bqtlock | 9600db537e27db88ed2eca3be0ffab35cdb22a86a6dbb048d8deaf8f56944822

Analysis

max time kernel
31s
max time network
134s
platform
windows11-21h2_x64
resource
win11-20250610-en
resource tags

arch:x64arch:x86image:win11-20250610-enlocale:en-usos:windows11-21h2-x64system
submitted
10/10/2025, 13:46

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General

Target
BQT.exe
Size 8.5MB
Sample251010-q3ba2sdj6w
SHA256 9600db537e27db88ed2eca3be0ffab35cdb22a86a6dbb048d8deaf8f56944822
MD5 f558a0bcd20e01e46551a491c66114e8
SHA1 5befee1210165646b4bb6574663f01ace27c630e
SHA512 953d9aaa3c49b986c5986b717f9d9a9ed28c67f0435906d750a2b595df1852f3e5e581da46788227690c8a65b496e8d2db8f9983e20a9282093e524da497c620
SSDEEP 98304:1g3yi6usbCZCvohIIXhEFzSoGKzzL6wmaOreiF//Ydspy+DlL:1GkuOCQohOaHYa0q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

defense_evasion execution bqtlock impact persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Program Files\Common Files\System\ado\de-DE\README_TO_DECRYPT.txt

Ransom Note

YOUR FILES ARE ENCRYPTED! your files are not deleted but they are hidden to see them use cmd.exe and dir /a To recover your files, send 10 xmr to the following address:89RQN2EUmiX6vL7nTv3viqUAgbDpN4ab329zPCEgbceQJuS233uye4eXtYk3MXAtVoKNMmzgVrxXphLZbJPtearY7QVuApr After payment, send your HWID and transaction ID to: [email protected] we send you a decryptor and key DO NOT try to decrypt files yourself or use third-party tools, this will lead to permanent data loss.

Emails

[email protected]

Signatures

BQTLock
BQTLock is a ransomware that operates under a Ransomware-as-a-Service model.
ransomware bqtlock
Bqtlock family
bqtlock
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (3636) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Enumerates connected drives 3 TTPs 64 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\E:	BQT.exe
File opened (read-only)	\??\O:	BQT.exe
File opened (read-only)	\??\B:	BQT.exe
File opened (read-only)	\??\I:	BQT.exe
File opened (read-only)	\??\H:	explorer.exe
File opened (read-only)	\??\Q:	explorer.exe
File opened (read-only)	\??\R:	explorer.exe
File opened (read-only)	\??\U:	explorer.exe
File opened (read-only)	\??\N:	BQT.exe
File opened (read-only)	\??\P:	BQT.exe
File opened (read-only)	\??\Z:	BQT.exe
File opened (read-only)	\??\Y:	explorer.exe
File opened (read-only)	\??\E:	explorer.exe
File opened (read-only)	\??\J:	BQT.exe
File opened (read-only)	\??\S:	BQT.exe
File opened (read-only)	\??\I:	explorer.exe
File opened (read-only)	\??\N:	explorer.exe
File opened (read-only)	\??\B:	explorer.exe
File opened (read-only)	\??\L:	explorer.exe
File opened (read-only)	\??\V:	explorer.exe
File opened (read-only)	\??\N:	BQT.exe
File opened (read-only)	\??\O:	explorer.exe
File opened (read-only)	\??\A:	explorer.exe
File opened (read-only)	\??\X:	explorer.exe
File opened (read-only)	\??\Z:	explorer.exe
File opened (read-only)	\??\R:	BQT.exe
File opened (read-only)	\??\M:	explorer.exe
File opened (read-only)	\??\P:	explorer.exe
File opened (read-only)	\??\U:	BQT.exe
File opened (read-only)	\??\X:	BQT.exe
File opened (read-only)	\??\L:	explorer.exe
File opened (read-only)	\??\H:	BQT.exe
File opened (read-only)	\??\K:	BQT.exe
File opened (read-only)	\??\H:	BQT.exe
File opened (read-only)	\??\Z:	BQT.exe
File opened (read-only)	\??\A:	explorer.exe
File opened (read-only)	\??\B:	explorer.exe
File opened (read-only)	\??\P:	explorer.exe
File opened (read-only)	\??\V:	explorer.exe
File opened (read-only)	\??\Y:	explorer.exe
File opened (read-only)	\??\E:	BQT.exe
File opened (read-only)	\??\M:	BQT.exe
File opened (read-only)	\??\H:	explorer.exe
File opened (read-only)	\??\U:	explorer.exe
File opened (read-only)	\??\W:	explorer.exe
File opened (read-only)	\??\A:	BQT.exe
File opened (read-only)	\??\J:	BQT.exe
File opened (read-only)	\??\S:	BQT.exe
File opened (read-only)	\??\T:	BQT.exe
File opened (read-only)	\??\I:	BQT.exe
File opened (read-only)	\??\Y:	BQT.exe
File opened (read-only)	\??\R:	explorer.exe
File opened (read-only)	\??\S:	explorer.exe
File opened (read-only)	\??\O:	BQT.exe
File opened (read-only)	\??\G:	explorer.exe
File opened (read-only)	\??\K:	explorer.exe
File opened (read-only)	\??\N:	explorer.exe
File opened (read-only)	\??\W:	BQT.exe
File opened (read-only)	\??\G:	explorer.exe
File opened (read-only)	\??\Z:	explorer.exe
File opened (read-only)	\??\L:	BQT.exe
File opened (read-only)	\??\U:	BQT.exe
File opened (read-only)	\??\W:	BQT.exe
File opened (read-only)	\??\I:	explorer.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 11 IoCs

Web Service

T1102

flow	ioc
32	discord.com
35	discord.com
5	discord.com
31	discord.com
33	discord.com
34	discord.com
36	discord.com
4	discord.com
19	discord.com
23	discord.com
27	discord.com

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	icanhazip.com

Sets desktop wallpaper using registry 2 TTPs 4 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Control Panel\Desktop\Wallpaper = "C:\\Windows\\Temp\\bqt_wallpaper.bmp"	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Control Panel\Desktop\Wallpaper = "C:\\Windows\\Temp\\bqt_wallpaper.bmp"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Control Panel\Desktop\Wallpaper = "C:\\Windows\\Temp\\bqt_wallpaper.bmp"	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000\Control Panel\Desktop\Wallpaper = "C:\\Windows\\Temp\\bqt_wallpaper.bmp"	explorer.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1552 set thread context of 4236	1552	BQT.exe	79
PID 4236 set thread context of 4372	4236	explorer.exe	85
PID 6028 set thread context of 6076	6028	BQT.exe	89
PID 6076 set thread context of 1796	6076	explorer.exe	95

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.targetsize-20_altform-unplated.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Yahoo-Dark.scale-400.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.2008.32311.0_x64__8wekyb3d8bbwe\Assets\contrast-white\GetHelpAppList.targetsize-20_contrast-white.png.tmp	BQT.exe
File created	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\dom\getWindow.js.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_11.2104.2.0_x64__8wekyb3d8bbwe\Assets\contrast-white\SnipSketchAppList.targetsize-30.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_1.0.38.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-16_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Images\Square150x150Logo.scale-200.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_11.2104.2.0_neutral_split.scale-100_8wekyb3d8bbwe\SnippingTool\Assets\Wide310x150Logo.scale-100.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_1.0.22.0_x64__8wekyb3d8bbwe\AppxMetadata\CodeIntegrity.cat.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_1.0.36.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.targetsize-60_altform-lightunplated_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsTerminal_1.6.10571.0_x64__8wekyb3d8bbwe\TerminalThemeHelpers.dll.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsAlarms_1.0.36.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AlarmsBadgeLogo.scale-125.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.50.24002.0_x64__8wekyb3d8bbwe\GameBar.winmd.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubWideTile.scale-200.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-amd\components\DocumentCard\DocumentCardLocation.js.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.scale-125_contrast-black.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.Getstarted_10.2.41172.0_x64__8wekyb3d8bbwe\Assets\TipsAppList.scale-100_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_21.21030.25003.0_x64__8wekyb3d8bbwe\AppCS\Assets\OneDrive_consumer_systray_block_light.svg.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.50.24002.0_x64__8wekyb3d8bbwe\AppxSignature.p7x.tmp	BQT.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\combinepdf\js\nls\ro-ro\README_TO_DECRYPT.txt.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.2012.21.0_x64__8wekyb3d8bbwe\Assets\Graphing.targetsize-64_contrast-white.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-commonjs\components\DocumentCard\DocumentCardDetails.js.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Assets\LockScreenLogo.scale-200.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\contrast-black\FeedbackHubAppList.targetsize-64_altform-unplated.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.42251.0_x64__8wekyb3d8bbwe\Assets\FileIcons\FileLogoExtensions.targetsize-24.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxCalendarAppList.targetsize-36_altform-unplated.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.2104.12721.0_x64__8wekyb3d8bbwe\System.Private.Uri.dll.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.PowerAutomateDesktop_1.0.65.0_x64__8wekyb3d8bbwe\sv-SE\PAD.Console.Host.resources.dll.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-black\HxMailAppList.targetsize-30_altform-unplated.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-commonjs\components\Dropdown\utilities\DropdownSizePosCache.js.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\OutOfOffice.scale-200_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_1.0.36.0_x64__8wekyb3d8bbwe\Assets\AlarmsBadgeLogo.scale-200.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\Theme_Photo_RainbowCurve_Background_Dark.jpg.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.32731.0_x64__8wekyb3d8bbwe\Assets\contrast-black\StoreLogo.scale-125_contrast-black.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.2012.21.0_x64__8wekyb3d8bbwe\Assets\Standard.targetsize-16_contrast-black.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.42251.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppPackageAppList.targetsize-48_altform-unplated_contrast-white.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\OutOfOffice_Dark.scale-150.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_neutral_~_cw5n1h2txyewy\AppxSignature.p7x.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.21012.10511.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-40.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.People_10.1909.12456.0_x64__8wekyb3d8bbwe\Assets\PeopleAppList.targetsize-24_altform-unplated.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\theme\lib-commonjs\mergeThemes.js.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsNotepad_10.2102.13.0_x64__8wekyb3d8bbwe\Assets\NotepadAppList.targetsize-16_altform-lightunplated.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-commonjs\Separator.js.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-commonjs\ChoiceGroupOption.js.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.2104.12721.0_x64__8wekyb3d8bbwe\System.IO.FileSystem.dll.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\FeedbackHubAppList.targetsize-24_altform-lightunplated.png.tmp	BQT.exe
File created	C:\Program Files\WindowsPowerShell\Modules\PackageManagement\1.0.0.1\DSCResources\MSFT_PackageManagement\ja-JP\README_TO_DECRYPT.txt.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.BingNews_1.0.6.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-white\NewsAppList.targetsize-16_altform-lightunplated_contrast-white.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\OutlookMailBadge.scale-200.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.Getstarted_10.2.41172.0_x64__8wekyb3d8bbwe\Assets\TipsAppList.targetsize-256.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.2012.21.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-30_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.41182.0_x64__8wekyb3d8bbwe\Assets\contrast-black\MedTile.scale-125_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\js\nls\it-it\README_TO_DECRYPT.txt	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\KnownGameListRS3.bin.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.6.3102.0_x64__8wekyb3d8bbwe\Solitaire.exe.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\ThankYou\GenericEnglish-1.jpg.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.YourPhone_0.19051.7.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\AppTiles\contrast-black\StoreLogo.scale-125_contrast-black.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.40978.0_x64__8wekyb3d8bbwe\Assets\contrast-black\SplashScreen.scale-125_contrast-black.png.tmp	explorer.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\Localized_images\cs-cz\AppStore_icon.svg.tmp	explorer.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\HomeBanner-3x.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_1.0.36.0_x64__8wekyb3d8bbwe\Assets\AlarmsSplashScreen.scale-200.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.2103.1172.0_x64__8wekyb3d8bbwe\Assets\FeedbackHubAppList.targetsize-64_altform-unplated.png.tmp	BQT.exe
File created	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.12827.20400.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Advanced-Dark.scale-100.png.tmp	explorer.exe
File created	C:\Program Files\WindowsApps\MicrosoftWindows.Client.WebExperience_321.14700.0.9_x64__cw5n1h2txyewy\Dashboard\WebContent\node_modules\@fluentui\react\lib-commonjs\components\GroupedList\GroupSpacer.js.tmp	explorer.exe

Drops file in Windows directory 64 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework64\v3.5\SQL\it\DropSqlPersistenceProviderLogic.sql.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\SrpUxSnapIn\v4.0_10.0.0.0__31bf3856ad364e35\SrpUxSnapIn.dll.tmp	explorer.exe
File created	C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG\Browsers\xiino.browser.tmp	explorer.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Reflection.Primitives\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Reflection.Primitives.dll.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..riseneval.resources_31bf3856ad364e35_10.0.22000.493_fr-fr_6ae5200e47590455\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..essionaln.resources_31bf3856ad364e35_10.0.22000.493_ar-sa_e55bebf774992e03.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..essionaln.resources_31bf3856ad364e35_10.0.22000.493_sv-se_0c19ceee219be88b.manifest.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_32\Microsoft.GroupPolicy.AdmTmplEditor.Resources\v4.0_10.0.0.0_de_31bf3856ad364e35\README_TO_DECRYPT.txt	BQT.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Drawing.Design.resources\v4.0_4.0.0.0_it_b03f5f7f11d50a3a\System.Drawing.Design.resources.dll.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\it\mscorlib.Resources.dll.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..essionaln.resources_31bf3856ad364e35_10.0.22000.493_sv-se_9d2ca69b0934eddc.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Language.Basic~ne-np~1.0.mum.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..fessional.resources_31bf3856ad364e35_10.0.22000.493_sr-..-rs_e62ad3989a60224d.manifest.tmp	BQT.exe
File created	C:\Windows\rescache\_merged\902773873\1073745769.pri.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_en-us_ec3edbd1fc960555.manifest.tmp	explorer.exe
File created	C:\Windows\diagnostics\system\IEBrowseWeb\uk-UA\RS_ResetCacheSize.psd1.tmp	explorer.exe
File created	C:\Windows\rescache\_merged\721040260\1845226404.pri.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-lpksetup.resources_31bf3856ad364e35_10.0.22000.348_ar-sa_3cabe4f4afd47ef5\f\lpremove.exe.mui.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-lpksetup.resources_31bf3856ad364e35_10.0.22000.348_sr-..-rs_5eca2ed230a1b0ba\f\lpremove.exe.mui.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..yspecific.resources_31bf3856ad364e35_10.0.22000.493_en-us_f5aefb39bde4316f\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-m..nt-browser.appxmain_31bf3856ad364e35_10.0.22000.120_none_f759261c81fa2ed8\f\Square150x150Logo.contrast-white_scale-150.png.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-m..ditevtlog.resources_31bf3856ad364e35_10.0.22000.434_pt-pt_57e211b04b31ccd2\f\adtschema.dll.mui.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..terprises.resources_31bf3856ad364e35_10.0.22000.493_tr-tr_72a08fba9c97dde1.manifest.tmp	BQT.exe
File created	C:\Windows\diagnostics\system\Printer\fr-FR\DiagPackage.dll.mui.tmp	explorer.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Microsoft.Windows.Wifi.Client.Realtek.Rtwlane~~1.0.mum.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..ult-coren.resources_31bf3856ad364e35_10.0.22000.493_fr-ca_49dbb6431723b0be\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-lpksetup.resources_31bf3856ad364e35_10.0.22000.348_fr-ca_6c44a5a16ca87702.manifest.tmp	BQT.exe
File created	C:\Windows\schemas\Provisioning\provisioning_wwan_v1.xsd.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_lt-lt_62442cbe9e749768.manifest.tmp	BQT.exe
File created	C:\Windows\assembly\GAC_MSIL\Microsoft.PowerShell.ConsoleHost.Resources\1.0.0.0_es_31bf3856ad364e35\Microsoft.PowerShell.ConsoleHost.Resources.dll.tmp	BQT.exe
File created	C:\Windows\diagnostics\system\Networking\de-DE\DiagPackage.dll.mui.tmp	explorer.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\Microsoft.Workflow.Compiler\v4.0_4.0.0.0__31bf3856ad364e35\README_TO_DECRYPT.txt	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..oem-coren.resources_31bf3856ad364e35_10.0.22000.493_fi-fi_c8aaa82e6d0088ba.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..fessional.resources_31bf3856ad364e35_10.0.22000.493_hr-hr_416b5a9fb6b0f023.manifest.tmp	BQT.exe
File created	C:\Windows\rescache\_merged\425634766\363731306.pri.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..oem-coren.resources_31bf3856ad364e35_10.0.22000.493_pl-pl_290c927de5ea0ea6.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-m..oolsclient.appxmain_31bf3856ad364e35_10.0.22000.120_none_bb415867ae85d51c\f\watches.css.tmp	BQT.exe
File created	C:\Windows\INF\.NET Memory Cache 4.0\0407\netmemorycache_d.ini.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\Framework64\v4.0.30319\it\System.Reflection.Context.resources.dll.tmp	explorer.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Language.Handwriting~eu-es~1.0.mum.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_en-gb_e4b620b4016d5190\f\LanguagePackDiskCleanup.dll.mui.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-m..ditevtlog.resources_31bf3856ad364e35_10.0.22000.434_cs-cz_120dc063f81402f9\f\msaudite.dll.mui.tmp	BQT.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Language.Basic~gu-in~1.0.mum.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\Framework64\v2.0.50727\System.Drawing.dll.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-lsa.resources_31bf3856ad364e35_10.0.22000.434_zh-tw_e588e3e200600633\f\lsasrv.dll.mui.tmp	explorer.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.IO.FileSystem.DriveInfo\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.FileSystem.DriveInfo.dll.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..fessional.resources_31bf3856ad364e35_10.0.22000.493_ru-ru_386289858c547a68\f\license.rtf.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..fessional.resources_31bf3856ad364e35_10.0.22000.493_nl-nl_a84d632fc4577ac8.manifest.tmp	explorer.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skmanager.resources_31bf3856ad364e35_10.0.22000.120_zh-tw_4e21441725e17166\f\taskmgr.exe.mui.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_en-gb_e4b620b4016d5190.manifest.tmp	BQT.exe
File created	C:\Windows\rescache\_merged\425634766\363731306.pri.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\Framework\v4.0.30319\fr\System.Xaml.resources.dll.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skmanager.resources_31bf3856ad364e35_10.0.22000.120_da-dk_4482311e509a5a85.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_sr-..-rs_79bd822fb860ad3a.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..priseeval.resources_31bf3856ad364e35_10.0.22000.493_it-it_dd64685baa47c627\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..oem-coren.resources_31bf3856ad364e35_10.0.22000.493_fr-fr_cc4719806ab8acf2\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\Media\Windows Exclamation.wav.tmp	BQT.exe
File created	C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.resources\v4.0_4.0.0.0_es_b77a5c561934e089\README_TO_DECRYPT.txt	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..essionaln.resources_31bf3856ad364e35_10.0.22000.493_th-th_4236c84dfa79ab1d\f\license.rtf.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..erprisesn.resources_31bf3856ad364e35_10.0.22000.493_nl-nl_30911746ea83798e.manifest.tmp	explorer.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Language.Fonts.Jpan~und-Jpan~1.0.mum.tmp	explorer.exe
File created	C:\Windows\servicing\InboxFodMetadataCache\metadata\Language.Handwriting~gd-gb~1.0.mum.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-l..skcleanup.resources_31bf3856ad364e35_10.0.22000.348_ko-kr_be7900bdac4ccbcb.manifest.tmp	BQT.exe
File created	C:\Windows\servicing\LCU\Package_for_RollupFix~31bf3856ad364e35~amd64~~22000.493.1.3\amd64_microsoft-windows-lsa-minwin_31bf3856ad364e35_10.0.22000.434_none_38ca096a17805fa9\f\ksecdd.sys.tmp	explorer.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
1356	vssadmin.exe

Modifies registry class 20 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock	BQT.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock\ = "BQTLock.File.bqtlock"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock\ = "BQTLock.File.bqtlock"	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon\ = "C:\\Windows\\explorer.exe,0"	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\BQT.exe,0"	BQT.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\Local Settings	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon	BQT.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock\ = "BQTLock.File.bqtlock"	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock\ = "BQTLock.File.bqtlock"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\Local Settings	explorer.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\BQT.exe,0"	BQT.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\.bqtlock	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon	BQT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-903960561-1545645218-4290906778-1000_Classes\BQTLock.File.bqtlock\DefaultIcon\ = "C:\\Windows\\explorer.exe,0"	explorer.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
988	NOTEPAD.EXE

Scheduled Task/Job: Scheduled Task 1 TTPs 4 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5848	schtasks.exe
1408	schtasks.exe
5612	schtasks.exe
2168	schtasks.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1552	BQT.exe
1552	BQT.exe
1552	BQT.exe
1552	BQT.exe
4236	explorer.exe
4236	explorer.exe
6028	BQT.exe
6028	BQT.exe
4236	explorer.exe
4236	explorer.exe
6028	BQT.exe
6028	BQT.exe
6076	explorer.exe
6076	explorer.exe
6076	explorer.exe
6076	explorer.exe

Suspicious use of WriteProcessMemory 62 IoCs

description	pid	Process	procid_target
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 4236	1552	BQT.exe	79
PID 1552 wrote to memory of 5848	1552	BQT.exe	80
PID 1552 wrote to memory of 5848	1552	BQT.exe	80
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 4372	4236	explorer.exe	85
PID 4236 wrote to memory of 1408	4236	explorer.exe	86
PID 4236 wrote to memory of 1408	4236	explorer.exe	86
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 6076	6028	BQT.exe	89
PID 6028 wrote to memory of 5612	6028	BQT.exe	90
PID 6028 wrote to memory of 5612	6028	BQT.exe	90
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 1796	6076	explorer.exe	95
PID 6076 wrote to memory of 2168	6076	explorer.exe	96
PID 6076 wrote to memory of 2168	6076	explorer.exe	96

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\BQT.exe
"C:\Users\Admin\AppData\Local\Temp\BQT.exe"
1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1552
- C:\Windows\explorer.exe
  explorer.exe
  2⤵
  - Enumerates connected drives
  - Sets desktop wallpaper using registry
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4236
- - C:\Windows\explorer.exe
    explorer.exe
    3⤵
    - Modifies registry class
    PID:4372
- - C:\Windows\SYSTEM32\schtasks.exe
    schtasks /create /tn "BQTLock_Startup_2468" /tr "C:\Windows\explorer.exe" /sc ONLOGON /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1408
- C:\Windows\SYSTEM32\schtasks.exe
  schtasks /create /tn "BQTLock_Startup_171" /tr "C:\Users\Admin\AppData\Local\Temp\BQT.exe" /sc ONLOGON /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5848

C:\Users\Admin\AppData\Local\Temp\BQT.exe
C:\Users\Admin\AppData\Local\Temp\BQT.exe
1⤵
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:6028
- C:\Windows\explorer.exe
  explorer.exe
  2⤵
  - Enumerates connected drives
  - Sets desktop wallpaper using registry
  - Suspicious use of SetThreadContext
  - Drops file in Program Files directory
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:6076
- - C:\Windows\explorer.exe
    explorer.exe
    3⤵
    - Modifies registry class
    PID:1796
- - C:\Windows\system32\schtasks.exe
    schtasks /create /tn "BQTLock_Startup_2421" /tr "C:\Windows\explorer.exe" /sc ONLOGON /rl HIGHEST /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2168
- - C:\Windows\system32\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\README_TO_DECRYPT.txt
    3⤵
    - Opens file in notepad (likely ransom note)
    PID:988
- - C:\Windows\system32\vssadmin.exe
    vssadmin Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1356
- C:\Windows\system32\schtasks.exe
  schtasks /create /tn "BQTLock_Startup_4937" /tr "C:\Users\Admin\AppData\Local\Temp\BQT.exe" /sc ONLOGON /rl HIGHEST /f
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5612

C:\Windows\explorer.exe
C:\Windows\explorer.exe
1⤵
- Modifies registry class
PID:3136

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
PID:1876

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Windows Management Instrumentation

T1047

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

README_TO_DECRYPT.txt

Path C:\Program Files\Common Files\System\ado\de-DE\README_TO_DECRYPT.txt
Size 504B
SHA256 082ec689e3ac84a65a25608549d6d3bcfb7e2903a452c5bd9b62448b2913b3ad
MD5 702d45ac545e297f3610b197851ed3f1
SHA1 f5ed83fb88f778696c8e20596d314057e051e5ac
SHA512 869f50f2062a5bcf783ebe2c409a1497b2d7b1541f2fa6c0824ec34411563af128b534e5f215d44a8d39c26503ab0e0640a179294e71988ea468cc864b5babcd
MD5 SHA1 SHA512

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223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
Size 2KB
SHA256 884823eb7c61d095d55ce13b4ee2fb6daf472b1a428767c57b382d8729606795
MD5 29d6b5a79896a6abb1b9b16e8a3e8d33
SHA1 2cc2e2751c81963762248d99585ea9d50a93a03e
SHA512 3f515780af345ea903bb700656647fc418cfd0aef6ec067f4a067252487951a51773e384fe1b936b772bdfc84743e96f5dcee5fb904c59f746a46181b198f777
MD5 SHA1 SHA512

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713811D2238C8AB918B50575FFB56A72_F9972101636978F27335334F5C359266

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\713811D2238C8AB918B50575FFB56A72_F9972101636978F27335334F5C359266
Size 281B
SHA256 f55cfae79f693ab7353a8179c1ee91ed2d908f08c14abe04b8068f01691ff6f8
MD5 6f79e31b5fe86f4fa4f1ba07e0f2cb7b
SHA1 78b54da6d0056b4b6d291cd9e31006b6e58d0072
SHA512 03751d1e344f2182b1cd024c8ef25ad3653b5174bc484a24f1e87da1206019b6e672a66c111d112ad6e82007ef56fddf194ab437907033255ba22910f4a557f6
MD5 SHA1 SHA512

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8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 1KB
SHA256 0f71708dbfee304a55c01245e2e13067d295d1bcbecc1089d2077aacba83fd5a
MD5 c0e5238609191cf60f46d128feef9bf4
SHA1 6235d7587497eb5edd383f2d5ba6ccbff838b4e3
SHA512 ccb516f6c8482e6426fc5ded5e72e6890769edd929f49b31414b8bcb6453c363dab9d5afc2e99e485f12f45453171a5a849e46037d6a297bf6d1de372781b739
MD5 SHA1 SHA512

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ACA7D89F79C6EF86F63EB2FF5D5C876A_8AD14988285EE6F6CBBCCEE3BD7C8E58

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\ACA7D89F79C6EF86F63EB2FF5D5C876A_8AD14988285EE6F6CBBCCEE3BD7C8E58
Size 2KB
SHA256 50a020ca3f7c537dd5f9826183c1381b6441e2f70f747842068775d454fb6969
MD5 2cfc73d3d197883f1f34be4152b2ff6c
SHA1 584ad0360ca00ae81705f26eac26ce38bd2c7181
SHA512 f6ff8600d5947ff671a128124ee5e4ab626195cd124a6bd1c76f27ab6308267525421d18f4900c2e09a7268c629a0f57e999896ab72dd34958906548389f7531
MD5 SHA1 SHA512

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
Size 530B
SHA256 6fb1b8e593cb0388f67ead35313a230f524657317ea86271b3a97362e5ec6ad9
MD5 1fbb37f79b317a9a248e7c4ce4f5bac5
SHA1 0ff4d709ebf17be0c28e66dc8bf74672ca28362a
SHA512 287e1d62c9ceb660965c266f677c467fbb997c2f5dcd1d63e185e266488aafc3489ac1d3feec81d10f01ce4a72e61a8bc4e124f137ce8675a220aa7797002e74
MD5 SHA1 SHA512

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EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
Size 1KB
SHA256 678a6e8f9407706296a60a0c68d548244d33c4dcdf34edc5c1d8be18ff7b6bee
MD5 9d45beb371a6e14038a35e3ffcc946fb
SHA1 4e36a056891f898cd22f4bdb80366e7ebbe3eb2e
SHA512 d8d38dc8bd1a163ce90f4e33b745e1e37ab589922777aa2b497f92b934e4489e00fac1c1b669d6331907a31efb6cecf6e641158707b93f8a15f6c6b6922c96f1
MD5 SHA1 SHA512

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223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
Size 450B
SHA256 4619f8502c619d7ab359fd7c68ecf3251a1583d1aaa6d3d2582c44fe28e785a3
MD5 2a7ab79f04c4d51180220dd55e2bb457
SHA1 14240f14f91001d80fe29abdcd7dd14b0fb4ea26
SHA512 498304ff08faf9ec2c3e22979f6d72fb50be01dc152704e4776e750fa0024b8801148c05ab1916f0a887b48af4ce55bdc83c82f1cb0bfb443acd4f627498ace5
MD5 SHA1 SHA512

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713811D2238C8AB918B50575FFB56A72_F9972101636978F27335334F5C359266

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\713811D2238C8AB918B50575FFB56A72_F9972101636978F27335334F5C359266
Size 414B
SHA256 e7566e2f2fe0c593115a1733b61c7d7d9e2a5d7736d3408a08e20552cec1a097
MD5 da2e3a0edc92ffa0a320f2b9e7b959e1
SHA1 d2be1c426717bfd46b31d0b2050dced0b12b1792
SHA512 f6490b0bb13fb149eb758d9ce4b230e7ee9edcfdaf35d26cbcde0380100be4952b2c792728f5c50c172e5e0f345d1cad11567bb7778ebda81810d3a9520f8232
MD5 SHA1 SHA512

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8B2B9A00839EED1DFDCCC3BFC2F5DF12

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
Size 174B
SHA256 de61b77427ced8cf3869af32997a307e697c39d9e8e71734a3c2b74ab6c995e2
MD5 78e2e70728eff0a716bbeea617eba36c
SHA1 8404d7022325ef4e7f91e7dceeeea54844e153c7
SHA512 6b3458e88211c0815fe61cfda1ba097457701138b39d82d32212db05a9225acf24b0ab4e9634b8e6995dc1c5e7f2393bdc3ac5444d2385485b3f3a87d2bb8b9d
MD5 SHA1 SHA512

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ACA7D89F79C6EF86F63EB2FF5D5C876A_8AD14988285EE6F6CBBCCEE3BD7C8E58

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\ACA7D89F79C6EF86F63EB2FF5D5C876A_8AD14988285EE6F6CBBCCEE3BD7C8E58
Size 458B
SHA256 f65e62999474ae52fb9f086beb73bf9470ef15df3bf975809d6048e7936b8b14
MD5 fb0ff1bda02ddabd8d98dadb64e7a260
SHA1 89bb1deea8a2f28e60b100339d2a3a1a3bbfd76f
SHA512 68389f6b25eeda76bab048bce2fa519333843e35fbcc1ed67e9ae223b0ae1bc59abba9efdb68c4510afdfc6fd4187877f0017d911c6e33d06a7eda4a72d70e4f
MD5 SHA1 SHA512

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B46811C17859FFB409CF0E904A4AA8F8

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
Size 170B
SHA256 24c7d1ea534a383045263bb5ed609508b15477f84b5dc3e6ef501fc0a427c5af
MD5 789fdd46b83cc86d5f0023fba982a821
SHA1 25dd97fda2c25cbc8fb6b33f20021ee896111a48
SHA512 ffbd587d1df2cb2c7972048b6b5d7a5013863cfe7962fceaca55a125739c620e81e7b63c93fcf399b6ade3b8fc14ac9b889f7a355d3e02bdd76f086ce2d41b50
MD5 SHA1 SHA512

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EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\EB2C4AB8B68FFA4B7733A9139239A396_D76DB901EE986B889F30D8CC06229E2D
Size 458B
SHA256 bd85b25dc5f7c3ee58dd190776796bf7e1efd5701201f2ed9a22cf95e219306f
MD5 64fe5cf1b5af6c95a5229426d1f52f9b
SHA1 1487925df30623721d34ebef5e72d7a6a42965cf
SHA512 9d0c715fa03c719cf8477d6a751e787436d89bb97a83301743495c59af42bbc9cde260586f104e00f66510a72a7fe87b77d6e9c26c91b449aa515996580e9ba8
MD5 SHA1 SHA512

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bqt_passwords.txt

Path C:\Windows\Temp\bqt_passwords.txt
Size 79B
SHA256 7306e2161452389767a4397faa8f17be391299c4a00c2793d37dd7ee0f40819b
MD5 6c9a359586638b9d9dba93f27aae8d8a
SHA1 75a00812335a1942ff2bcfbd1caf72716d99d9c1
SHA512 62c30b7cf91efd6e1397e7026f772a889c9b72abb32c504b9c64b8f39340332703994b536612f1398020fa80e3fd8f2463c8ea1ac0988656aa265fc3c7078b66
MD5 SHA1 SHA512

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bqt_wallpaper.bmp

Path C:\Windows\Temp\bqt_wallpaper.bmp
Size 139KB
SHA256 d3b6b25f5e5f5873bc7cf3bcfead69d0874ef449af421c876cb9a375512f40d9
MD5 8fcaffa27221e3fcefbf770fc59e9f98
SHA1 e47608fc7ed36a007c94629a684b8cf6e157fa20
SHA512 8689e626ff26ea3afbe52b9b762ed294e480225f571fdfd7a47839663cf628b7bb31ef579ea5c2cfa0aed821f470efa934c1893c7348211ca6f2bb81c71ea935
SSDEEP 3072:cMsbdluVGWPrpTYNeUvGdlYgAs+DShSy0AyO5ZB0iFjUPdzs:6uVbTmRAegC45r5Z+Oj+dzs
MD5 SHA1 SHA512 SSDEEP

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memory/1552-10258-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/1552-1437-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/1552-5018-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/1552-13572-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/1796-3755-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/1796-2893-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/1796-2685-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/1796-2763-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4236-2089-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-33-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-25-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-13588-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-11497-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-40-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4236-6263-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/4372-352-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4372-359-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4372-354-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4372-358-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4372-364-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/4372-360-0x00007FF6B5550000-0x00007FF6B5A14000-memory.dmp

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memory/6028-6987-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/6028-2837-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/6028-12054-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/6028-13333-0x00007FF7E33E0000-0x00007FF7E3C62000-memory.dmp

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memory/6076-13362-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-3611-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-9103-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-17214-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-20034-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-26814-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-33730-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-42741-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-49743-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-55778-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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memory/6076-57086-0x00007FF6B5550000-0x00007FF6B5DD2000-memory.dmp

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