Analysis

  • max time kernel
    1048s
  • max time network
    455s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240426-en
  • resource tags

    arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    04/06/2024, 11:38

General

  • Target
    Browser.exe
  • Size 106.5MB
  • Sample240604-nrwrhafd27
  • SHA256 6735843446f82faa6119e693ec4b2d8f287a312c1dd6a0c2350abc4825cfd974
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 64 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies registry class 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Browser.exe
    "C:\Users\Admin\AppData\Local\Temp\Browser.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2440
    • C:\Users\Admin\AppData\Local\Temp\Browser.exe
      "C:\Users\Admin\AppData\Local\Temp\Browser.exe"
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4880
      • C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\QtWebEngineProcess.exe
        "C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\QtWebEngineProcess.exe" --type=renderer --disable-speech-api --enable-threaded-compositing --enable-features=AllowContentInitiatedDataUrlNavigations,TracingServiceInProcess --disable-features=BackgroundFetch,ConsolidatedMovementXY,DnsOverHttpsUpgrade,FormControlsRefresh,MojoVideoCapture,PictureInPicture,SmsReceiver,UseSkiaRenderer,WebPayments,WebUSB --lang=en-US --webengine-schemes=qrc:sLV --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=3 --mojo-platform-channel-handle=2468 /prefetch:1
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:864
      • C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\QtWebEngineProcess.exe
        "C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\QtWebEngineProcess.exe" --type=utility --enable-features=AllowContentInitiatedDataUrlNavigations,TracingServiceInProcess --disable-features=BackgroundFetch,ConsolidatedMovementXY,DnsOverHttpsUpgrade,FormControlsRefresh,MojoVideoCapture,PictureInPicture,SmsReceiver,UseSkiaRenderer,WebPayments,WebUSB --lang=en-US --service-sandbox-type=network --use-gl=angle --application-name=FM%20Browser --webengine-schemes=qrc:sLV --mojo-platform-channel-handle=2480 /prefetch:8
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        PID:3676

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        9ef7b4ea-84cd-4804-a4ba-2c6faf68d95f.tmp

        • Path C:\Users\Admin\AppData\Local\FM Browser\QtWebEngine\Default\9ef7b4ea-84cd-4804-a4ba-2c6faf68d95f.tmp
        • Size 626B
        • SHA256 7b4c98a1cfb6af047c77daaa327ec0e605f7ad7e7080174aeaab2797d3114c45
        • MD5 SHA1 SHA512

        MANIFEST-000001

        • Path C:\Users\Admin\AppData\Local\FM Browser\QtWebEngine\Default\Local Storage\leveldb\MANIFEST-000001
        • Size 41B
        • SHA256 f9d31b278e215eb0d0e9cd709edfa037e828f36214ab7906f612160fead4b2b4
        • MD5 SHA1 SHA512

        Network Persistent State~RFe58a7d4.TMP

        • Path C:\Users\Admin\AppData\Local\FM Browser\QtWebEngine\Default\Network Persistent State~RFe58a7d4.TMP
        • Size 59B
        • SHA256 226eec4486509917aa336afebd6ff65777b75b65f1fb06891d2a857a9421a974
        • MD5 SHA1 SHA512

        CURRENT

        • Path C:\Users\Admin\AppData\Local\FM Browser\QtWebEngine\Default\Session Storage\CURRENT
        • Size 16B
        • SHA256 0f1bad70c7bd1e0a69562853ec529355462fcd0423263a3d39d6d0d70b780443
        • MD5 SHA1 SHA512

        MSVCP140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\MSVCP140.dll
        • Size 576KB
        • SHA256 88f55d86b50b0a7e55e71ad2d8f7552146ba26e927230daf2e26ad3a971973c5
        • MD5 SHA1 SHA512 SSDEEP

        MSVCP140_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\MSVCP140_1.dll
        • Size 30KB
        • SHA256 446c48c1224c289bd3080087fe15d6759416d64f4136addf30086abd5415d83f
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Core.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Core.dll
        • Size 5.7MB
        • SHA256 8d2ff4ce9096ddccc4f4cd62c2e41fc854cfd1b0d6e8d296645a7f5fd4ae565a
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Gui.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Gui.dll
        • Size 6.7MB
        • SHA256 5e7d2d41b8b92a880e83b8cc0ca173f5da61218604186196787ee1600956be1e
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Network.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Network.dll
        • Size 1.3MB
        • SHA256 4ef341ae9302e793878020f0740b09b0f31cb380408a697f75c69fdbd20fc7a1
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Positioning.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Positioning.dll
        • Size 308KB
        • SHA256 8889372b8880e9ab78b86d863cfb1a7c4e22cfaa5360d3761bd03b9de10228bd
        • MD5 SHA1 SHA512 SSDEEP

        Qt5PrintSupport.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5PrintSupport.dll
        • Size 309KB
        • SHA256 783d4f1feb8dc0bc00acb8c094d6c1ab39ac6b5858874e60dd3d45677af4307a
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Qml.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Qml.dll
        • Size 3.4MB
        • SHA256 30035484c81590976627f8face9507caa8581a7dc7630cccf6a8d6de65cab707
        • MD5 SHA1 SHA512 SSDEEP

        Qt5QmlModels.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5QmlModels.dll
        • Size 428KB
        • SHA256 51e4e5a5e91f78774c44f69b599fae4735277ef2918f7061778615cb5c4f6e81
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Quick.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Quick.dll
        • Size 4.0MB
        • SHA256 c81ad3c1111544064b1830c6f1aef3c1fd13b401546ab3b852d697c0f4d854b3
        • MD5 SHA1 SHA512 SSDEEP

        Qt5QuickWidgets.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5QuickWidgets.dll
        • Size 80KB
        • SHA256 d82e8df844ac7b1d0a71a897ce7c93ba8601bfee6413c8a1206b0b7cbf69d02f
        • MD5 SHA1 SHA512 SSDEEP

        Qt5WebChannel.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5WebChannel.dll
        • Size 130KB
        • SHA256 b4779c806f60183899c2027dd919c133062de83f7395aa40c1c32e6c6498de37
        • MD5 SHA1 SHA512 SSDEEP

        Qt5WebEngineWidgets.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5WebEngineWidgets.dll
        • Size 244KB
        • SHA256 2bd29d50306ac49f1df65c22e736a873f3021a0fb65f950271161a2609056e1f
        • MD5 SHA1 SHA512 SSDEEP

        Qt5Widgets.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\Qt5Widgets.dll
        • Size 5.2MB
        • SHA256 3788c669d4b645e5a576de9fc77fca776bf516d43c89143dc2ca28291ba14358
        • MD5 SHA1 SHA512 SSDEEP

        VCRUNTIME140_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\bin\VCRUNTIME140_1.dll
        • Size 43KB
        • SHA256 1f0f5f2ce671e0f68cf96176721df0e5e6f527c8ca9cfa98aa875b5a3816d460
        • MD5 SHA1 SHA512 SSDEEP

        qtlocation_en.qm

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\Qt5\translations\qtlocation_en.qm
        • Size 16B
        • SHA256 9959b510b15d18937848ad13007e30459d2e993c67e564badbfc18f935695c85
        • MD5 SHA1 SHA512

        QtCore.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtCore.pyd
        • Size 2.4MB
        • SHA256 5a2aed6f96abec6905e6a36d33bc00d2c23e13f6333ea0545a32ab57b33a7c47
        • MD5 SHA1 SHA512 SSDEEP

        QtGui.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtGui.pyd
        • Size 2.4MB
        • SHA256 8c425d163b0c650cb8dc4662625de4998bed2ad9a3f2e04a8664e2e72a69f845
        • MD5 SHA1 SHA512 SSDEEP

        QtNetwork.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtNetwork.pyd
        • Size 692KB
        • SHA256 c7c12c09a86e1a6b935b94c9939065827a389377874d85294186791500b72c2d
        • MD5 SHA1 SHA512 SSDEEP

        QtWebChannel.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtWebChannel.pyd
        • Size 37KB
        • SHA256 33553c789249d406ea242ab24f4786982235824ce48056f9108118281ed9f538
        • MD5 SHA1 SHA512 SSDEEP

        QtWebEngineWidgets.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtWebEngineWidgets.pyd
        • Size 222KB
        • SHA256 78327dac1f28f9907f10a25198017727da330fb04f1c4ba2fec6e33b854f7b1d
        • MD5 SHA1 SHA512 SSDEEP

        QtWidgets.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\QtWidgets.pyd
        • Size 4.9MB
        • SHA256 e732f15729fa69c3067dc33abb60e241570398aa9ab3359d9ff2a9714d1a1e4c
        • MD5 SHA1 SHA512 SSDEEP

        sip.cp312-win_amd64.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\PyQt5\sip.cp312-win_amd64.pyd
        • Size 117KB
        • SHA256 4e1a8a32a84dd2098eea849a804885ce7cd0fb7c6fa3513f1cb60bc4e7578171
        • MD5 SHA1 SHA512 SSDEEP

        VCRUNTIME140.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\VCRUNTIME140.dll
        • Size 116KB
        • SHA256 4d292623516f65c80482081e62d5dadb759dc16e851de5db24c3cbb57b87db83
        • MD5 SHA1 SHA512 SSDEEP

        VCRUNTIME140_1.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\VCRUNTIME140_1.dll
        • Size 48KB
        • SHA256 a113f192195f245f17389e6ecbed8005990bcb2476ddad33f7c4c6c86327afe5
        • MD5 SHA1 SHA512 SSDEEP

        _bz2.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\_bz2.pyd
        • Size 83KB
        • SHA256 f81dc49eac5ecc528e628175add2ff6bda695a93ea76671d7187155aa6326abb
        • MD5 SHA1 SHA512 SSDEEP

        _decimal.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\_decimal.pyd
        • Size 245KB
        • SHA256 e4104e47399d3f635a14d649f61250e9fd37f7e65c81ffe11f099923f8532577
        • MD5 SHA1 SHA512 SSDEEP

        _hashlib.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\_hashlib.pyd
        • Size 64KB
        • SHA256 79c4cde23397b9a35b54a3c2298b3c7a844454f4387cb0693f15e4facd227dd2
        • MD5 SHA1 SHA512 SSDEEP

        _lzma.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\_lzma.pyd
        • Size 156KB
        • SHA256 a6e2a5bb7a33ad9054f178786a031a46ea560faeef1fb96259331500aae9154c
        • MD5 SHA1 SHA512 SSDEEP

        _socket.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\_socket.pyd
        • Size 81KB
        • SHA256 7daff6aa3851a913ed97995702a5dfb8a27cb7cf00fb496597be777228d7564a
        • MD5 SHA1 SHA512 SSDEEP

        base_library.zip

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\base_library.zip
        • Size 1.3MB
        • SHA256 8584f0eb44456a275e3bc69626e3acad595546fd78de21a946b2eb7d6ba02288
        • MD5 SHA1 SHA512 SSDEEP

        libcrypto-3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\libcrypto-3.dll
        • Size 5.0MB
        • SHA256 05fe080eab7fc535c51e10c1bd76a2f3e6217f9c91a25034774588881c3f99de
        • MD5 SHA1 SHA512 SSDEEP

        python3.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\python3.dll
        • Size 66KB
        • SHA256 d2e348e615a5d3b08b0bac29b91f79b32f0c1d0be48976450042462466b51123
        • MD5 SHA1 SHA512 SSDEEP

        python312.dll

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\python312.dll
        • Size 6.6MB
        • SHA256 c98ba3354a7d1f69bdca42560feec933ccba93afcc707391049a065e1079cddb
        • MD5 SHA1 SHA512 SSDEEP

        select.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\select.pyd
        • Size 29KB
        • SHA256 680df34fb908c49410ac5f68a8c05d92858acd111e62d1194d15bdce520bd6c3
        • MD5 SHA1 SHA512 SSDEEP

        unicodedata.pyd

        • Path C:\Users\Admin\AppData\Local\Temp\_MEI24402\unicodedata.pyd
        • Size 1.1MB
        • SHA256 10ffd5207eeff5a836b330b237d766365d746c30e01abf0fd01f78548d1f1b04
        • MD5 SHA1 SHA512 SSDEEP

        memory/864-1648-0x00007FFA22B20000-0x00007FFA22F18000-memory.dmp

        memory/864-1637-0x000001F82B440000-0x000001F82B441000-memory.dmp

        memory/864-1636-0x00007FFA44B90000-0x00007FFA44B91000-memory.dmp

        memory/864-1635-0x00007FFA43B50000-0x00007FFA43B51000-memory.dmp

        memory/864-1707-0x000001F82B410000-0x000001F82B439000-memory.dmp

        memory/3676-1638-0x00007FFA22B20000-0x00007FFA22F18000-memory.dmp

        memory/4880-1622-0x00007FFA22B20000-0x00007FFA22F18000-memory.dmp

        memory/4880-1604-0x00007FFA22F20000-0x00007FFA23185000-memory.dmp

        memory/4880-1600-0x00007FFA23DA0000-0x00007FFA24290000-memory.dmp

        memory/4880-1601-0x00007FFA23190000-0x00007FFA236D1000-memory.dmp

        memory/4880-1584-0x00007FFA35490000-0x00007FFA356F3000-memory.dmp