blackbasta | 03309c90e6c60a2e3cd44374efa3003ae10cd9e05ba6a39c77aa5289b32cb969

Analysis

max time kernel
147s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 discovery execution impact ransomware spyware stealer

Malware Config

Extracted

Path

C:\ProgramData\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 (9743) 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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\readme.txt	BlackBasta_03.bin.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\DataServices\DESKTOP.INI	BlackBasta_03.bin.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\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\Java\jdk1.7.0_80\lib\visualvm\platform\modules\org-netbeans-core.jar	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\FormsStyles\Desert\TAB_OFF.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.emf.ecore_2.10.1.v20140901-1043\META-INF\ECLIPSE_.SF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BL00012_.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0241773.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\CAGCAT10\J0251871.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\EXCEL.DEV_COL.HXT	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\OMSMMS.CFG	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsStyles\Desert\HEADER.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Backgammon\fr-FR\bckgRes.dll.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\plugins\packetizer\libpacketizer_mlp_plugin.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\AUTOSHAP\BD18238_.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\FORMS\1033\CONTACTL.ICO	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Resolute	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jre7\bin\deploy.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA00068_.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GrooveForms5\bg_Earthy.gif	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\dtplugin\deployJava1.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-modules-sendopts_zh_CN.jar	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jre7\lib\zi\America\Regina	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\America\Cambridge_Bay	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGREPFRM.XML	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\Adobe AIR\Versions\1.0\Adobe AIR Application Installer.exe	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\CANYON\PREVIEW.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\PDIR1F.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolBMPs\Form_StatusImageMask.bmp	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jre7\bin\kcms.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Australia\Darwin	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\DD00413_.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\plugins\codec\libdvbsub_plugin.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\modules\locale\org-netbeans-modules-profiler-selector-api_zh_CN.jar	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD14980_.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\main\base_rtl.xml	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Office.en-us\promointl.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\Locales\it.pak	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms5\rtf_alignleft.gif	BlackBasta_03.bin.exe
File created	C:\Program Files\VideoLAN\VLC\plugins\visualization\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\WWINTL.DLL.IDX_DLL	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\SIGN.XML	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\bin\t2k.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Templates\1033\FAX\MedianFax.Dotx	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\plugins\access\libsftp_plugin.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\msadc\de-DE\msaddsr.dll.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\SCHEME50.CSS	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.jrockit.mc.alert_5.5.0.165303.jar	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Internet Explorer\Timeline.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Microsoft Games\Chess\en-US\Chess.exe.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ja-JP\ShapeCollector.exe.mui	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.0\PresentationFramework.Royale.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\Publisher\Backgrounds\J0143750.GIF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Visual Studio 8\Common7\IDE\PublicAssemblies\Microsoft.VisualStudio.Tools.Applications.DesignTime.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Mozilla Firefox\minidump-analyzer.exe	BlackBasta_03.bin.exe
File created	C:\Program Files\Google\Chrome\Application\106.0.5249.119\readme.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HM00426_.WMF	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PROOF\MSHY7EN.LEX	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\plugins\codec\libadpcm_plugin.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\plugins\com.sun.el_2.2.0.v201303151357.jar	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms3\FormsViewAttachmentIconsMask.bmp	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\Groove\ToolData\groove.net\GrooveForms4\rtf_justify.gif	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\plugins\misc\libgnutls_plugin.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\v3.5\fr\System.Web.Entity.Resources.dll	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\Office Setup Controller\Office64.en-us\Office64MUISet.XML	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lv.txt	BlackBasta_03.bin.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Slipstream.xml	BlackBasta_03.bin.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

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
2804	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	2312	vssvc.exe
Token: SeRestorePrivilege	2312	vssvc.exe
Token: SeAuditPrivilege	2312	vssvc.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1036 wrote to memory of 2688	1036	BlackBasta_03.bin.exe	32
PID 1036 wrote to memory of 2688	1036	BlackBasta_03.bin.exe	32
PID 1036 wrote to memory of 2688	1036	BlackBasta_03.bin.exe	32
PID 1036 wrote to memory of 2820	1036	BlackBasta_03.bin.exe	34
PID 1036 wrote to memory of 2820	1036	BlackBasta_03.bin.exe	34
PID 1036 wrote to memory of 2820	1036	BlackBasta_03.bin.exe	34
PID 2820 wrote to memory of 2804	2820	cmd.exe	36
PID 2820 wrote to memory of 2804	2820	cmd.exe	36
PID 2820 wrote to memory of 2804	2820	cmd.exe	36

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⤵
- Drops startup file
- Drops desktop.ini file(s)
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1036
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  PID:2688
- 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:2820
- - C:\Windows\System32\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2804

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2312

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

Credentials from Web Browsers

T1555.003

Windows Credential Manager

T1555.004

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact