blackbasta | 723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224

Analysis

max time kernel
149s
max time network
129s
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

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General

Target

file.exe
Size

1.4MB
MD5

6441d7260944bcedc5958c5c8a05d16d
SHA1

46257982840493eca90e051ff1749e7040895584
SHA256

723d1cf3d74fb3ce95a77ed9dff257a78c8af8e67a82963230dd073781074224
SHA512

af88fd3a0a2728c811be524feee575d8d2d9623b7944021c83173e40dbec6b1fbe7bea64dcdd8f1dbebc7d8df76b40e5c9647e2586316ea46ceb191ebcf14d89
SSDEEP

24576:1p2gwjk6ikYhJ9lvGnYZvy48/V33ck7LnBAyldFu8hod/Qodly:1AgxkmvGnYWccjBAwFadRd

Score

10^/10

blackbasta defense_evasion discovery execution impact persistence ransomware

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: 26d371a9-efda-4e82-9989-01e292244d65 *!* 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

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware blackbasta
Blackbasta family
blackbasta
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 (4037) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2436272344-4274332273-444425594-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Local\\Temp\\file.exe"	file.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\AppList.scale-200.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarAppList.targetsize-96.png	file.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\rt3d.dll	file.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\pl-PL\tipresx.dll.mui	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\react-native-win32.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ExchangeLargeTile.scale-100.png	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-console-l1-2-0.dll	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.dll	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\legal\jdk\jpeg.md	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\resource.dll	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\x64\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsSoundRecorder_10.1906.1972.0_x64__8wekyb3d8bbwe\Assets\VoiceRecorderAppList.targetsize-64_altform-lightunplated.png	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\ado\msadomd28.tlb	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.XmlDocument.dll	file.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\adcvbs.inc	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ppd.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-72_altform-unplated_contrast-white.png	file.exe
File created	C:\Program Files\Windows Defender\de-DE\instructions_read_me.txt	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.Services.Store.Engagement_10.0.18101.0_x86__8wekyb3d8bbwe\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\TXP_TicketedEvent.png	file.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.jpg	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OUTLFLTR.DLL	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PSRCHPHN.DAT	file.exe
File opened for modification	C:\Program Files\Windows Media Player\Network Sharing\wmpnss_color32.bmp	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.WindowsDesktop.App.deps.json	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-20_altform-unplated.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-30_altform-lightunplated.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\Assets\MixedRealityPortalAppList.targetsize-16_altform-unplated.png	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\font\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ppd.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.targetsize-20.png	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\MicrosoftEdgeUpdateOnDemand.exe	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\CortanaApp.WinRT.dll	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.BingWeather_4.25.20211.0_neutral_split.scale-150_8wekyb3d8bbwe\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\msedgeupdateres_sr.dll	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.XPath.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\_Resources\0.rsrc	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\MSO.ACL	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\SharedMemoryUWP.winmd	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\IVY.DLL	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Grace-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\FreshPaint.Model.CX.dll	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-heap-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\OutlookPromoTile.scale-100.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubLargeTile.scale-100_contrast-black.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-20_contrast-white.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxGamingOverlay_2.34.28001.0_neutral_split.scale-100_8wekyb3d8bbwe\AppxBlockMap.xml	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteSplashLogo.scale-300.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\BuildInfo.xml	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_SubTest-pl.xrm-ms	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.Design.dll	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.CodeDom.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Microsoft.Advertising\bootstrap.js	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\Microsoft.People.Relevance.QueryClient.winmd	file.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Buffers.dll	file.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\i640.hash	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubWideTile.scale-100_contrast-white.png	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\ImmersiveVideoPlayback\instructions_read_me.txt	file.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4680	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.7878kr5jx\DefaultIcon	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.7878kr5jx	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.7878kr5jx\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1020	vssvc.exe
Token: SeRestorePrivilege	1020	vssvc.exe
Token: SeAuditPrivilege	1020	vssvc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4736 wrote to memory of 2640	4736	file.exe	87
PID 4736 wrote to memory of 2640	4736	file.exe	87
PID 4736 wrote to memory of 2640	4736	file.exe	87
PID 2640 wrote to memory of 4680	2640	cmd.exe	89
PID 2640 wrote to memory of 4680	2640	cmd.exe	89

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4736
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2640
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4680

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

C:\Program Files (x86)\instructions_read_me.txt

Filesize
1KB

MD5
ba21d49977850f54961ede73b7e9e480

SHA1
bd630b3dbe9d7139527c1ffdbb2161e7a9067ae0

SHA256
34757273c5e041f07b0352c51cfab2998ab676f3a39bc0f16a1b4d68f3fac4f8

SHA512
4bf9be5f41f7258357e838ba94f0aa2b7f17d8fe3266174aaf123156b422c4fb72e4d3fd36db7b2e3e9d13202202d2a6b0ecca06ee2a2a043ce6ad27ffd751e2

Download Submit
memory/4736-0-0x00000000000D0000-0x0000000000245000-memory.dmp

Filesize
1.5MB

Download
memory/4736-1-0x00000000000D0000-0x0000000000245000-memory.dmp

Filesize
1.5MB

Download
memory/4736-2-0x0000000003080000-0x0000000003164000-memory.dmp

Filesize
912KB

Download
memory/4736-4-0x0000000003080000-0x0000000003164000-memory.dmp

Filesize
912KB

Download
memory/4736-615-0x00000000000D0000-0x0000000000245000-memory.dmp

Filesize
1.5MB

Download
memory/4736-849-0x0000000003080000-0x0000000003164000-memory.dmp

Filesize
912KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads