blackbasta | 03309c90e6c60a2e3cd44374efa3003ae10cd9e05ba6a39c77aa5289b32cb969

Analysis

max time kernel
86s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2024 00:55

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General

Target

BlackBasta_03.bin.exe
Size

716KB
MD5

ac625552601c190656dcb8cf4c21cd1d
SHA1

acad7a91c2812a0652d62f252774454c217666e9
SHA256

03309c90e6c60a2e3cd44374efa3003ae10cd9e05ba6a39c77aa5289b32cb969
SHA512

9e04dbbc624e808a678e64648dbc12deb286341876ea4590d50f996732dde2b91c6b7defbffcbdd3883c74a98488a0ad26540b364942d3117625770bc4e5e6d3
SSDEEP

12288:nB6xrkyoUKbidQN0M2TNK36YPiCuL1+jZ5tXdAD6x/NJxaZUzrd9gW6PdrO5SAou:nwrkyoUGJJgWQrOUAua

Score

10^/10

blackbasta credential_access defense_evasion execution impact ransomware stealer

Malware Config

Extracted

Path

C:\Recovery\readme.txt

Ransom Note

Your data are stolen and encrypted The data will be published on TOR website if you do not pay the ransom You can contact us and decrypt one file for free on this TOR site (you should download and install TOR browser first https://torproject.org) https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion/ Your company id for log in: 5f19e2b1-ca23-4d1d-b642-de2543c02742

URLs

https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.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 (3747) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware
Credentials from Password Stores: Windows Credential Manager 1 TTPs
Suspicious access to Credentials History.
credential_access stealer

Windows Credential Manager
T1555.004

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	BlackBasta_03.bin.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	BlackBasta_03.bin.exe
File created	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\en-US\mip.exe.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\7-Zip\Lang\uk.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Trial-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_OEM_Perp-ppd.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\legal\jdk\giflib.md	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\Client2019_eula.txt	BlackBasta_03.bin.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l1-2-0.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dtplugin\deployJava1.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\ReadMe.htm	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-locale-l1-1-0.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Retail-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ul-phn.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\cryptocme.sig	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Data.Common.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.RegularExpressions.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\7-Zip\Lang\fr.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Internet Explorer\ja-JP\iexplore.exe.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\Ole DB\msdaer.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_OEM_Perp-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp6-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ul-phn.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Retail-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Red.xml	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipsnor.xml	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Trial-pl.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ccme_asym.dll	BlackBasta_03.bin.exe
File created	C:\Program Files\dotnet\swidtag\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Facet.thmx	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ul-phn.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\rsod\wordmui.msi.16.en-us.tree.dat	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\Microsoft Shared\ink\dicjp.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-ppd.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019VL_KMS_Client_AE-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.RegularExpressions.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\System\wab32.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\Office16\SLERROR.XML	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Acrofx32.dll	BlackBasta_03.bin.exe
File created	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscorlib.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\InstallerMainShell.tlb	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\es-ES\rtscom.dll.mui	BlackBasta_03.bin.exe
File created	C:\Program Files\Common Files\System\de-DE\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessDemoR_BypassTrial365-ul-oob.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\rsod\dcf.x-none.msi.16.x-none.tree.dat	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.StackTrace.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.FileSystem.DriveInfo.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Memory.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-utility-l1-1-0.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\Ole DB\msxactps.dll	BlackBasta_03.bin.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\ja-JP\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\micaut.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\sound.properties	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\msedgeupdateres_af.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\EdgeUpdate.dat	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ul-phn.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_MAKC2R-ppd.xrm-ms	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\es-ES\wab32res.dll.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\axvlc.dll	BlackBasta_03.bin.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
4764	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	BlackBasta_03.bin.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta	BlackBasta_03.bin.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	BlackBasta_03.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4336	vssvc.exe
Token: SeRestorePrivilege	4336	vssvc.exe
Token: SeAuditPrivilege	4336	vssvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 1020	5068	BlackBasta_03.bin.exe	83
PID 5068 wrote to memory of 1020	5068	BlackBasta_03.bin.exe	83
PID 5068 wrote to memory of 3104	5068	BlackBasta_03.bin.exe	85
PID 5068 wrote to memory of 3104	5068	BlackBasta_03.bin.exe	85
PID 3104 wrote to memory of 4764	3104	cmd.exe	87
PID 3104 wrote to memory of 4764	3104	cmd.exe	87

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\BlackBasta_03.bin.exe
"C:\Users\Admin\AppData\Local\Temp\BlackBasta_03.bin.exe"
1⤵
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  PID:1020
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3104
- - C:\Windows\System32\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4764

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Windows Credential Manager

T1555.004

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact