blackbasta | 350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd

Analysis

max time kernel
148s
max time network
105s
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

737KB
MD5

0bf7bc20496143a9f028e77ab47b4698
SHA1

aa54013aeb502b4a936331deb76a6411f1f1ade7
SHA256

350ba7fca67721c74385faff083914ecdd66ef107a765dfb7ac08b38d5c9c0bd
SHA512

5e94cd77c4ad6dfa1064915ca0f4d117a2e3a4e924d05a16df0b223a5a0cbcb6124627e41d184aa0584f3ff3bbd5f9f913964887c7eb140e105317d4f5709981
SSDEEP

12288:bO+sm75a7DI9Mv53VI/XfaUs442JbV24chSS1i2wZbDFMMWzVFq:rh75a7M9S3VYa4npY4cFM2MWhY

Score

10^/10

blackbasta defense_evasion discovery execution impact 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://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion/ Login ID: 2943b2b6-dc20-44a7-9dc4-94f7cb67f695 *!* 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://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 (1633) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-pl.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTest-ppd.xrm-ms	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\ipcclientcerts.dll	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\removed-files	file.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\CommunityInterop.winmd	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Gamerpics.winmd	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Video.UI.exe	file.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0018-0000-1000-0000000FF1CE.xml	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processthreads-l1-1-1.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Grace-ul-oob.xrm-ms	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_neutral_split.scale-100_kzf8qxf38zg5c\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\Curve25519Wrap.dll	file.exe
File opened for modification	C:\Program Files\Internet Explorer\en-US\ieinstal.exe.mui	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Diagnostics.Tracing.dll	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\policytool.exe	file.exe
File opened for modification	C:\Program Files\Microsoft Office\Office16\OSPP.HTM	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_neutral_split.scale-125_8wekyb3d8bbwe\AppxManifest.xml	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\resources.pri	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ppd.xrm-ms	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\charsets.jar	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\nio.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusDemoR_BypassTrial365-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\ImagingDevices.exe	file.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\sqmapi.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_2019.305.632.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\he.txt	file.exe
File created	C:\Program Files\Windows Photo Viewer\it-IT\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Reflection.dll	file.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\concrt140.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-math-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files\Windows Media Player\it-IT\wmplayer.exe.mui	file.exe
File opened for modification	C:\Program Files (x86)\Windows Media Player\de-DE\mpvis.dll.mui	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppInstallerPythonRedirector.exe	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\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\System.Runtime.Serialization.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019MSDNR_Retail-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\Microsoft.Win32.Primitives.dll	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\clrcompression.dll	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jfxwebkit.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Grace-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O17EnterpriseVL_Bypass30-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription3-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_OEM_Perp-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\VariableFrameRateVideoPlayer.xbf	file.exe
File created	C:\Program Files\Common Files\microsoft shared\VGX\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	file.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\axvlc.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.People_10.1902.633.0_x64__8wekyb3d8bbwe\clrcompression.dll	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_neutral_split.scale-100_8wekyb3d8bbwe\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.StorePurchaseApp_11811.1001.18.0_x64__8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File created	C:\Program Files (x86)\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\include\jvmti.h	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\msvcp140_2.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\AppxBlockMap.xml	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\XboxNano.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftStickyNotes_3.6.73.0_x64__8wekyb3d8bbwe\RuntimeConfiguration.winmd	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\lib\orb.idl	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.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
3712	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u\DefaultIcon	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.taovhsr3u\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3904	vssvc.exe
Token: SeRestorePrivilege	3904	vssvc.exe
Token: SeAuditPrivilege	3904	vssvc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 560 wrote to memory of 3544	560	file.exe	83
PID 560 wrote to memory of 3544	560	file.exe	83
PID 560 wrote to memory of 3544	560	file.exe	83
PID 3544 wrote to memory of 3712	3544	cmd.exe	86
PID 3544 wrote to memory of 3712	3544	cmd.exe	86

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⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:560
- 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:3544
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3712

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3904

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

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact