Overview
overview
10Static
static
BS.exe
windows7_x64
10BS.exe
windows10_x64
10BuildS.exe
windows7_x64
10BuildS.exe
windows10_x64
10READS.exe
windows7_x64
10READS.exe
windows10_x64
10baseus_nowin.exe
windows7_x64
10baseus_nowin.exe
windows10_x64
10rbs.exe
windows7_x64
10rbs.exe
windows10_x64
10scan.exe
windows7_x64
1scan.exe
windows10_x64
1Analysis
-
max time kernel
161s -
max time network
143s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
20-10-2021 09:41
Static task
static1
Behavioral task
behavioral1
Sample
BS.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
BS.exe
Resource
win10-en-20211014
Behavioral task
behavioral3
Sample
BuildS.exe
Resource
win7-en-20210920
Behavioral task
behavioral4
Sample
BuildS.exe
Resource
win10-en-20211014
Behavioral task
behavioral5
Sample
READS.exe
Resource
win7-en-20210920
Behavioral task
behavioral6
Sample
READS.exe
Resource
win10-en-20211014
Behavioral task
behavioral7
Sample
baseus_nowin.exe
Resource
win7-en-20210920
Behavioral task
behavioral8
Sample
baseus_nowin.exe
Resource
win10-en-20210920
Behavioral task
behavioral9
Sample
rbs.exe
Resource
win7-en-20211014
Behavioral task
behavioral10
Sample
rbs.exe
Resource
win10-en-20210920
Behavioral task
behavioral11
Sample
scan.exe
Resource
win7-en-20211014
Behavioral task
behavioral12
Sample
scan.exe
Resource
win10-en-20210920
General
-
Target
READS.exe
-
Size
53KB
-
MD5
9bd839a710177cf31625c09e321418ba
-
SHA1
82ebafbffb2ff94b91c037d5b51561d726ec32c5
-
SHA256
3e526ba55e9dc43928b592e879aa2ea896681e709a22c6b0b8911d6f264ed63c
-
SHA512
d3974db692f256f7733ccbf5d130bdcdcc18d18147b0522e8b0a3c10161604c1ee23e651cd132e3e61d81ff99c8af5a24abf465426aedc6dca1baa7adb53fc34
Malware Config
Extracted
C:\how_to_back_files.html
Signatures
-
Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\UndoRemove.tiff READS.exe File renamed C:\Users\Admin\Pictures\UndoRemove.tiff => C:\Users\Admin\Pictures\UndoRemove.tiff.read READS.exe File opened for modification C:\Users\Admin\Pictures\UnpublishInstall.tiff READS.exe File renamed C:\Users\Admin\Pictures\UnpublishInstall.tiff => C:\Users\Admin\Pictures\UnpublishInstall.tiff.read READS.exe File renamed C:\Users\Admin\Pictures\BlockConvert.raw => C:\Users\Admin\Pictures\BlockConvert.raw.read READS.exe File renamed C:\Users\Admin\Pictures\FormatHide.crw => C:\Users\Admin\Pictures\FormatHide.crw.read READS.exe File renamed C:\Users\Admin\Pictures\RestorePush.png => C:\Users\Admin\Pictures\RestorePush.png.read READS.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Drops desktop.ini file(s) 26 IoCs
description ioc Process File opened for modification C:\Users\Admin\Favorites\Links\desktop.ini READS.exe File opened for modification C:\Users\Public\desktop.ini READS.exe File opened for modification C:\Users\Public\Videos\desktop.ini READS.exe File opened for modification C:\Users\Public\Music\desktop.ini READS.exe File opened for modification C:\Users\Admin\Pictures\desktop.ini READS.exe File opened for modification C:\Users\Admin\Pictures\Saved Pictures\desktop.ini READS.exe File opened for modification C:\Users\Admin\Favorites\desktop.ini READS.exe File opened for modification C:\Users\Admin\Desktop\desktop.ini READS.exe File opened for modification C:\Users\Public\Libraries\desktop.ini READS.exe File opened for modification C:\Users\Public\Downloads\desktop.ini READS.exe File opened for modification C:\Users\Public\Documents\desktop.ini READS.exe File opened for modification C:\Users\Admin\Pictures\Camera Roll\desktop.ini READS.exe File opened for modification C:\Users\Admin\Music\desktop.ini READS.exe File opened for modification C:\Users\Admin\Documents\desktop.ini READS.exe File opened for modification C:\Users\Public\Pictures\desktop.ini READS.exe File opened for modification C:\Users\Public\Desktop\desktop.ini READS.exe File opened for modification C:\Users\Admin\Videos\desktop.ini READS.exe File opened for modification C:\Users\Admin\Searches\desktop.ini READS.exe File opened for modification C:\Program Files (x86)\desktop.ini READS.exe File opened for modification C:\Program Files\desktop.ini READS.exe File opened for modification C:\Users\Public\AccountPictures\desktop.ini READS.exe File opened for modification C:\Users\Admin\Saved Games\desktop.ini READS.exe File opened for modification C:\Users\Admin\OneDrive\desktop.ini READS.exe File opened for modification C:\Users\Admin\Links\desktop.ini READS.exe File opened for modification C:\Users\Admin\Downloads\desktop.ini READS.exe File opened for modification C:\Users\Admin\Contacts\desktop.ini READS.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.16112.11621.0_x64__8wekyb3d8bbwe\microsoft.system.package.metadata\resources. 6be96e9.pri READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Assets\SkypeAppList.targetsize-256_altform-unplated.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\2876_20x20x32.png READS.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Work\LTR\contrast-white\MedTile.scale-125.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Emoticons\small\smoking.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_1.1702.28017.0_x64__8wekyb3d8bbwe\Assets\Logos\Wide310x150\PaintWideTile.scale-125.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\AppxManifest.xml READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\nls\de-de\ui-strings.js READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteSectionGroupMedTile.scale-200.png READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\core\dev\nls\uk-ua\ui-strings.js READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_filter-default_32.svg READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\Snooze.scale-80.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\SmileyDefs.xml READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\cf_60x42.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_1.1702.28017.0_x64__8wekyb3d8bbwe\Assets\Videos\Help\Sticker.mp4 READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\en-il\ui-strings.js READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.10252.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppPackageAppList.targetsize-60_altform-unplated_contrast-black.png READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\images\themeless\edit_pdf_poster2x.jpg READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_1.1702.28017.0_x64__8wekyb3d8bbwe\Assets\Logos\SplashScreen\PaintSplashScreen.scale-200.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Awards\common\First_One’s_Free_.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_16.511.8780.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-96_altform-unplated_contrast-white.png READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\vi_get.svg READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\images\themeless\web_documentcloud_logo.png READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\GenericMailMediumTile.scale-125.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Emoticons\large\nerd.png READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroApp\ENU\CollectSignatures.aapp READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-256_altform-unplated_contrast-white.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\MainPageState2\spider_bp_920.jpg READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\Images\Ratings\Yelp4.scale-100.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\py_60x42.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\4642_20x20x32.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\SharpDXEngine\Rendering\Shaders\Builtin\HLSL\ConstantsPerObjectInstanced.fx READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\Assets\AppTiles\Spacer\9px.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-16_altform-unplated_contrast-black.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-256_altform-unplated.png READS.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\1033\how_to_back_files.html READS.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\msvcp120.dll READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1612.10312.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-32_contrast-black.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\microsoft.system.package.metadata\resources.857e5af3.pri READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1612.10312.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-256.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_16.511.8780.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-72_altform-colorize.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\en-us\jscripts\wefgallery_strings.js READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\sqlite3.dll READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Emoticons\large\talktothehand.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteSplashLogo.scale-400.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Themes\Beach\beach_12d.png READS.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.XboxApp_25.25.13009.0_neutral_split.scale-200_8wekyb3d8bbwe\Assets\GamesXboxHubAppList.scale-200.png READS.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\LTR\WideTile.scale-125.png READS.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\activity-badge\js\nls\fr-fr\how_to_back_files.html READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\5666_32x32x32.png READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\eml.scale-16.png READS.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\root\how_to_back_files.html READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\gt_60x42.png READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Arkadium.Win10.DailyChallenges\Assets\Popups\Upsell\dont_ask_button.jpg READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1702.333.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\StopwatchSmallTile.contrast-black_scale-100.png READS.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\exportpdfupsell-app\js\nls\en-ae\how_to_back_files.html READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Tracker\pdf.gif READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarWideTile.scale-200.png READS.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\tr-tr\how_to_back_files.html READS.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\s_filter_18.svg READS.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_1.1702.28017.0_x64__8wekyb3d8bbwe\CoreEngine\Data\3DBrush\round18.brush READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\7989_24x24x32.png READS.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-white\ExchangeBadge.scale-200.png READS.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\js\nls\he-il\how_to_back_files.html READS.exe