Analysis
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max time kernel
202s -
max time network
262s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
14-05-2024 04:59
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
5942143614d8ed34567ea472c2b819777edd25c00b3e1b13b1ae98d7f9e28d43.dll
Resource
win7-20240508-en
windows7-x64
2 signatures
300 seconds
Behavioral task
behavioral2
Sample
5942143614d8ed34567ea472c2b819777edd25c00b3e1b13b1ae98d7f9e28d43.dll
Resource
win10-20240404-en
windows10-1703-x64
7 signatures
300 seconds
General
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Target
5942143614d8ed34567ea472c2b819777edd25c00b3e1b13b1ae98d7f9e28d43.dll
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Size
1.0MB
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MD5
2b7fc9dd400d92cc64627115b47a592f
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SHA1
7131a6f16aa8534a9cec7e11e37423aea4c09784
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SHA256
5942143614d8ed34567ea472c2b819777edd25c00b3e1b13b1ae98d7f9e28d43
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SHA512
50a8c9f9b0daa160d3ab7eb49212a53db7c4aa1aa02c7a408ffc2254c02635be9c52c815567e9020beb4eb3a9d6aaa919c70f87d01fc6df55b0e4785b21d28b8
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SSDEEP
24576:9gV5fnVwQncvBPaMQguPhZDrBvyTagWIO:9g3VwkYaM0PvfBqugx
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://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion/
Login ID: 21b9379f-9f5c-4dda-87c4-19bee5fef2ae
*!* 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://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.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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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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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\Microsoft Office\root\Licenses16\HomeStudent2019R_Grace-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\images\7989_20x20x32.png rundll32.exe File created C:\Program Files (x86)\Common Files\System\fr-FR\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-white_scale-80.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\contrast-white\HxA-Outlook.scale-150.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\Assets\AppTiles\contrast-black\Weather_LogoSmall.targetsize-24.png rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\unified-share\images\themes\dark\Info2x.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\7656_40x40x32.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\7813_40x40x32.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1612.10312.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-20_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.16112.11601.0_x64__8wekyb3d8bbwe\Assets\contrast-black\AppList.targetsize-96_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\legal\jdk\colorimaging.md rundll32.exe File opened for modification C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.WindowsStore_11701.1001.87.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\OFFICE16\api-ms-win-crt-math-l1-1-0.dll rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\on-boarding\images\themeless\zh-tw_get.svg rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Layout.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_x64__8wekyb3d8bbwe\Content\mobile\en-GB\doc_offline_getconnected.xml rundll32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft SQL Server\130\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_4.5.6.0_neutral_split.scale-200_8wekyb3d8bbwe\Assets\GetStartedLargeTile.scale-200_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\6449_72x72x32.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\69_20x20x32.png rundll32.exe File created C:\Program Files\VideoLAN\VLC\locale\hu\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2017.125.40.0_x64__8wekyb3d8bbwe\Assets\WindowsIcons\WindowsCameraAppList.targetsize-64.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_x64__8wekyb3d8bbwe\Assets\SecondaryTiles\Collections\contrast-black\SmallTile.scale-200_contrast-black.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\1033\BHOINTL.DLL rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ClientConfiguration.dll rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\my-computer-select\js\nls\eu-es\ui-strings.js rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.BingWeather_4.18.56.0_x64__8wekyb3d8bbwe\Assets\AppTiles\WeatherIcons\30x30\202.png rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.15.2003.0_x64__8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial4-pl.xrm-ms rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_OEM_Perp-ul-phn.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.10252.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AppPackageStoreLogo.scale-100.png rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\plugins\stream_out\libstream_out_description_plugin.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Themes\Beach\beach_1s.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Flags\large\am_60x42.png rundll32.exe File created C:\Program Files (x86)\Internet Explorer\it-IT\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_17.7668.58071.0_x64__8wekyb3d8bbwe\animations\OneNoteFRE_SaveAutomatically_RTL_Tablet.mp4 rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.OneConnect_2.1701.277.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\OneConnectSplashScreen.scale-125.png rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\msvcp140.dll rundll32.exe File created C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000050\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\RTL\WideTile.scale-100.png rundll32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\createpdfupsell-app\js\nls\he-il\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Windows Defender\MsMpEng.exe rundll32.exe File opened for modification C:\Program Files\Windows NT\Accessories\en-US\wordpad.exe.mui rundll32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\send-for-sign\images\cloud_secured.png rundll32.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\tracked-send\images\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_Grace-ppd.xrm-ms rundll32.exe File opened for modification C:\Program Files\Java\jdk-1.8\jre\lib\plugin.jar rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-140.png rundll32.exe File created C:\Program Files\VideoLAN\VLC\locale\am\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_3.14.1181.0_x64__8wekyb3d8bbwe\Assets\Awards\klondike\Blizzard-of_Bliss_Unearned_small.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\LibCurl64.DllA\OpenSSL64.DllA\zlibwapi.dll rundll32.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\images\themes\dark\s_filter-hover_32.svg 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\WindowsApps\microsoft.windowscommunicationsapps_17.7906.42257.0_x64__8wekyb3d8bbwe\images\1113_20x20x32.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_17.8010.5926.0_x64__8wekyb3d8bbwe\VFS\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\Mso98win32client.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_11.8.204.0_x64__kzf8qxf38zg5c\SkypeApp\Designs\Emoticons\large\smirk.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Home\contrast-white\WideTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsPowerShell\Modules\Pester\3.4.0\Pester.nuspec rundll32.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1611.10393.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\SecondaryTiles\Directions\Place\LTR\contrast-white\WideTile.scale-125.png rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-ul-oob.xrm-ms rundll32.exe -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.5n0hklvqf\DefaultIcon rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.5n0hklvqf rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.5n0hklvqf\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" rundll32.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 5940 notepad.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 5080 wrote to memory of 6016 5080 rundll32.exe 74 PID 5080 wrote to memory of 6016 5080 rundll32.exe 74 PID 6016 wrote to memory of 5940 6016 cmd.exe 76 PID 6016 wrote to memory of 5940 6016 cmd.exe 76
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5942143614d8ed34567ea472c2b819777edd25c00b3e1b13b1ae98d7f9e28d43.dll,#11⤵
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5080 -
C:\Windows\system32\cmd.execmd.exe /c start /MAX notepad.exe c:\instructions_read_me.txt2⤵
- Suspicious use of WriteProcessMemory
PID:6016 -
C:\Windows\system32\notepad.exenotepad.exe c:\instructions_read_me.txt3⤵
- Opens file in notepad (likely ransom note)
PID:5940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5ffab6a010fa0bc17c0bdcda4a0891a63
SHA110c791332e829c8109ebe5b42a72d0bb248e27b4
SHA256d0f3fcaa5904dd619110b66fad01902b1cd125cab6ad9a001c402872209d29c0
SHA51231dcb7f78b681e1e68069aa9bb3de8e4b946c512984606354b390047145e45c9a4cda4f042a23e1bd235d8d915ca14033522aa4fe510918a8af4620ee98ee696