Resubmissions
08-03-2024 15:04
240308-sfnzqsaa47 10Analysis
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max time kernel
1190s -
max time network
1171s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
14-04-2024 11:53
Static task
static1
Behavioral task
behavioral1
Sample
bb8fce33b3478355c5a6c4f52f6ff83b.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
bb8fce33b3478355c5a6c4f52f6ff83b.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
bb8fce33b3478355c5a6c4f52f6ff83b.exe
Resource
win10v2004-20240412-en
Behavioral task
behavioral4
Sample
bb8fce33b3478355c5a6c4f52f6ff83b.exe
Resource
win11-20240412-en
General
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Target
bb8fce33b3478355c5a6c4f52f6ff83b.exe
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Size
1.1MB
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MD5
bb8fce33b3478355c5a6c4f52f6ff83b
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SHA1
81ed80cb69b5c6e65bff71b8c53160a467099475
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SHA256
6192163bbb9343a274904093b94d6b12111a88bf24b58cbf9ed2c1463503e022
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SHA512
a1f9bad36ff0a866db0aaf918cd70ed235c1bf1679dbadea8a5e2746686e2736833e7fe10d6caec459106e90ad9efdd55ca2b66afb1b2f7c507cd46363cbed69
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SSDEEP
24576:UlTshPoDiXbNSXIN6L/Y1ja1zwdY4k2A/QaFcEYZFj:UshPjNSXGic+FwTbA4SR2
Malware Config
Signatures
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Troldesh, Shade, Encoder.858
Troldesh is a ransomware spread by malspam.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-4041115548-3858121278-1660933110-1000\Software\Microsoft\Active Setup\Installed Components explorer.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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resource yara_rule behavioral4/memory/4032-1-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-2-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-3-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-4-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-5-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-8-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-11-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-12-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-14-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-15-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-16-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-17-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-18-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-19-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-22-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-23-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-24-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-25-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-26-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-27-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-28-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-29-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-30-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-31-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-32-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-33-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-34-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-35-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-36-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-37-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-38-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-39-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-40-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-41-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-42-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-43-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-44-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-45-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-46-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-47-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-48-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-49-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-50-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-51-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-52-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-53-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-54-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-55-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-56-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-57-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-58-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-59-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-60-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-61-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-62-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-63-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-64-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-65-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-66-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-67-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-68-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-69-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-70-0x0000000000400000-0x0000000000608000-memory.dmp upx behavioral4/memory/4032-71-0x0000000000400000-0x0000000000608000-memory.dmp upx -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4041115548-3858121278-1660933110-1000\Software\Microsoft\Windows\CurrentVersion\Run\Client Server Runtime Subsystem = "\"C:\\ProgramData\\Windows\\csrss.exe\"" bb8fce33b3478355c5a6c4f52f6ff83b.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Client Server Runtime Subsystem = "\"C:\\ProgramData\\Windows\\csrss.exe\"" bb8fce33b3478355c5a6c4f52f6ff83b.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives 3 TTPs 1 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\F: bb8fce33b3478355c5a6c4f52f6ff83b.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4041115548-3858121278-1660933110-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Roaming\\282B1AD1282B1AD1.bmp" bb8fce33b3478355c5a6c4f52f6ff83b.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_2.2106.2807.0_x64__8wekyb3d8bbwe\Assets\KeywordSpotters\en-AU\Cortana.bin bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\c2rpridslicensefiles_auto.xml bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\contrast-black\BadgeLogo.scale-150_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Paint_10.2104.17.0_x64__8wekyb3d8bbwe\Assets\contrast-white\PaintMedTile.scale-200.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\SplashScreen.scale-200_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\StoreSplashScreen.scale-100_altform-colorful_theme-light.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsNotepad_10.2102.13.0_x64__8wekyb3d8bbwe\Assets\contrast-white\NotepadAppList.targetsize-48_altform-unplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_21.21030.25003.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-40_altform-lightunplated_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\contrast-black\BadgeLogo.scale-100_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\theme\node_modules\@uifabric\utilities\lib-commonjs\createRef.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\BlurredGradientBackground.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.42251.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppPackageAppList.targetsize-80_altform-unplated_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\en\LocalizedStrings.xml bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.scale-100_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.40978.0_x64__8wekyb3d8bbwe\Assets\contrast-white\WideTile.scale-125_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.40978.0_x64__8wekyb3d8bbwe\Assets\contrast-white\WideTile.scale-400_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-140.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\StoreMedTile.scale-200.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_11.2104.2.0_x64__8wekyb3d8bbwe\Assets\contrast-white\SnipSketchAppList.targetsize-36_altform-unplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\Assets\AppTiles\StoreAppList.targetsize-24_altform-unplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_x64__8wekyb3d8bbwe\Assets\AppTiles\MapsAppList.targetsize-72.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\Templates\1033\ONENOTE\16\Stationery\BLANK.ONE bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\theme\lib-commonjs\createTheme.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_12104.1001.1.0_x64__8wekyb3d8bbwe\Assets\AppTiles\StoreAppList.targetsize-40_altform-lightunplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Yahoo-Dark.scale-125.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\OutlookMailSmallTile.scale-400.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.32731.0_x64__8wekyb3d8bbwe\Assets\contrast-white\SplashScreen.scale-100_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingNews_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\NewsAppList.targetsize-80_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\fre\StartMenu_Win10_RTL.mp4 bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib\common\isConformant.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-48_altform-unplated_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_neutral_split.scale-125_8wekyb3d8bbwe\Win10\contrast-white\MicrosoftSolitaireSmallTile.scale-125_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.2104.12721.0_x64__8wekyb3d8bbwe\Images\FileWord32x32.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.40978.0_x64__8wekyb3d8bbwe\Assets\LargeTile.scale-100.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_10.2.41172.0_x64__8wekyb3d8bbwe\Assets\TipsAppList.targetsize-60_altform-unplated_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Java\jdk-1.8\legal\javafx\icu_web.md bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib\Label.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\FeedbackHubLargeTile.scale-100.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-72_altform-lightunplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_x64__8wekyb3d8bbwe\Win10\contrast-black\MicrosoftSolitaireMedTile.scale-100_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GamingApp_2105.900.24.0_x64__8wekyb3d8bbwe\Assets\Xbox_SplashScreen.scale-200_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_neutral_~_8wekyb3d8bbwe\AppxMetadata\AppxBundleManifest.xml bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\HxCalendarAppList.targetsize-48.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.32731.0_x64__8wekyb3d8bbwe\Assets\contrast-black\SmallTile.scale-125_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingNews_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\NewsAppList.targetsize-24_altform-lightunplated_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsStore_12104.1001.1.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AppTiles\StoreWideTile.scale-125.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-amd\components\DetailsList\DetailsRowFields.types.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\FeedbackHubSmallTile.scale-125.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppTiles\SplashScreen.scale-100.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.32731.0_x64__8wekyb3d8bbwe\Assets\AppList.scale-125.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_1.0.65.0_x64__8wekyb3d8bbwe\Images\contrast-black\PowerAutomateSquare50x50Logo.scale-200.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_2.2106.2807.0_x64__8wekyb3d8bbwe\Assets\Store\SmallTile.scale-400.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-80.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-30_altform-lightunplated_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\SmallTile.scale-200_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\contrast-white\FeedbackHubAppList.targetsize-60.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_12008.1001.1.0_x64__8wekyb3d8bbwe\AppxManifest.xml bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Getstarted_10.2.41172.0_neutral_split.scale-200_8wekyb3d8bbwe\Assets\TipsWideTile.scale-200_contrast-black.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsTerminal_1.6.10571.0_x64__8wekyb3d8bbwe\Images\Square44x44Logo.targetsize-16_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\MapsAppList.targetsize-40_altform-unplated_contrast-white.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_2.2106.2807.0_x64__8wekyb3d8bbwe\Assets\Store\Square150x150Logo.scale-400.png bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\theme\lib-amd\motion\index.js bb8fce33b3478355c5a6c4f52f6ff83b.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.targetsize-40_altform-unplated.png bb8fce33b3478355c5a6c4f52f6ff83b.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Interacts with shadow copies 2 TTPs 3 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4272 vssadmin.exe 3248 vssadmin.exe 3240 vssadmin.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-4041115548-3858121278-1660933110-1000\{17A42F19-E69B-41AE-BC34-C3FFE420382D} explorer.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe -
Suspicious use of AdjustPrivilegeToken 15 IoCs
description pid Process Token: SeBackupPrivilege 1188 vssvc.exe Token: SeRestorePrivilege 1188 vssvc.exe Token: SeAuditPrivilege 1188 vssvc.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe Token: SeShutdownPrivilege 2532 explorer.exe Token: SeCreatePagefilePrivilege 2532 explorer.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2532 explorer.exe 2532 explorer.exe -
Suspicious use of SendNotifyMessage 8 IoCs
pid Process 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe 2532 explorer.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4032 wrote to memory of 3240 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 95 PID 4032 wrote to memory of 3240 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 95 PID 4032 wrote to memory of 4272 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 99 PID 4032 wrote to memory of 4272 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 99 PID 4032 wrote to memory of 3248 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 101 PID 4032 wrote to memory of 3248 4032 bb8fce33b3478355c5a6c4f52f6ff83b.exe 101 -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\bb8fce33b3478355c5a6c4f52f6ff83b.exe"C:\Users\Admin\AppData\Local\Temp\bb8fce33b3478355c5a6c4f52f6ff83b.exe"1⤵
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4032 -
C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe List Shadows2⤵
- Interacts with shadow copies
PID:3240
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C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet2⤵
- Interacts with shadow copies
PID:4272
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C:\Windows\system32\vssadmin.exeC:\Windows\system32\vssadmin.exe List Shadows2⤵
- Interacts with shadow copies
PID:3248
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1188
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C:\Windows\explorer.exeexplorer.exe1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2532
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
116KB
MD587f26e0c51c9f6d2f8abcc87099b74a6
SHA1b502cab24cad74ffcf1887b1ff51e9bfee8d0595
SHA256b4a244750eca10795f0c6e0a35d44a711121fe4de70ad661856044b77eaf0a48
SHA51238ae249eb92f079708a23b60ce55f9958c2b8b062b2196e73f0265373163ebde5e2ce144910af9cdf9ef134bcdcc10e1fd8e494255902d44ef089dd352ed9e59