Analysis
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max time kernel
13s -
max time network
4s -
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 11:57
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e.bin.dll
Resource
win7-20240903-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e.bin.dll
Resource
win10v2004-20241007-en
windows10-2004-x64
8 signatures
150 seconds
General
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Target
645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e.bin.dll
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Size
827KB
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MD5
da7e741665f826e9fac561410ab75244
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SHA1
1a81649e218cc9fc1033573c3c4dbd27a6eb36fb
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SHA256
645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e
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SHA512
f91c7711dbc394d0e42ba50528d098ec58b2aac5e72a044fea75b4e082e49aca3c5ef9fea086a3dc96136e1a531de7c124998c9f1e17efae0e51e165fc909cd2
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SSDEEP
12288:VETfM3+OeO+OeNhBBhhBBd1hzUGvXWoCwUA39w0b6lSydVuYMuOBb70BszJo1WTM:VKf71VXUA39w0b4SydVVGkUJo4fvLs
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: 66a531a8-86fe-42cf-8a02-0d7e139cfbe2
*!* 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 (314) 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\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-125_8wekyb3d8bbwe\resources.pri rundll32.exe File opened for modification C:\Program Files\Windows Media Player\Media Renderer\DMR_120.jpg rundll32.exe File opened for modification C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\Microsoft.mshtml.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.NET.Native.Framework.1.7_1.7.25531.0_x64__8wekyb3d8bbwe\logo.png rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.IO.dll rundll32.exe File opened for modification C:\Program Files\7-Zip\7z.dll rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.Advertising.Xaml_10.1808.3.0_x64__8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\ClientTelemetry.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\XboxNano.winmd rundll32.exe File opened for modification C:\Program Files\Mozilla Firefox\crashreporter.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_2019.19071.19011.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\Microsoft.Support.SDK.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_2019.807.41.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\Windows Defender\it-IT\ProtectionManagement.dll.mui rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\Mozilla Firefox\AccessibleMarshal.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Reflection.TypeExtensions.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Services.Store.Engagement_10.0.18101.0_x86__8wekyb3d8bbwe\Microsoft.Services.Store.Engagement.Proxies.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteshare.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\Windows Defender\it-IT\MpEvMsg.dll.mui rundll32.exe File opened for modification C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\7-Zip\Lang\fy.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Microsoft.RichMedia.Ink.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\Internet Explorer\hmmapi.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\msapp-error.css rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\clrcompression.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_2019.904.1644.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files (x86)\Windows Media Player\fr-FR\wmlaunch.exe.mui rundll32.exe File opened for modification C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME.txt rundll32.exe File opened for modification C:\Program Files\Windows Media Player\es-ES\wmlaunch.exe.mui rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_neutral_split.scale-200_8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\Microsoft.Notes.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal_CustomCapability.sccd rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGameOverlay_1.46.11001.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxManifest.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_x64__8wekyb3d8bbwe\SpeechToTextOverlay64-Retail.exe rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\README.txt 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\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\BuildInfo.xml rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File opened for modification C:\Program Files\Internet Explorer\sqmapi.dll rundll32.exe File opened for modification C:\Program Files (x86)\Windows Media Player\de-DE\wmpnssci.dll.mui rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\New_Skins.url rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.IO.UnmanagedMemoryStream.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxSignature.p7x rundll32.exe File opened for modification C:\Program Files (x86)\Windows Media Player\uk-UA\setup_wm.exe.mui rundll32.exe File opened for modification C:\Program Files\Mozilla Firefox\minidump-analyzer.exe rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\clrjit.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\Configuration.winmd rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\StoreExperienceHost.dll rundll32.exe File created C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_neutral_split.scale-100_8wekyb3d8bbwe\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Microsoft.IoT.Cortana.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml rundll32.exe File created C:\Program Files (x86)\Windows Defender\uk-UA\instructions_read_me.txt rundll32.exe File opened for modification C:\Program Files\VideoLAN\VLC\libvlccore.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\mso50imm.dll rundll32.exe File opened for modification C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxBlockMap.xml 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\.nq89aprn6\DefaultIcon rundll32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.nq89aprn6 rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.nq89aprn6\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" rundll32.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 5060 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3512 wrote to memory of 3612 3512 rundll32.exe 83 PID 3512 wrote to memory of 3612 3512 rundll32.exe 83 PID 3512 wrote to memory of 3612 3512 rundll32.exe 83
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e.bin.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3512 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\645a18f737bd6d810a48c4a47ace62c196eb1ef285f8ca9bea6218b312fff16e.bin.dll,#12⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:3612
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\instructions_read_me.txt1⤵
- Opens file in notepad (likely ransom note)
PID:5060
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD57e86c63b12f6533d95a2c277fd8b2efe
SHA1a9ae78fb3582165036ec4154eb99fd8497e2c156
SHA2562641dc9c905edd249799f902ef37661d4e105fc38a0767f896fbe6485839a088
SHA51294f11db7436a73f5db4882120dce00851810fb53cff8d496c6c4875516df7663e73a5c50fbd1762a2dacb3409edff803392ad3c9d3ebd17451f4613693a3d020