Analysis

  • max time kernel
    125s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09-08-2024 01:55

General

  • Target

    d8a781ea016e33f481fbc1c4f9fcc933a1a72bd2f379fb9ed30639b94b00c5fc.exe

  • Size

    2.0MB

  • MD5

    d4ff44ead2dde7155c7f9a806c74251b

  • SHA1

    e84771aa2df83734347230a579917e57291e27dd

  • SHA256

    d8a781ea016e33f481fbc1c4f9fcc933a1a72bd2f379fb9ed30639b94b00c5fc

  • SHA512

    bed6297ef908558d8f045a1cc9a5fe5408053d174dddf79d29fb2f59f904e2b80165e2f41484e5ae0b81784ec17640e2498b9e1a2125a3b50bea17a0bd275466

  • SSDEEP

    49152:fVAbwuGwKOco09gsJcxlV8fTguPOAItUIrhO5Ov:dApQx5+Mc27g9tfoMv

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\d8a781ea016e33f481fbc1c4f9fcc933a1a72bd2f379fb9ed30639b94b00c5fc.exe
    "C:\Users\Admin\AppData\Local\Temp\d8a781ea016e33f481fbc1c4f9fcc933a1a72bd2f379fb9ed30639b94b00c5fc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4908
    • C:\Users\Admin\AppData\Local\Temp\7zSC23D0C68\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zSC23D0C68\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:2220
      • C:\Users\Admin\AppData\Local\Temp\7zSC23D0C68\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zSC23D0C68\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=0x324,0x328,0x32c,0x300,0x330,0x7501a174,0x7501a180,0x7501a18c
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1684
      • 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:644
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1248
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2924
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\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,0x208f40,0x208f4c,0x208f58
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:1500
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3036,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4184 /prefetch:8
    1⤵
      PID:4488

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\Assistant_112.0.5197.30_Setup.exe_sfx.exe

      Filesize

      2.6MB

      MD5

      1bf64fd766bd850bcf8e0ffa9093484b

      SHA1

      01524bb2c88b7066391da291ee474004a4904891

      SHA256

      58794b1bf4d84bd7566ee89fd8a8a4157dc70c598d229ec5101959f30b6f3491

      SHA512

      cdf2830edc5d4f30beae41591f3a1bcff820f75444d70338a4c6d36e10df43475f383a9f291b619a008452c53e0dddf65547f217386389000535d6d264854e7f

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\assistant_installer.exe

      Filesize

      1.9MB

      MD5

      9afe96db501220cf42b262fdac954dc8

      SHA1

      d3471998f674b267256e72a30977a79abcd8fca9

      SHA256

      fc5608bf95bb02e889aa9be15abc5c066acd62ba07f886b323383e75909a2566

      SHA512

      ecff52ca7467e3948faa244c1fc7c3d4d1f1dbe74077d071b78147729a078cc6a676212e0606111edcf542d554045c4f5a4d502545b2f0a285cda6c5d0b69b27

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\dbgcore.dll

      Filesize

      166KB

      MD5

      e0274730d20eb9571d59f2da20d165a2

      SHA1

      b746aeca5f7cbee0de163309c9d207c94f9b8d64

      SHA256

      c5c4c6430bcfe6118a4f499c94afa460401e369dc548a24688532c95fd202ec5

      SHA512

      d95998b69e6c3d25037e12e038f2773960de2d18df1af0342fd805c7c349bd630a21d0e0fe7490baaf274e90781ebf6a2667e64593f9d91174d040bfe640bddf

    • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202408090155381\assistant\dbghelp.dll

      Filesize

      1.7MB

      MD5

      6e9976cc7b2def7a37106703e47626a5

      SHA1

      edcb4758f8ee56e9c6515f912d5024aeca9ead50

      SHA256

      fd8840fab4b61db4e9e09168e5b1b4f0e9bfea0a64482fd475ab63c712b92b9c

      SHA512

      27091e6ad001dac22897a295806925e02f693096d79667e587de74ca955ffb9b2773b22c83e306e7164862524e02ad028e68684c2ca7d9e4da1ff03787dd40ca

    • C:\Users\Admin\AppData\Local\Temp\7zSC23D0C68\setup.exe

      Filesize

      5.2MB

      MD5

      44908c157516d82119d84a3b1c4a31f7

      SHA1

      dea19891d14b4e3598844f624c919b0dc5ce236f

      SHA256

      be21539218a31ff278f218a172b9972f4d8978a281387acdadf9a25b86e30b1a

      SHA512

      5a83d45533202ba573941d041619bd7f17e997f352f73528029d1f07da9a26c4f50f1cf77c822f972b596fa75bd2eeb0bca8170d89343d8b590ba869be058106

    • C:\Users\Admin\AppData\Local\Temp\Opera_installer_2408090155359542220.dll

      Filesize

      4.7MB

      MD5

      d7b7e0f7865a3cc624e95cefe2bc205c

      SHA1

      1352733bfaa54292d1457d3f7a87069c00a1f56f

      SHA256

      94028494f0c28a14f21179ef4096e0c52f1d022a5ad65b070f0d8584b500b597

      SHA512

      e5bced68446f702de4236a6f11ec005bc5233915ff689693a1894afe7ea924ca6d6d8ae722b12daa0ee0b4e35223606a55f13b34db648bfb24e96a76e834ff08

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

      Filesize

      40B

      MD5

      5ac3a3660609766319b0e51c59689bae

      SHA1

      309702502cc83d392d54c9f4b02d1cf3408bd741

      SHA256

      469f35a42e922d1322ba1ed0a48f55650164ccf8c77e6652e004ef5119b16225

      SHA512

      913fc82be662e1fe17c7b8468c1b8ca574e9d0305e35a72ce8a43f7242f878e921cd28761b094ee9c1edbaca585d886f033f1b5c94cc881e0f8f5c0281fbd868