Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    16/09/2024, 17:46

General

  • Target
    2024091618b5196c49a9611141dd28e90986e4b5floxifmagniber.exe
  • Size 10.2MB
  • Sample240916-wcseja1dnf
  • SHA256 4994d99b024a69536c6df49657916c91ff00d64d371a27c52be4bf85f45fb037
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Detects Floxif payload 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 11 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 47 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 17 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 61 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024091618b5196c49a9611141dd28e90986e4b5floxifmagniber.exe
    "C:\Users\Admin\AppData\Local\Temp\2024091618b5196c49a9611141dd28e90986e4b5floxifmagniber.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1980
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2400
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding BE5FD16574D12B609296BB07739E492E
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3252
      • C:\Users\Admin\AppData\Local\Temp\5A8A29E9-78F4-4A1C-B7C2-6BC821FE2A40\lite_installer.exe
        "C:\Users\Admin\AppData\Local\Temp\5A8A29E9-78F4-4A1C-B7C2-6BC821FE2A40\lite_installer.exe" --use-user-default-locale --silent --cumtom-welcome-page=https://browser.yandex.ru/promo/welcome_com/5/
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        PID:5116
      • C:\Users\Admin\AppData\Local\Temp\EDA6B66D-D266-4438-889A-EE6D9FA6BB53\seederexe.exe
        "C:\Users\Admin\AppData\Local\Temp\EDA6B66D-D266-4438-889A-EE6D9FA6BB53\seederexe.exe" "--yqs=" "--yhp=" "--ilight=" "--oem=" "--nopin=n" "--pin_custom=n" "--pin_desktop=n" "--pin_taskbar=y" "--locale=us" "--browser=" "--browser_default=" "--loglevel=trace" "--ess=" "--clids=C:\Users\Admin\AppData\Local\Temp\clids-yasearch.xml" "--sender=C:\Users\Admin\AppData\Local\Temp\A7A20E76-6C06-4ECA-A344-EAA148A7E26E\sender.exe" "--is_elevated=yes" "--ui_level=5" "--good_token=x" "--no_opera=n"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies Internet Explorer settings
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1664
        • C:\Users\Admin\AppData\Local\Temp\A7A20E76-6C06-4ECA-A344-EAA148A7E26E\sender.exe
          C:\Users\Admin\AppData\Local\Temp\A7A20E76-6C06-4ECA-A344-EAA148A7E26E\sender.exe --send "/status.xml?clid=9183476&uuid=1bcb2a9f-7d23-4585-846d-ccf59f867551&vnt=Windows 10x64&file-no=8%0A15%0A25%0A45%0A57%0A59%0A102%0A111%0A125%0A129%0A"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:6692

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        e57a1a0.rbs

        • Path C:\Config.Msi\e57a1a0.rbs
        • Size 575B
        • SHA256 8be55f52c75145d77d7c75e8f007056cd4a5f831acfdb789493ce8fb86f20263
        • MD5 SHA1 SHA512

        symsrv.dll

        • Path C:\Program Files\Common Files\System\symsrv.dll
        • Size 67KB
        • SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
        • MD5 SHA1 SHA512 SSDEEP

        357F04AD41BCF5FE18FCB69F60C6680F_394487CAFBCFB8C5917AD7A10924C8A7

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\357F04AD41BCF5FE18FCB69F60C6680F_394487CAFBCFB8C5917AD7A10924C8A7
        • Size 1KB
        • SHA256 baf69982271ba57e8b845dd473e465e0ce54836af8c46078c3cdba4c908066c7
        • MD5 SHA1 SHA512

        9CB4373A4252DE8D2212929836304EC5_1AB74AA2E3A56E1B8AD8D3FEC287554E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\9CB4373A4252DE8D2212929836304EC5_1AB74AA2E3A56E1B8AD8D3FEC287554E
        • Size 1KB
        • SHA256 daf5a7b210974af392bc4b1f5b525f4780b1861dd80418a15743e09d1c1e4e9c
        • MD5 SHA1 SHA512

        357F04AD41BCF5FE18FCB69F60C6680F_394487CAFBCFB8C5917AD7A10924C8A7

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\357F04AD41BCF5FE18FCB69F60C6680F_394487CAFBCFB8C5917AD7A10924C8A7
        • Size 536B
        • SHA256 9255a65b809b158171b6c4c0ae11e28220e84bc63e5982d06e12134e886177be
        • MD5 SHA1 SHA512

        9CB4373A4252DE8D2212929836304EC5_1AB74AA2E3A56E1B8AD8D3FEC287554E

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\9CB4373A4252DE8D2212929836304EC5_1AB74AA2E3A56E1B8AD8D3FEC287554E
        • Size 536B
        • SHA256 233f2b250918c7d7015c373b5ca163c0efeb8bc46aa285742a5fe21a53e78bcd
        • MD5 SHA1 SHA512

        lite_installer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\5A8A29E9-78F4-4A1C-B7C2-6BC821FE2A40\lite_installer.exe
        • Size 419KB
        • SHA256 688d0b782437ccfae2944281ade651a2da063f222e80b3510789dbdce8b00fdc
        • MD5 SHA1 SHA512 SSDEEP

        sender.exe

        • Path C:\Users\Admin\AppData\Local\Temp\A7A20E76-6C06-4ECA-A344-EAA148A7E26E\sender.exe
        • Size 260KB
        • SHA256 36022c6ecb3426791e6edee9074a3861fe5b660d98f2b2b7c13b80fe11a75577
        • MD5 SHA1 SHA512 SSDEEP

        seederexe.exe

        • Path C:\Users\Admin\AppData\Local\Temp\EDA6B66D-D266-4438-889A-EE6D9FA6BB53\seederexe.exe
        • Size 8.6MB
        • SHA256 35585d12899435e13e186490fcf1d270adbe3c74a1e0578b3d9314858bf2d797
        • MD5 SHA1 SHA512 SSDEEP

        YandexSearch00000.log

        • Path C:\Users\Admin\AppData\Local\Temp\YandexSearch00000.log
        • Size 34KB
        • SHA256 a732200faff9d4f3e1537d08aa1c5116abf88f540d3f612cc418c9c9beddc850
        • MD5 SHA1 SHA512 SSDEEP

        clids-yasearch.xml

        • Path C:\Users\Admin\AppData\Local\Temp\clids-yasearch.xml
        • Size 531B
        • SHA256 637a4d28261e4819483ca7296cf6b6eb5768e2e82b218a3edca4c007b9941788
        • MD5 SHA1 SHA512

        omnija-20244716.zip

        • Path C:\Users\Admin\AppData\Local\Temp\omnija-20244716.zip
        • Size 42.1MB
        • SHA256 eeb36cbca086fc67b9eb6946db764d8d2940a0dc22b2cea28c0d77e4d1e3ed78
        • MD5 SHA1 SHA512 SSDEEP

        tmp1664aaaaaa

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1664aaaaaa
        • Size 2.5MB
        • SHA256 74d5e8d3cd8d659d8df8e6f306832dfc252e1a6e676bb60334e31b5943deb4fb
        • MD5 SHA1 SHA512 SSDEEP

        vendor00000.xml

        • Path C:\Users\Admin\AppData\Local\Temp\vendor00000.xml
        • Size 510B
        • SHA256 546e928b7127a4515b089f0b913078404b664a5df33c928a281888c25b03760f
        • MD5 SHA1 SHA512

        YandexSearch.msi

        • Path C:\Users\Admin\AppData\Local\Temp\{5B964E0E-B9A3-4276-9ED9-4D5A5720747A}\YandexSearch.msi
        • Size 9.8MB
        • SHA256 b5a4c7a05785ac51553953bf951c284ff03a9ac7d1cba15fa391d0b6c7aed5cc
        • MD5 SHA1 SHA512 SSDEEP

        places.sqlite-20240916174709.218969.backup

        • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\8ldjzjqt.Admin\places.sqlite-20240916174709.218969.backup
        • Size 68KB
        • SHA256 b6d278384a3684409a2a86f03e4f52869818ce7dd8b5779876960353f7d35dc1
        • MD5 SHA1 SHA512 SSDEEP

        Bookmarks-20240916174709.359592.backup

        • Path C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Bookmarks-20240916174709.359592.backup
        • Size 1KB
        • SHA256 2b167248e8136c4d45c2c46e2bff6fb5e5137dd4dfdccde998599be2df2e9335
        • MD5 SHA1 SHA512

        Preferences-20240916174709.359592.backup

        • Path C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Preferences-20240916174709.359592.backup
        • Size 313B
        • SHA256 ed6a32e11cc99728771989b01f5ae813de80c46a59d3dc68c23a4671a343cb8c
        • MD5 SHA1 SHA512

        ui

        • Path C:\Users\Admin\AppData\Roaming\Yandex\ui
        • Size 38B
        • SHA256 38fdbf9e8d4f1e2699def0364c0aa2e99628a23e8e149cc729e3a780507ddbca
        • MD5 SHA1 SHA512

        MSIA2E7.tmp

        • Path C:\Windows\Installer\MSIA2E7.tmp
        • Size 181KB
        • SHA256 a5dd2f97c6787c335b7807ff9b6966877e9dd811f9e26326837a7d2bd224de86
        • MD5 SHA1 SHA512 SSDEEP

        MSIA346.tmp

        • Path C:\Windows\Installer\MSIA346.tmp
        • Size 189KB
        • SHA256 669cc0aae068ced3154acaecb0c692c4c5e61bc2ca95b40395a3399e75fcb9b2
        • MD5 SHA1 SHA512 SSDEEP

        memory/1980-5-0x000000000041F000-0x0000000000423000-memory.dmp

        memory/1980-3-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/1980-226-0x0000000010000000-0x0000000010030000-memory.dmp