Analysis

  • max time kernel
    239s
  • max time network
    260s
  • platform
    windows10-1703_x64
  • resource
    win10-20240611-en
  • resource tags

    arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system
  • submitted
    27/06/2024, 23:10

General

  • Target

    a1cc0532e0f999f1f0e60f9134f85dae09b2ca066b5aca0a3cd43bb19e5449d4.exe

  • Size

    2.0MB

  • MD5

    626f64ed7ce1286ea3126383325f476a

  • SHA1

    63f3d027d9f86173ff4cfc33819165421de458a4

  • SHA256

    a1cc0532e0f999f1f0e60f9134f85dae09b2ca066b5aca0a3cd43bb19e5449d4

  • SHA512

    1cb141de9a149da9d5bcde195f7a3c8050831d4af17fda17bb463a1fa9348f99dd0eafd67d61d826f54b17eeae96d21f6270aa526acc291a4585bde4b2fa90f5

  • SSDEEP

    49152:CNEyY80FNFPy4tGmml/0947g+b9W7m6S/sbs0wQ22qPAoFmkw:YEhFvqXjbqoJQCu

Score
8/10

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.

  • 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\a1cc0532e0f999f1f0e60f9134f85dae09b2ca066b5aca0a3cd43bb19e5449d4.exe
    "C:\Users\Admin\AppData\Local\Temp\a1cc0532e0f999f1f0e60f9134f85dae09b2ca066b5aca0a3cd43bb19e5449d4.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3840
    • C:\Users\Admin\AppData\Local\Temp\7zS00FA0AF7\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS00FA0AF7\setup.exe --server-tracking-blob=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
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Enumerates connected drives
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4948
      • C:\Users\Admin\AppData\Local\Temp\7zS00FA0AF7\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS00FA0AF7\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=111.0.5168.25 --initial-client-data=0x304,0x308,0x30c,0x2e0,0x310,0x735da128,0x735da134,0x735da140
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:2824
      • 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
        PID:436
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        PID:4468
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:4300
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\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=111.0.5168.25 --initial-client-data=0x238,0x23c,0x240,0x214,0x11c,0x1379f88,0x1379f94,0x1379fa0
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4920

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\additional_file0.tmp

          Filesize

          2.6MB

          MD5

          dfe86cd1ab9fe5055dba3ead830574f6

          SHA1

          800ba6757bf301a918a800ce15a3853e3941e019

          SHA256

          f9cdff6fea65207cde93c637cca4b92939359ede3ac7337c2048e076085e7e5f

          SHA512

          d3d363a221a3fa7a010194965cb8cc7210aa17d81be094a3e8ee89bb2de684c3b874ce1c6c55e8109091a849874d05c1bae132d450dabe2597167782d0063570

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\assistant_installer.exe

          Filesize

          1.9MB

          MD5

          a8c564c798ae8160230297d361952dd6

          SHA1

          34a45ee9eb7733ae9afbebb9f2951288a27f9df5

          SHA256

          3f48e5331890159921f7b65103c4b06bbf08552065718313761647d1648f8a64

          SHA512

          141ac3356a2fee32121231308cdd8afa5f76695185d66bba9fa977b66e5c6bad8bd4ea4656acdc743cd6b6f85c28a16626ab07f8b2c72652de82b4fb21c0bb54

        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\dbghelp.dll

          Filesize

          1.7MB

          MD5

          eeb07dc97790e8b075d6938759fe6ee1

          SHA1

          afb099be8ee28fef6488b5d253ba910b081a3b1b

          SHA256

          2808772ce1653cdf659f4781c718a9dd6f3ac547d52a1080462487baccaeaf78

          SHA512

          e541d839562c5045b5af0cc7ad2129393383df3fc528193cdef1a31ded4e894ffb8a02d34a009b3d6543d4987616534caaefa130a2b55ea73baf37ee0a294980

        • C:\Users\Admin\AppData\Local\Temp\7zS00FA0AF7\setup.exe

          Filesize

          5.2MB

          MD5

          6a39877aba485cd09c090e4e24f53de6

          SHA1

          ada29b30d665203b7e6cda8f1b6114699ba472a7

          SHA256

          2daba944e443aea09f4d50a0ac5ea2a6bb85b6f861c83c1bbd284e6d81e8a7e3

          SHA512

          ecab25931ed2d985b396e62d5930dd5c7edc3c0835e3e3df3058197bb8800491a8ea13fc824935bcf187a848a29da176c7dd7dc8f43aaca108e17fed76dfb32c

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

          Filesize

          40B

          MD5

          0f44d4d90406009ded4bc17ee520f6cf

          SHA1

          c3651788a88103723118ed9ccecf412ca0db8eb6

          SHA256

          996c3eb1d9c47a210928cfd186c1c97ac997d867018f9f45072b2ba7ad4b5e2d

          SHA512

          eda190a539bc9c03beff1a2a4dab8ec2cadff081ace54471a7868d19b5c418f16abf4cc29f56836019d46be8570d78a9b294493e225090e5ba5fd5a36305c847

        • \Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406272311181\assistant\dbgcore.dll

          Filesize

          166KB

          MD5

          ff0364394f7bc74d0c68040a5fbcda6f

          SHA1

          d19ce25e7d0e3043c377c5770b0f20cb42bd0295

          SHA256

          3bd944ca30b77f9ce8a1f503a7ee0dbcb77b92ae9fcd68907abe0ef2e9275053

          SHA512

          0676de1a65cc9c209f544e921f45c5eb8c5d42fb391ae1f370b0a2bedd26740f75f32ea5f17497d86e03edd6cf281ca51a7a54380a82de152d0e25a28297ccfd

        • \Users\Admin\AppData\Local\Temp\Opera_installer_2406272311163864948.dll

          Filesize

          4.7MB

          MD5

          b05a49fe0b700420401974a62cea7be6

          SHA1

          1dec7981c1d5eab1952c69c512dcc3877241c82e

          SHA256

          12f8a3f3569cecd209e1a6e229e7e6c3d130ab1694fdf71c10d5e3b5154ba703

          SHA512

          34fc1e8a9e046400107ea0e1be1aeb7d1d8a5e71380733bbce0ac5d15ee9b58762b63f7de4591762b6a7c32f5be83122bbf757d3a88a6f78e6d2c06ffd596833