Analysis

  • max time kernel
    94s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-08-2024 07:00

General

  • Target

    b7c9fc3e558123105fe280df47f1bcf1272c7e8206be4c42f556417c4c465635.exe

  • Size

    3.1MB

  • MD5

    2e0e912cf2f8de03a623e1414bd78a1c

  • SHA1

    fc5a29c10d77847907aa0a8547ef879bfcdaac37

  • SHA256

    b7c9fc3e558123105fe280df47f1bcf1272c7e8206be4c42f556417c4c465635

  • SHA512

    20bc79196ae2dd3328ece59bf1a955c3cce2dbb324aad657f13b71cf8bea754116d14783b27d1d1dbb7fc9a92c59e9d6c8db20024a3d67400170ddb59457a6dc

  • SSDEEP

    49152:ONEyYYC1hqiJckG38dBFOhg5/6qF3rjb/h4CNcTCP8xphzSNtOSe+aS:kEP1y3+0hgh6u/ZcTCP8BzONaS

Malware Config

Signatures

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

  • 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 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b7c9fc3e558123105fe280df47f1bcf1272c7e8206be4c42f556417c4c465635.exe
    "C:\Users\Admin\AppData\Local\Temp\b7c9fc3e558123105fe280df47f1bcf1272c7e8206be4c42f556417c4c465635.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3160
    • C:\Users\Admin\AppData\Local\Temp\7zS85C8F4C7\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS85C8F4C7\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:1180
      • C:\Users\Admin\AppData\Local\Temp\7zS85C8F4C7\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS85C8F4C7\setup.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=111.0.5168.99 --initial-client-data=0x324,0x328,0x32c,0x300,0x330,0x74e01160,0x74e0116c,0x74e01178
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1012
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\setup.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\setup.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2300
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\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_202408080700331\assistant\Opera_GX_assistant_73.0.3856.382_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2056
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1500
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\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,0x270,0x274,0x248,0x278,0x514f48,0x514f58,0x514f64
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:3196

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera GX Installer Temp\opera_package_202408080700331\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_202408080700331\assistant\assistant_installer.exe

    Filesize

    1.8MB

    MD5

    4c8fbed0044da34ad25f781c3d117a66

    SHA1

    8dd93340e3d09de993c3bc12db82680a8e69d653

    SHA256

    afe569ce9e4f71c23ba5f6e8fd32be62ac9538e397cde8f2ecbe46faa721242a

    SHA512

    a04e6fd052d2d63a0737c83702c66a9af834f9df8423666508c42b3e1d8384300239c9ddacdc31c1e85140eb1193bcfac209f218750b40342492ffce6e9da481

  • C:\Users\Admin\AppData\Local\Temp\7zS85C8F4C7\setup.exe

    Filesize

    6.4MB

    MD5

    241331bede4cd250aeead156de3225c0

    SHA1

    4e6ebbfda62706203c7f3016d136560854841358

    SHA256

    b476f1c8521db36255a862af284f462eef77c4fd5233adb002137af7835f5e86

    SHA512

    9eb8f3970645315c73e80cea2af9364d8aa68d4e3383cdf21dd0393fc74857538639793e995a66b6bd58f086738981ffc364a06b23b129fab380d0e59532d712

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2408080700318801180.dll

    Filesize

    5.9MB

    MD5

    4510a03cd9a85d34ad47ed84097ed4a4

    SHA1

    a1a761249bbbe8dffcb3fac37ed570c89e130379

    SHA256

    cafaa2ac106c340ca91acbbd483379cd3c2273d2cb795349db6b07c7272c0433

    SHA512

    95b4b9de8818e025608f7a77b3281e879bbaed5bbde6cfcbbd4bcb1b6c6cf09706b68061b7264d90c3374c2a0072f91afffc5b617fec12921407c72b63b2be62

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

    Filesize

    40B

    MD5

    f607c7e54273b145736e8bb95a7f017f

    SHA1

    9ced846a3a523a6c26fdd1ea565580f855c4d4bb

    SHA256

    85947ff988b99c69e4b8384b7246c28fe9975fe6d1d23c4f2abcea1ce12350a8

    SHA512

    b95283b351553eabbc2532620c753223ccc1e532a62b951db28f4816dcdc977597fc06dbed8fc4ae06894d9fc8d987a09d86996d20352aa3e3b48ec486a2833c