Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
18-12-2024 11:35
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84.bin.dll
Resource
win7-20240729-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84.bin.dll
Resource
win10v2004-20241007-en
windows10-2004-x64
7 signatures
150 seconds
General
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Target
5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84.bin.dll
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Size
828KB
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MD5
c6fc90e5ff451a319ca1cb857ffd3800
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SHA1
21912a61a881ab758f2e176f93ab64ca446951ca
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SHA256
5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84
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SHA512
8a79174ca59a8c53d6f5e820f068abb9e2afa24c1f47ac46fc5325a9b612e1365711373eb34fe55141cc65adc560712296b03facc6cf2d6408059d28e6e6f5f3
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SSDEEP
12288:4FTfM3+OeO+OeNhBBhhBBd1hzUGvXWoCwUA39w0b6lSydVuYMuOBb70BszJo1Wbz:41f71VXUA39w0b4SydVVGkUJo4OnLs
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: 3b08e21a-8245-485a-85e4-9130f3fa94fd
*!* 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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Renames multiple (3984) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Java\jre-1.8\lib\deploy\messages_ko.properties rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipscsy.xml rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Retail-pl.xrm-ms rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ul-phn.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-24.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Xml.ReaderWriter.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\AppPackageStoreLogo.scale-400.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailAppList.targetsize-40_altform-lightunplated.png rundll32.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ja-JP\tabskb.dll.mui rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Collections.Specialized.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_2019.19071.19011.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files (x86)\Windows Defender\es-ES\MpAsDesc.dll.mui rundll32.exe File opened for modification C:\Program Files (x86)\Windows Photo Viewer\en-US\PhotoAcq.dll.mui rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosAppList.targetsize-256_altform-colorize.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-20_contrast-white.png rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.IsolatedStorage.dll rundll32.exe File created C:\Program Files (x86)\Common Files\Adobe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLPROXY.DLL rundll32.exe File opened for modification C:\Program Files (x86)\Common Files\System\Ole DB\sqlxmlx.rll rundll32.exe File created C:\Program Files\Common Files\microsoft shared\ink\pt-PT\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PenImc_cor3.dll 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\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\Mira.Core.Engine.UWP.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Trial-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\WideTile.scale-100.png rundll32.exe File opened for modification C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubSplashWideTile.scale-100_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubLargeTile.scale-200.png rundll32.exe File opened for modification C:\Program Files\Internet Explorer\IEShims.dll rundll32.exe File opened for modification C:\Program Files\dotnet\swidtag\Microsoft Windows Desktop Runtime - 8.0.2 (x64).swidtag rundll32.exe File opened for modification C:\Program Files (x86)\Windows Photo Viewer\ja-JP\PhotoAcq.dll.mui rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\Square44x44Logo.scale-125.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-40.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-96_altform-unplated.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-256_altform-lightunplated.png rundll32.exe File created C:\Program Files\Common Files\microsoft shared\ink\et-EE\instructions_read_me.txt rundll32.exe File created C:\Program Files\Common Files\System\Ole DB\it-IT\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Microsoft.WindowsDesktop.App.deps.json rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Private.Uri.dll rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\bg3_thumb.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-80_altform-unplated.png rundll32.exe File created C:\Program Files\Java\jre-1.8\lib\deploy\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00.UWPDesktop_14.0.27629.0_x64__8wekyb3d8bbwe\vcamp140.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\3039_20x20x32.png rundll32.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\msedgeupdateres_mr.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-125_8wekyb3d8bbwe\Assets\Logo.scale-125_contrast-white.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubGameBar.png rundll32.exe File created C:\Program Files (x86)\Common Files\Microsoft Shared\MSInfo\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\SharedMemoryUWP.dll rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTrial-ul-oob.xrm-ms rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-60_altform-unplated_contrast-black.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Win10\SplashScreen.scale-100.png rundll32.exe File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ObjectModel.dll rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-200_8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Generic.xbf rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-pl.xrm-ms rundll32.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PEOPLEDATAHANDLER.DLL rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\LargeTile.scale-400.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Assets\PhotosWideTile.contrast-black_scale-200.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-24_altform-unplated.png rundll32.exe File created C:\Program Files\Java\jdk-1.8\legal\jdk\instructions_read_me.txt 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\.yoqrb2bl7\DefaultIcon rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.yoqrb2bl7 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.yoqrb2bl7\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3204 wrote to memory of 3096 3204 rundll32.exe 82 PID 3204 wrote to memory of 3096 3204 rundll32.exe 82 PID 3204 wrote to memory of 3096 3204 rundll32.exe 82
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84.bin.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3204 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\5549e8943fcb60643dc032765675bc486cb7f2f2603d8399ae3946df08b0be84.bin.dll,#12⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:3096
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD560a9017d07b662e876817b4354b4b868
SHA1fe12d1c82ee95bfe748a4e1cc49c1f88b0da7897
SHA256003c55f04cd939f1f229c2d1f5e81f55a0f06a6d5f96acdf10a16ec9de04cc19
SHA512375848fed7ade869e5a02ef96ac846dc75a6f4a4ec07158d339f6d035c417bf3e620fc22182d55491a2ea6e865cb71cc4ef01fc91902bbad4ce0e1acf14dfa90