Analysis

  • max time kernel
    139s
  • max time network
    245s
  • 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 05:57

General

  • Target

    f0f6ba76bf8270c7b5ada5534c410a8442694e664f1e69a2f7892f4f9990568c.exe

  • Size

    2.0MB

  • MD5

    1f49a2ff195ff91db6950ae394225866

  • SHA1

    56f3d491c080ffe34271b6c1d536b56be857fb5b

  • SHA256

    f0f6ba76bf8270c7b5ada5534c410a8442694e664f1e69a2f7892f4f9990568c

  • SHA512

    b0046bdf20adf0d3d14b5dd06a11c79db45c19baea8bb8d74e208e6b2c9e4f697588efaaabf83c472a604021e68cf5b5c1337f4180dc61c705f1d252c70ed7f9

  • SSDEEP

    49152:INEyY80FNFPy4tGmml/0947g+b9W7m6S/sbs0wQ22qPAoFmky:2EhFvqXjbqoJQC4

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\f0f6ba76bf8270c7b5ada5534c410a8442694e664f1e69a2f7892f4f9990568c.exe
    "C:\Users\Admin\AppData\Local\Temp\f0f6ba76bf8270c7b5ada5534c410a8442694e664f1e69a2f7892f4f9990568c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3604
    • C:\Users\Admin\AppData\Local\Temp\7zS41E8DD17\setup.exe
      C:\Users\Admin\AppData\Local\Temp\7zS41E8DD17\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:752
      • C:\Users\Admin\AppData\Local\Temp\7zS41E8DD17\setup.exe
        C:\Users\Admin\AppData\Local\Temp\7zS41E8DD17\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=0x2e0,0x308,0x30c,0x304,0x310,0x72f6a128,0x72f6a134,0x72f6a140
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        PID:1084
      • 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:3436
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\Assistant_111.0.5168.25_Setup.exe_sfx.exe"
        3⤵
        • Executes dropped EXE
        PID:3164
      • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\assistant_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\assistant_installer.exe" --version
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:984
        • C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\assistant_installer.exe
          "C:\Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\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,0x1029f88,0x1029f94,0x1029fa0
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4112

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_202406240557551\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_202406240557551\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_202406240557551\assistant\dbghelp.dll

    Filesize

    1.7MB

    MD5

    eeb07dc97790e8b075d6938759fe6ee1

    SHA1

    afb099be8ee28fef6488b5d253ba910b081a3b1b

    SHA256

    2808772ce1653cdf659f4781c718a9dd6f3ac547d52a1080462487baccaeaf78

    SHA512

    e541d839562c5045b5af0cc7ad2129393383df3fc528193cdef1a31ded4e894ffb8a02d34a009b3d6543d4987616534caaefa130a2b55ea73baf37ee0a294980

  • C:\Users\Admin\AppData\Local\Temp\7zS41E8DD17\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

    ecce3311ed0bc460375e398d296174c1

    SHA1

    4322e084d6e9bae5a3d194406ffebb9ff5cee2e5

    SHA256

    dc4988f43a6c8ce26bbb17882b0a9142a0d70885c2f2f68429709f42138646e2

    SHA512

    3e213ca96cfd9e033908180daab87b7c634abbefd6252c67888d77c5d988cc2a0c197ef213d39d1af0a28042ff471289031d643e558b13d73092f47fe3e42441

  • \Users\Admin\AppData\Local\Temp\.opera\Opera Installer Temp\opera_package_202406240557551\assistant\dbgcore.dll

    Filesize

    166KB

    MD5

    ff0364394f7bc74d0c68040a5fbcda6f

    SHA1

    d19ce25e7d0e3043c377c5770b0f20cb42bd0295

    SHA256

    3bd944ca30b77f9ce8a1f503a7ee0dbcb77b92ae9fcd68907abe0ef2e9275053

    SHA512

    0676de1a65cc9c209f544e921f45c5eb8c5d42fb391ae1f370b0a2bedd26740f75f32ea5f17497d86e03edd6cf281ca51a7a54380a82de152d0e25a28297ccfd

  • \Users\Admin\AppData\Local\Temp\Opera_installer_240624055754777752.dll

    Filesize

    4.7MB

    MD5

    b05a49fe0b700420401974a62cea7be6

    SHA1

    1dec7981c1d5eab1952c69c512dcc3877241c82e

    SHA256

    12f8a3f3569cecd209e1a6e229e7e6c3d130ab1694fdf71c10d5e3b5154ba703

    SHA512

    34fc1e8a9e046400107ea0e1be1aeb7d1d8a5e71380733bbce0ac5d15ee9b58762b63f7de4591762b6a7c32f5be83122bbf757d3a88a6f78e6d2c06ffd596833