Analysis
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max time kernel
298s -
max time network
269s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
07-07-2021 16:18
Static task
static1
Behavioral task
behavioral1
Sample
073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe
Resource
win7v20210408
Behavioral task
behavioral2
Sample
073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe
Resource
win10v20210410
General
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Target
073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe
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Size
31.2MB
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MD5
4ffd999d6ac629c27e1a9229c8e0ddd6
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SHA1
00b8e8cce15d86bf05ea1dfdc6a6bc779c24dedc
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SHA256
073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3
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SHA512
b91ef53301c2d9e3324f50b96d20f7d24c5db747679a10a30520a68f362487c8f48721c4bf92ad4635023ac4899184260e4b2def2ff31040bc0afbee77ffb825
Malware Config
Signatures
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Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Executes dropped EXE 1 IoCs
pid Process 188 drpbx.exe -
Modifies extensions of user files 5 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File created C:\Users\Admin\Pictures\NewUnregister.tif.fun drpbx.exe File created C:\Users\Admin\Pictures\ReadMeasure.tif.fun drpbx.exe File created C:\Users\Admin\Pictures\ReceiveTest.tif.fun drpbx.exe File created C:\Users\Admin\Pictures\CompareCheckpoint.tif.fun drpbx.exe File created C:\Users\Admin\Pictures\LimitRead.png.fun drpbx.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\firefox.exe = "C:\\Users\\Admin\\AppData\\Roaming\\Frfx\\firefox.exe" 073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\5313_32x32x32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1702.312.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-36_altform-colorize.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-150_8wekyb3d8bbwe\Assets\contrast-black\Movie-TVStoreLogo.scale-150_contrast-black.png drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\nls\uk-ua\ui-strings.js.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\sv-se\ui-strings.js.fun drpbx.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\update_tracking\org-netbeans-modules-templates.xml drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\app-center\js\selector.js drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailMediumTile.scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_x64__8wekyb3d8bbwe\Assets\SecondaryTiles\Home\LargeTile.scale-200.png drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\add-account\images\themes\dark\bg_patterns_header.png.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\dj_60x42.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\gq_60x42.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\AppxManifest.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\4613_32x32x32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_16.511.8780.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-20_altform-fullcolor.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_25.25.13009.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubBadgeLogo.scale-100_contrast-high.png drpbx.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\modules\org-openide-windows.jar drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-files\js\nls\zh-tw\ui-strings.js.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\scan-files\js\nls\es-es\ui-strings.js.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.OneConnect_2.1701.277.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\OneConnectMedTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_1.1702.28017.0_x64__8wekyb3d8bbwe\Assets\Images\Stickers\Thumbnails\Sticker_Icon_NinjaCat.png drpbx.exe File created C:\Program Files\Microsoft Office\root\rsod\powerpointmui.msi.16.en-us.boot.tree.dat.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-black\HxA-Yahoo-Light.scale-400.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarSmallTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\ext\nashorn.jar drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\contrast-black\Weather_BadgeLogo.scale-100.png drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\ob-preview\js\nls\root\ui-strings.js.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_neutral_resources.scale-150_8wekyb3d8bbwe\Assets\Logo.scale-150.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteSectionSmallTile.scale-125.png drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HighBeamCardLogo.png drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\js\nls\nl-nl\ui-strings.js drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\js\nls\de-de\ui-strings.js.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\reviews\js\nls\tr-tr\ui-strings.js.fun drpbx.exe File created C:\Program Files\ConvertFromWait.zip.fun drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\contrast-white\Weather_TileWide.scale-100.png drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\s_sendforsignature_18.svg drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\6584_32x32x32.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\ExchangeSmallTile.scale-125.png drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Candara.xml drpbx.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml.fun drpbx.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\images\s_agreement_filetype.svg.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\tr-tr\ui-strings.js.fun drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\editpdf\js\nls\ru-ru\ui-strings.js drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\pages-app\js\nls\fi-fi\ui-strings.js.fun drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\signatures\images\themes\dark\illustrations.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_16.511.8780.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\PhotosMedTile.scale-100.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\contrast-black\OneNoteNotebookWideTile.scale-150.png drpbx.exe File created C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\plugins\org.eclipse.jetty.server_8.1.14.v20131031.jar.fun drpbx.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\lib\visualvm\platform\config\Modules\org-netbeans-modules-queries.xml drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\fillandsign.svg drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer\images\new_icons.png drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\js\nls\sv-se\ui-strings.js drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1.10531.0_x64__8wekyb3d8bbwe\BuildInfo.xml drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1702.333.0_x64__8wekyb3d8bbwe\Assets\AlarmsMedTile.contrast-white_scale-200.png drpbx.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\ThemeCreation\Effects\effects_lobby_dust.jpg drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\themes\dark\acrobat_pdf.svg drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\win-scrollbar\themes\dark\arrow-right.png.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\task-handler\js\plugin.js.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\desktop-connector-files\js\nls\fi-fi\ui-strings.js.fun drpbx.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\img\tools\@1x\themes\dark\[email protected] drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\aic_file_icons_retina_thumb_new.png drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\file_types\themes\dark\s_shared_single_filetype.svg drpbx.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\app\dev\nls\cs-cz\ui-strings.js drpbx.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 35 IoCs
pid Process 3924 073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe 188 drpbx.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3924 073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe Token: SeDebugPrivilege 188 drpbx.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3924 wrote to memory of 188 3924 073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe 78 PID 3924 wrote to memory of 188 3924 073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe"C:\Users\Admin\AppData\Local\Temp\073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3924 -
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\073dec2ee0bdfaec89aa903cf9a19bde83ed68477d6bbccdf29489f4e6ced4f3.exe2⤵
- Executes dropped EXE
- Modifies extensions of user files
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:188
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