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Trojan.Siggen14.60095

Added to the Dr.Web virus database: 2021-08-13

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Classes\loomDesktop\shell\open\command] '' = '"%LOCALAPPDATA%\Programs\Loom\Loom.exe" "%1"'
Malicious functions
Executes the following
  • '<SYSTEM32>\taskkill.exe' /F /Fi "IMAGENAME eq Loom Helper"
  • '<SYSTEM32>\taskkill.exe' /F /Fi "IMAGENAME eq Loom"
Injects code into
the following user processes:
  • loom.exe
Modifies file system
Creates the following files
  • %TEMP%\nshbaf6.tmp\system.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-sysinfo-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-timezone-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-util-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-conio-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-convert-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-environment-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-string-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-synch-l1-2-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-synch-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-math-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-multibyte-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-private-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-process-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-runtime-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-stdio-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-filesystem-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-locale-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-console-l1-2-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-heap-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-interlocked-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-debug-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-errorhandling-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-file-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-file-l1-2-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-file-l2-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-handle-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-profile-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-string-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-rtlsupport-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-localization-l1-2-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-memory-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-namedpipe-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-processenvironment-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-processthreads-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-processthreads-l1-1-1.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-heap-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-libraryloader-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-datetime-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-time-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\loom-recorder-production.exe
  • %APPDATA%\loom\crashpad\settings.dat
  • %APPDATA%\loom\sentry\scope_v2.json
  • %APPDATA%\loom\fontlookuptablecache\font_unique_name_table.pb
  • %APPDATA%\loom\storage\current_audio_device.json.1916926871
  • %APPDATA%\loom\storage\current_video_device.json.3504810530
  • %APPDATA%\loom\storage\selected_audio_devices.json.3380527812
  • %HOMEPATH%\desktop\loom.lnk
  • %APPDATA%\loom\logs\main.log
  • %APPDATA%\loom\storage\selected_video_devices.json.1677086800
  • %APPDATA%\loom\gpucache\data_1
  • %APPDATA%\loom\gpucache\data_2
  • %APPDATA%\loom\gpucache\data_3
  • %APPDATA%\loom\cache\index
  • %APPDATA%\loom\cache\data_0
  • %APPDATA%\loom\cache\data_1
  • %APPDATA%\loom\gpucache\index
  • %APPDATA%\loom\gpucache\data_0
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\cmdmp3.exe
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-crt-utility-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\uninstall loom.exe
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\msvcp140.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\msvcp140_1.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\msvcp140_2.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\msvcp140_codecvt_ids.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\ucrtbase.dll
  • %APPDATA%\microsoft\windows\start menu\programs\loom.lnk
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\concrt140.dll
  • %TEMP%\nshbaf6.tmp\winshell.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\vccorlib140.dll
  • %LOCALAPPDATA%\programs\loom\swiftshader\libegl.dll
  • %LOCALAPPDATA%\programs\loom\swiftshader\libglesv2.dll
  • %LOCALAPPDATA%\programs\loom\vk_swiftshader.dll
  • %LOCALAPPDATA%\programs\loom\vulkan-1.dll
  • %LOCALAPPDATA%\loom-updater\installer.exe
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\vcruntime140.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\vcruntime140_1.dll
  • %LOCALAPPDATA%\programs\loom\resources\elevate.exe
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\api-ms-win-core-console-l1-1-0.dll
  • %LOCALAPPDATA%\programs\loom\loom.exe
  • %LOCALAPPDATA%\programs\loom\libglesv2.dll
  • %LOCALAPPDATA%\programs\loom\locales\es-419.pak
  • %LOCALAPPDATA%\programs\loom\locales\es.pak
  • %LOCALAPPDATA%\programs\loom\locales\et.pak
  • %LOCALAPPDATA%\programs\loom\locales\fa.pak
  • %LOCALAPPDATA%\programs\loom\locales\fi.pak
  • %LOCALAPPDATA%\programs\loom\locales\fil.pak
  • %LOCALAPPDATA%\programs\loom\locales\en-gb.pak
  • %LOCALAPPDATA%\programs\loom\locales\kn.pak
  • %LOCALAPPDATA%\programs\loom\locales\el.pak
  • %LOCALAPPDATA%\programs\loom\locales\hi.pak
  • %LOCALAPPDATA%\programs\loom\locales\hr.pak
  • %LOCALAPPDATA%\programs\loom\locales\hu.pak
  • %LOCALAPPDATA%\programs\loom\locales\id.pak
  • %LOCALAPPDATA%\programs\loom\locales\it.pak
  • %LOCALAPPDATA%\programs\loom\locales\ja.pak
  • %LOCALAPPDATA%\programs\loom\locales\gu.pak
  • %LOCALAPPDATA%\programs\loom\locales\fr.pak
  • %LOCALAPPDATA%\programs\loom\locales\he.pak
  • %LOCALAPPDATA%\programs\loom\locales\da.pak
  • %LOCALAPPDATA%\programs\loom\licenses.chromium.html
  • %TEMP%\nshbaf6.tmp\spiderbanner.dll
  • %TEMP%\nshbaf6.tmp\nsprocess.dll
  • %TEMP%\nshbaf6.tmp\app-64.7z
  • %TEMP%\nshbaf6.tmp\nsis7z.dll
  • %LOCALAPPDATA%\programs\loom\chrome_100_percent.pak
  • %LOCALAPPDATA%\programs\loom\chrome_200_percent.pak
  • %LOCALAPPDATA%\programs\loom\locales\de.pak
  • %LOCALAPPDATA%\programs\loom\locales\ko.pak
  • %TEMP%\nshbaf6.tmp\stdutils.dll
  • %LOCALAPPDATA%\programs\loom\locales\am.pak
  • %LOCALAPPDATA%\programs\loom\locales\ar.pak
  • %LOCALAPPDATA%\programs\loom\locales\bg.pak
  • %LOCALAPPDATA%\programs\loom\locales\bn.pak
  • %LOCALAPPDATA%\programs\loom\locales\ca.pak
  • %LOCALAPPDATA%\programs\loom\locales\cs.pak
  • %LOCALAPPDATA%\programs\loom\license.electron.txt
  • %LOCALAPPDATA%\programs\loom\icudtl.dat
  • %LOCALAPPDATA%\programs\loom\locales\en-us.pak
  • %LOCALAPPDATA%\programs\loom\locales\lt.pak
  • %LOCALAPPDATA%\programs\loom\locales\zh-cn.pak
  • %LOCALAPPDATA%\programs\loom\resources.pak
  • %LOCALAPPDATA%\programs\loom\resources\app-update.yml
  • %LOCALAPPDATA%\programs\loom\resources\app.asar
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\assets\application-icons\app-logo.ico
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\assets\sounds\airhorn.mp3
  • %LOCALAPPDATA%\programs\loom\locales\vi.pak
  • %LOCALAPPDATA%\programs\loom\locales\tr.pak
  • %LOCALAPPDATA%\programs\loom\locales\zh-tw.pak
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\assets\sounds\end-recording.mp3
  • %LOCALAPPDATA%\programs\loom\v8_context_snapshot.bin
  • %LOCALAPPDATA%\programs\loom\vk_swiftshader_icd.json
  • %LOCALAPPDATA%\programs\loom\d3dcompiler_47.dll
  • %LOCALAPPDATA%\programs\loom\ffmpeg.dll
  • %LOCALAPPDATA%\programs\loom\libegl.dll
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\assets\sounds\screenshot-camera-shutter.mp3
  • %LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\assets\sounds\start-recording.mp3
  • %LOCALAPPDATA%\programs\loom\snapshot_blob.bin
  • %LOCALAPPDATA%\programs\loom\locales\uk.pak
  • %LOCALAPPDATA%\programs\loom\locales\th.pak
  • %LOCALAPPDATA%\programs\loom\locales\lv.pak
  • %LOCALAPPDATA%\programs\loom\locales\mr.pak
  • %LOCALAPPDATA%\programs\loom\locales\ms.pak
  • %LOCALAPPDATA%\programs\loom\locales\nb.pak
  • %LOCALAPPDATA%\programs\loom\locales\nl.pak
  • %LOCALAPPDATA%\programs\loom\locales\pl.pak
  • %LOCALAPPDATA%\programs\loom\locales\pt-br.pak
  • %LOCALAPPDATA%\programs\loom\locales\pt-pt.pak
  • %LOCALAPPDATA%\programs\loom\locales\ml.pak
  • %LOCALAPPDATA%\programs\loom\locales\ro.pak
  • %LOCALAPPDATA%\programs\loom\locales\sk.pak
  • %LOCALAPPDATA%\programs\loom\locales\sl.pak
  • %LOCALAPPDATA%\programs\loom\locales\sr.pak
  • %LOCALAPPDATA%\programs\loom\locales\sv.pak
  • %LOCALAPPDATA%\programs\loom\locales\sw.pak
  • %LOCALAPPDATA%\programs\loom\locales\ta.pak
  • %LOCALAPPDATA%\programs\loom\locales\te.pak
  • %LOCALAPPDATA%\programs\loom\locales\ru.pak
  • %APPDATA%\loom\cache\data_2
  • %APPDATA%\loom\cache\data_3
Deletes the following files
  • %TEMP%\nshbaf6.tmp\app-64.7z
  • %TEMP%\nshbaf6.tmp\nsis7z.dll
  • %TEMP%\nshbaf6.tmp\nsprocess.dll
  • %TEMP%\nshbaf6.tmp\spiderbanner.dll
  • %TEMP%\nshbaf6.tmp\stdutils.dll
  • %TEMP%\nshbaf6.tmp\system.dll
  • %TEMP%\nshbaf6.tmp\winshell.dll
Moves the following files
  • from %APPDATA%\loom\storage\current_audio_device.json.1916926871 to %APPDATA%\loom\storage\current_audio_device.json
  • from %APPDATA%\loom\storage\current_video_device.json.3504810530 to %APPDATA%\loom\storage\current_video_device.json
  • from %APPDATA%\loom\storage\selected_audio_devices.json.3380527812 to %APPDATA%\loom\storage\selected_audio_devices.json
  • from %APPDATA%\loom\storage\selected_video_devices.json.1677086800 to %APPDATA%\loom\storage\selected_video_devices.json
Network activity
Connects to
  • 'ht#######ke.logs.datadoghq.com':443
  • 'ic###azip.com':443
  • 'ca####e.apple.com':443
TCP
Other
  • 'ht#######ke.logs.datadoghq.com':443
  • 'ic###azip.com':443
  • 'ca####e.apple.com':443
UDP
  • DNS ASK ht#######ke.logs.datadoghq.com
  • DNS ASK my##.#pendns.com
  • DNS ASK ic###azip.com
  • DNS ASK ca####e.apple.com
Miscellaneous
Searches for the following windows
  • ClassName: '#32770' WindowName: ''
  • ClassName: 'Chrome_MessageWindow' WindowName: '%APPDATA%\Loom'
  • ClassName: '' WindowName: ''
Creates and executes the following
  • '%LOCALAPPDATA%\programs\loom\loom.exe'
  • '%LOCALAPPDATA%\programs\loom\loom.exe' --type=crashpad-handler --user-data-dir=%APPDATA%\Loom /prefetch:7 --no-rate-limit --monitor-self-annotation=ptype=crashpad-handler --database=%APPDATA%\Loom\Crashpad --url=https://o398470.inge...
  • '%LOCALAPPDATA%\programs\loom\loom.exe' --type=gpu-process --field-trial-handle=1256,13907457679212755056,8182311117204263249,131072 --enable-features=WebAssemblySimd --disable-features=CookiesWithoutSameSiteMustBeSecure,SameSiteByDe...
  • '%LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\loom-recorder-production.exe' "{\"type\":\"daemon-start\",\"payload\":{\"daemonOptions\":{\"secret\":\"ad24618da18d43c7b570ed2bc962969d\",\"pipePath\":\"\\\\.\\pipe\\loom_ipc_92801\"}}}"
  • '%LOCALAPPDATA%\programs\loom\loom.exe' --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=1256,13907457679212755056,8182311117204263249,131072 --enable-features=WebAssemblySimd --disable-features=Coo...
  • '%LOCALAPPDATA%\programs\loom\loom.exe' --type=renderer --autoplay-policy=no-user-gesture-required --field-trial-handle=1256,13907457679212755056,8182311117204263249,131072 --enable-features=WebAssemblySimd --disable-features=Cookies...
  • '%LOCALAPPDATA%\programs\loom\loom.exe' --type=utility --utility-sub-type=audio.mojom.AudioService --field-trial-handle=1256,13907457679212755056,8182311117204263249,131072 --enable-features=WebAssemblySimd --disable-features=Cookies...
  • '<SYSTEM32>\cmd.exe' /d /s /c "wmic path win32_VideoController get name"' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /d /s /c "taskkill.exe /F /Fi "IMAGENAME eq Loom""' (with hidden window)
  • '<SYSTEM32>\cmd.exe' /d /s /c "taskkill.exe /F /Fi "IMAGENAME eq Loom Helper""' (with hidden window)
  • '%LOCALAPPDATA%\programs\loom\resources\app.asar.unpacked\dist\binaries\loom-recorder-production.exe' "{\"type\":\"daemon-start\",\"payload\":{\"daemonOptions\":{\"secret\":\"ad24618da18d43c7b570ed2bc962969d\",\"pipePath\":\"\\\\.\\pipe\\loom_ipc_92801\"}}}"' (with hidden window)
Executes the following
  • '<SYSTEM32>\cmd.exe' /d /s /c "wmic path win32_VideoController get name"
  • '<SYSTEM32>\wbem\wmic.exe' path win32_VideoController get name
  • '<SYSTEM32>\cmd.exe' /d /s /c "taskkill.exe /F /Fi "IMAGENAME eq Loom""
  • '<SYSTEM32>\cmd.exe' /d /s /c "taskkill.exe /F /Fi "IMAGENAME eq Loom Helper""

Recommandations pour le traitement

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  1. Si votre appareil mobile fonctionne correctement, veuillez télécharger et installer sur votre appareil mobile Dr.Web pour Android. Lancez un scan complet et suivez les recommandations sur la neutralisation des menaces détectées.
  2. Si l'appareil mobile est bloqué par le Trojan de la famille Android.Locker (un message sur la violation grave de la loi ou la demande d'une rançon est affiché sur l'écran de l'appareil mobile), procédez comme suit:
    • démarrez votre Smartphone ou votre tablette en mode sans échec (si vous ne savez pas comment faire, consultez la documentation de l'appareil mobile ou contactez le fabricant) ;
    • puis téléchargez et installez sur votre appareil mobile Dr.Web pour Android et lancez un scan complet puis suivez les recommandations sur la neutralisation des menaces détectées ;
    • Débranchez votre appareil et rebranchez-le.

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