d6090140724c9165a04ba0c5a488f892ca1582d8c864f825d8c2dea2de8fa2

  • SHA512

    3a80c0a7017b4b897faa2d3d7836e6acae3accdf19f0278df0ab445d9c2919b60dffdb2636a611234d24cf4537e45623db43df81e62d0003741156fe7777c074

  • SSDEEP

    98304:P0NFE6666666666666666666666666666666x666666666666666fwwwwwwwwwwF:ZnLJHCI6pbCDwNmJ+QLEUvPqqvwNuJY8

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3276
    • C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe
      C:\Users\Admin\AppData\Local\Temp\OperaGXSetup.exe --type=crashpad-handler /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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktopGX --annotation=ver=109.0.5097.79 --initial-client-data=0x2ac,0x2b0,0x2b4,0x2a8,0x2b8,0x755d4208,0x755d4214,0x755d4220
      2⤵
      • Loads dropped DLL
      PID:4416
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\OperaGXSetup.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\OperaGXSetup.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:348
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\Opera_GX_assistant_73.0.3856.382_Setup.exe_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\Opera_GX_assistant_73.0.3856.382_Setup.exe_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:1040
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4844
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\assistant_installer.exe" --type=crashpad-handler /prefetch:7 --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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktopGX --annotation=ver=73.0.3856.382 --initial-client-data=0x26c,0x270,0x274,0x248,0x278,0x204f48,0x204f58,0x204f64
        3⤵
        • Executes dropped EXE
        PID:4464

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    5.7MB

    MD5

    c8c414dbe66b78e7dcd89c11b1a57d98

    SHA1

    fd731588b0be7514fb4cc1a3b6d16d8fa07dd9db

    SHA256

    93d6090140724c9165a04ba0c5a488f892ca1582d8c864f825d8c2dea2de8fa2

    SHA512

    3a80c0a7017b4b897faa2d3d7836e6acae3accdf19f0278df0ab445d9c2919b60dffdb2636a611234d24cf4537e45623db43df81e62d0003741156fe7777c074

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\additional_file0.tmp

    Filesize

    1.4MB

    MD5

    e9a2209b61f4be34f25069a6e54affea

    SHA1

    6368b0a81608c701b06b97aeff194ce88fd0e3c0

    SHA256

    e950f17f4181009eeafa9f5306e8a9dfd26d88ca63b1838f44ff0efc738e7d1f

    SHA512

    59e46277ca79a43ed8b0a25b24eff013e251a75f90587e013b9c12851e5dd7283b6172f7d48583982f6a32069457778ee440025c1c754bf7bb6ce8ae1d2c3fc5

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202405111850521\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2405111850513593276.dll

    Filesize

    5.2MB

    MD5

    c89f182737a13e18b1a8ac433e63a41e

    SHA1

    6e5f97d3d4a87e32dbc73aeb22762010485a914f

    SHA256

    198c0f0154115603a3eec90391bfffc6221f13b896b064a868fb5140c1647069

    SHA512

    57781bae333d7b56ef0dda6cfea15e6ff94404328dee6332e6dbb1a9d8b06acbb78e0630ee192caaaab1c91d8c9b6ecd36b885f074c2f932ffe67b3eba482274

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

    Filesize

    40B

    MD5

    9fe21c03af942d3a7929be235f3bf013

    SHA1

    64f55f20b57efd214eb3280014386ef97ad63af8

    SHA256

    4f0281f2d6625e0654e9fd3e04b3bee8aad990569631ab72b439eb8ab4a3ba1d

    SHA512

    965a1be6fb1686f058afbe451b26a554c8a9f32df7df9788db584a4e389d856842328676ae5befa0fb0ababd31599e23cd8cebfefc421290b886b94b9b065eaf