Analysis

  • max time kernel
    133s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 22:44

General

  • Target
    06667d98c30fe3a917fa595da82f4c80681fd036c54c40597e30b81f2263693a.exe
  • Size 2.0MB
  • Sample240818-2nyctayflh
  • SHA256 06667d98c30fe3a917fa595da82f4c80681fd036c54c40597e30b81f2263693a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 7 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.

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\06667d98c30fe3a917fa595da82f4c80681fd036c54c40597e30b81f2263693a.exe
    "C:\Users\Admin\AppData\Local\Temp\06667d98c30fe3a917fa595da82f4c80681fd036c54c40597e30b81f2263693a.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4624
    • C:\Users\Admin\AppData\Local\Temp\7zS0124DFB7\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS0124DFB7\setup.exe
      2⤵
      • Executes dropped EXE
      • 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:408
      • C:\Users\Admin\AppData\Local\Temp\7zS0124DFB7\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS0124DFB7\setup.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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=112.0.5197.53 --initial-client-data=0x32c,0x330,0x334,0x304,0x338,0x74c0a174,0x74c0a180,0x74c0a18c
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3060
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\setup.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4016
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1452
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\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.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=112.0.5197.30 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x5f8f40,0x5f8f4c,0x5f8f58
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:4496

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        additional_file0.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\additional_file0.tmp
        • Size 2.6MB
        • SHA256 58794b1bf4d84bd7566ee89fd8a8a4157dc70c598d229ec5101959f30b6f3491
        • MD5 SHA1 SHA512 SSDEEP

        assistant_installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\assistant_installer.exe
        • Size 1.9MB
        • SHA256 fc5608bf95bb02e889aa9be15abc5c066acd62ba07f886b323383e75909a2566
        • MD5 SHA1 SHA512 SSDEEP

        dbgcore.dll

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\dbgcore.dll
        • Size 166KB
        • SHA256 c5c4c6430bcfe6118a4f499c94afa460401e369dc548a24688532c95fd202ec5
        • MD5 SHA1 SHA512 SSDEEP

        dbghelp.dll

        • Path C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408182244241\assistant\dbghelp.dll
        • Size 1.7MB
        • SHA256 fd8840fab4b61db4e9e09168e5b1b4f0e9bfea0a64482fd475ab63c712b92b9c
        • MD5 SHA1 SHA512 SSDEEP

        setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\7zS0124DFB7\setup.exe
        • Size 5.2MB
        • SHA256 be21539218a31ff278f218a172b9972f4d8978a281387acdadf9a25b86e30b1a
        • MD5 SHA1 SHA512 SSDEEP

        Opera_installer_240818224423129408.dll

        • Path C:\Users\Admin\AppData\Local\Temp\Opera_installer_240818224423129408.dll
        • Size 4.7MB
        • SHA256 94028494f0c28a14f21179ef4096e0c52f1d022a5ad65b070f0d8584b500b597
        • MD5 SHA1 SHA512 SSDEEP

        settings.dat

        • Path C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat
        • Size 40B
        • SHA256 a2473d92bd579da7c4543eded7d259975b2d4be9d92aeae2b6e6573f24503d41
        • MD5 SHA1 SHA512