Resubmissions

22-05-2024 05:25

240522-f39hqsdc55 8

22-05-2024 05:18

240522-fzda5adc8v 8

Analysis

  • max time kernel
    1386s
  • max time network
    1172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 05:25

General

  • Target

    OperaSetup.exe

  • Size

    5.2MB

  • MD5

    09576f9fb6596bca04d7c8c7b1cad18d

  • SHA1

    aaead49acbb6bdd85fc785d9b587df064d6c5360

  • SHA256

    46aaee3d118e64680e5c7d397fa73ddf5d040442b590bf6763a64b1ceeb0f111

  • SHA512

    4bdad289ad237759ab0e093bab085736eddc132070bdb2517233150f41cdb31eae254d0b4411113e3c900fd5a0d2efd6219f1ed4ef5468889da7a7445ff5b887

  • SSDEEP

    98304:D7xBo56666666666666666666666666666666x666666666666666fwwwwwwwwwA:BcPdCvTxfJfXzp3OVGpWNuNb8eLgUXJ8

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 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 4 IoCs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 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
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1284
    • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
      C:\Users\Admin\AppData\Local\Temp\OperaSetup.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=110.0.5130.23 --initial-client-data=0x27c,0x2a4,0x2a8,0x2a0,0x2b0,0x7552b288,0x7552b294,0x7552b2a0
      2⤵
      • Loads dropped DLL
      PID:5052
    • 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
      PID:2096
    • 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=1 --run-at-startup=1 --show-intro-overlay --server-tracking-data=server_tracking_data --initial-pid=1284 --package-dir-prefix="C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_20240522052520" --session-guid=f44e6b95-422e-4351-82cb-86ccc35a1c06 --server-tracking-blob="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 " --desktopshortcut=1 --wait-for-package --initial-proc-handle=1009000000000000
      2⤵
      • Loads dropped DLL
      • Enumerates connected drives
      • Suspicious use of WriteProcessMemory
      PID:4724
      • C:\Users\Admin\AppData\Local\Temp\OperaSetup.exe
        C:\Users\Admin\AppData\Local\Temp\OperaSetup.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=110.0.5130.23 --initial-client-data=0x2a0,0x2ac,0x2b0,0x278,0x2b4,0x72a4b288,0x72a4b294,0x72a4b2a0
        3⤵
        • Loads dropped DLL
        PID:3208
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\Assistant_110.0.5130.23_Setup.exe_sfx.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\Assistant_110.0.5130.23_Setup.exe_sfx.exe"
      2⤵
      • Executes dropped EXE
      PID:4780
    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\assistant_installer.exe
      "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\assistant_installer.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:4264
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\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=110.0.5130.23 --initial-client-data=0x220,0x224,0x228,0x1fc,0x22c,0x2730e8,0x2730f4,0x273100
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    5.2MB

    MD5

    09576f9fb6596bca04d7c8c7b1cad18d

    SHA1

    aaead49acbb6bdd85fc785d9b587df064d6c5360

    SHA256

    46aaee3d118e64680e5c7d397fa73ddf5d040442b590bf6763a64b1ceeb0f111

    SHA512

    4bdad289ad237759ab0e093bab085736eddc132070bdb2517233150f41cdb31eae254d0b4411113e3c900fd5a0d2efd6219f1ed4ef5468889da7a7445ff5b887

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\additional_file0.tmp

    Filesize

    2.5MB

    MD5

    028fb19ee2cea3e611b4a85ac48fafbc

    SHA1

    d1a802b5df649282e896289b4ec5df8d512b53dd

    SHA256

    e8fa79e22926ae07a998b5d2bb1be9309d0a15772ac72b88f4eed66052f33117

    SHA512

    99959d7765c1e6636dee1841f214cb2d0c7684d7128381b0387fa9c7ef4a92ef62bb094087bdcb343e44196b5a333df3a2104ced9f49671197a06fafa27aff51

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\assistant_installer.exe

    Filesize

    1.9MB

    MD5

    b6789061eb88781add48ec7095ff78e5

    SHA1

    c2cdf5723a94b3b5a69ad78a5e869347444abe0b

    SHA256

    c39c7199fa2221783ea61f085f484668e3c452706069b046cb0f4a9d4cb4c0a3

    SHA512

    7c9a61c7f8d45fb7a2591c0c57c22bca0b527e3b6b4a3bdde5fbdcca25abc1e0c56a244a39d4b65a91316eb8f19fb8232569f5781eedefbc0898646d4df10f9c

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    a4ed3b36776e0155fd24ffa609ffc2f4

    SHA1

    3d6496f21e0f04b6789365d06e71fe7de284b1c0

    SHA256

    b69387b9284dc36d377e4066c4cf361dc65efc6c784af0f8666d9684fabd2d29

    SHA512

    ae5d052fdcc7e7d3e593a1fb2dd5e64fcd75c7381ff4e4c5f4302d8d3c058a48c943c66d04c02d44d45c2bda36b3d3df096dfea26fc35d3c682bdd5221225e76

  • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202405220525201\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    fa64324149160877768551fd96c360dc

    SHA1

    dd76ebe617271465ae5820f49152f8a89703ae1a

    SHA256

    7f4a2cff90524b769781b763077be198d74834c6b576ef9f27132a415cbbaca8

    SHA512

    72161c1b0449f546e2a3560369f5cebbe71c5f098efb4037a9ec229310082b0fab2de10b8a0f94b0213d5119cd9ff66daeaa73ca2163ba0224b5cd8526f7bbea

  • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2405220525193311284.dll

    Filesize

    4.7MB

    MD5

    74ceaf1146735fe0e297fa37ecd98349

    SHA1

    d77927d0b1bc98c4a1d1839591b1d3d5da2e3f50

    SHA256

    b4bf308a845e7b2b6cf1743a7c67440c8690a73631977d75197ae4616996c694

    SHA512

    f7717dbf780b5badacb27d83fc0e55b14477fe2179f11396780b053ba928b1875d77c83c470d5940ade9ce53082989cc581d411e9b441b52fe0b1f9396115251

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

    Filesize

    40B

    MD5

    a8459f3c0b631ecdfad7a5903715c2af

    SHA1

    56b0d7cef31bf6a34a5d305939c830a76607daca

    SHA256

    402317cd57bb40c70091a51b9b0f411fd9d8bc3f362d5caa5aa67fd57cd4ac4b

    SHA512

    a4a47bf5a7abcedf717ae7fe7674aa88837a5561733c081247aae2bbeec65a9dbcfcf37eee896e20cf50674a08b29c2235f947be352903f9e1353efecf96c811