Analysis

  • max time kernel
    76s
  • max time network
    224s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    24/06/2024, 05:43

General

  • Target

    b465e6a2e1aa28d1aba8f45b2a048f2d2dce3f99bbf0ee9c0a3fd7e3188a7b02.exe

  • Size

    2.0MB

  • MD5

    56eb8d3bbc5d084ba15da4a73ff3cf40

  • SHA1

    ceaba45979ac15a0c1942606aa0af4367fac41a9

  • SHA256

    b465e6a2e1aa28d1aba8f45b2a048f2d2dce3f99bbf0ee9c0a3fd7e3188a7b02

  • SHA512

    f444d94e2695b60e77e62f5cc3312868c2a8531a3c38c3ca451ad8ba3023ab80d860a833b945bc4238d9c0bdc70a8ac61e1352195233bdc7af86602e377d0953

  • SSDEEP

    49152:vNEyY80FNFPy4tGmml/0947g+b9W7m6S/sbs0wQ22qPAoFmkW:FEhFvqXjbqoJQCs

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\b465e6a2e1aa28d1aba8f45b2a048f2d2dce3f99bbf0ee9c0a3fd7e3188a7b02.exe
    "C:\Users\Admin\AppData\Local\Temp\b465e6a2e1aa28d1aba8f45b2a048f2d2dce3f99bbf0ee9c0a3fd7e3188a7b02.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:600
    • C:\Users\Admin\AppData\Local\Temp\7zS85265237\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS85265237\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:2388
      • C:\Users\Admin\AppData\Local\Temp\7zS85265237\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS85265237\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,0x2e0,0x310,0x7388a128,0x7388a134,0x7388a140
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:4268
      • 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:2400
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        PID:1844
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1472
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\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=0x230,0x234,0x238,0x20c,0x23c,0xb49f88,0xb49f94,0xb49fa0
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2556

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_202406240543121\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_202406240543121\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_202406240543121\assistant\dbghelp.dll

          Filesize

          1.7MB

          MD5

          eeb07dc97790e8b075d6938759fe6ee1

          SHA1

          afb099be8ee28fef6488b5d253ba910b081a3b1b

          SHA256

          2808772ce1653cdf659f4781c718a9dd6f3ac547d52a1080462487baccaeaf78

          SHA512

          e541d839562c5045b5af0cc7ad2129393383df3fc528193cdef1a31ded4e894ffb8a02d34a009b3d6543d4987616534caaefa130a2b55ea73baf37ee0a294980

        • C:\Users\Admin\AppData\Local\Temp\7zS85265237\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

          67b8050c7b711d559585f75239ddecc6

          SHA1

          45f763b8be44d92853d18edbfe90ff25bb57a0d6

          SHA256

          a732648a3a6690632e6dbf8df8a765514fd11bb6ea2a17473f946543830ae777

          SHA512

          bb02f5531001d67889dce56e5d491a7fc076e0e34791c82dde39bb08d924893e36edb23b755be8f1245df13506eef3cfde41fdf15b72cd8c6880e9977f33af51

        • \Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240543121\assistant\dbgcore.dll

          Filesize

          166KB

          MD5

          ff0364394f7bc74d0c68040a5fbcda6f

          SHA1

          d19ce25e7d0e3043c377c5770b0f20cb42bd0295

          SHA256

          3bd944ca30b77f9ce8a1f503a7ee0dbcb77b92ae9fcd68907abe0ef2e9275053

          SHA512

          0676de1a65cc9c209f544e921f45c5eb8c5d42fb391ae1f370b0a2bedd26740f75f32ea5f17497d86e03edd6cf281ca51a7a54380a82de152d0e25a28297ccfd

        • \Users\Admin\AppData\Local\Temp\Opera_installer_2406240543108052388.dll

          Filesize

          4.7MB

          MD5

          b05a49fe0b700420401974a62cea7be6

          SHA1

          1dec7981c1d5eab1952c69c512dcc3877241c82e

          SHA256

          12f8a3f3569cecd209e1a6e229e7e6c3d130ab1694fdf71c10d5e3b5154ba703

          SHA512

          34fc1e8a9e046400107ea0e1be1aeb7d1d8a5e71380733bbce0ac5d15ee9b58762b63f7de4591762b6a7c32f5be83122bbf757d3a88a6f78e6d2c06ffd596833