Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system -
submitted
05-02-2025 16:58
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
file.dll
Resource
win7-20240903-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.dll
Resource
win10v2004-20250129-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
file.dll
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Size
800KB
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MD5
f74cec233a9609461e7518dd4c90207b
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SHA1
92408a8233567f8b10f30f83dfcdd98effe96dca
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SHA256
05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431
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SHA512
231a0fd347933b31bbfbebebd274c4da40177360f35f295e5fa8384ad30ad11666221c39be28e56866e4b7254f9cbe3956368352ea7f4fe48e89427df7a6bcb4
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SSDEEP
12288:z0LOFSM++OeO+OeNhBBhhBBhlJ2//R18nBIs0I3sHGzVylK7Nb0tq0mxHu84NeiB:zGOFSmKqEI3sHGzVylK7Nb0U1Hu8WK
Score
10/10
Malware Config
Extracted
Path
C:\Program Files (x86)\instructions_read_me.txt
Family
blackbasta
Ransom Note
ATTENTION!
Your network has been breached and all data was encrypted. Please contact us at:
https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/
Login ID: ab2bada7-004d-468c-8c25-a08517ea2fa0
*!* To access .onion websites download and install Tor Browser at:
https://www.torproject.org/ (Tor Browser is not related to us)
*!* To restore all your PCs and get your network working again, follow these instructions:
- Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. It doesn't matter, who are trying to do this, either it will be your IT guys or a recovery agency.
Please follow these simple rules to avoid data corruption:
- Do not modify, rename or delete files. Any attempts to modify, decrypt or rename the files will lead to its fatal corruption.
- Do not hire a recovery company. They can't decrypt without the key.
They also don't care about your business. They believe that they are
good negotiators, but it is not. They usually fail. So speak for yourself.
Waiting you in a chat.
URLs
https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/
Signatures
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Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
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Blackbasta family
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Drops desktop.ini file(s) 1 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI rundll32.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\contrast-white\OneNoteNotebookMedTile.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-80.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\BCSRuntimeRes.dll rundll32.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\en-US\sqloledb.rll.mui rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\legal\jdk\dom.md rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\contrast-white\MedTile.scale-100_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraMedTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Forms.resources.dll rundll32.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\jfr\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-40_altform-lightunplated.png rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-process-l1-1-0.dll rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-sysinfo-l1-1-0.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\xboxservices.config rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-ppd.xrm-ms rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\System.Windows.Controls.Ribbon.resources.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.Interfaces.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-pl.xrm-ms rundll32.exe File opened for modification C:\Program Files\Mozilla Firefox\defaults\pref\channel-prefs.js rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_MAK-pl.xrm-ms rundll32.exe File created C:\Program Files\VideoLAN\VLC\locale\ps\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\contrast-black\WideTile.scale-150_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxMailLargeTile.scale-400.png rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\legal\javafx\glib.md rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Configuration\card_security_terms_dict.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.contrast-white_targetsize-72.png rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encoding.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-pl.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\Assets\contrast-white\PeopleAppList.targetsize-40_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-48_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files (x86)\Windows Defender\uk-UA\EppManifest.dll.mui rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Microsoft.Xbox.SmartGlass.Controls\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\lib\deploy\splash_11-lic.gif rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroSup64.dll rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\plugins\codec\libqsv_plugin.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\OneNoteAppContracts.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-16.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.contrast-black_targetsize-24.png rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\bin\policytool.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\MedTile.scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\Assets\Audio\Skype_Dtmf_7.m4a rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\bwcapitalized.dotx rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\StreamServer.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019VL_MAK_AE-ppd.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Exchange.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\Microsoft.UI.Xaml\Assets\NoiseAsset_256X256_PNG.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_x64__8wekyb3d8bbwe\images\PaySquare44x44Logo.targetsize-24_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosMedTile.scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\contrast-white\AppList.targetsize-72_altform-unplated_contrast-white.png rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_neutral_~_8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RCom.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Templates\1033\Blog.dotx rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\Microsoft.People.Relevance.winmd rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\VCCORLIB140_APP.DLL rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Helper.winmd rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationClientSideProviders.resources.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Assets\Icons.ttf rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.DataAnnotations.dll rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-process-l1-1-0.dll rundll32.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\ink\de-DE\InkObj.dll.mui rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-80_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteNotebookMedTile.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_x64__8wekyb3d8bbwe\Assets\AppTiles\Weather_LogoSmall.scale-200.png rundll32.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb\DefaultIcon rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2336 wrote to memory of 2084 2336 rundll32.exe 83 PID 2336 wrote to memory of 2084 2336 rundll32.exe 83 PID 2336 wrote to memory of 2084 2336 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:2336 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\file.dll,#12⤵
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:2084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5a1858e97c794b6dd91c84c4117972a63
SHA1e0166104ea97fc4dd52349113ac1eb2047b237e5
SHA256bb3b4e779a5f43494e237b1979f0eddc9beb0a2a7c1e0b451a32c77795f1a58e
SHA512da4a96ba2e3078b14784496af289097a8a0d21bc8486627c932c48bacc9e05d3837c671526f0f1d3f679c14e4a2bc1fd6b3a3196233e5fb194a7e2a8a029c9e1