blackbasta | fff35c2da67eef6f1a10c585b427ac32e7f06f4e4460542207abcd62264e435f

Analysis

max time kernel
95s
max time network
139s
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

b365faebaf416681b5f376c8aa4f4470
SHA1

591d363928f0d5f4629196d60fd899469267da09
SHA256

fff35c2da67eef6f1a10c585b427ac32e7f06f4e4460542207abcd62264e435f
SHA512

e1617284be6fc9652062a92c03578327267a9731075afbc9f05c70328a169e5a5dc1dd625f459896dcb79479d071b486eb9be2559d3431502949e344a32ba0ae
SSDEEP

24576:wjlZDq1Een/s9NUuKF+gEn7gKheviz6GYtVb9BXpV7wldFu8hod/Qodly:wjlreiUuKFS70A059/V7GFadRd

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: 9daba746-192e-4867-97be-bcb5b27d1547 *!* 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 (2428) 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-1-5-21-70482961-775596374-3727440602-1000\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.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\msptlsimm.dll	file.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-libraryloader-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	file.exe
File created	C:\Program Files\WindowsApps\Microsoft.NET.Native.Runtime.2.2_2.2.27328.0_x64__8wekyb3d8bbwe\AppxMetadata\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\offsymxl.ttf	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-string-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vreg\osm.x-none.msi.16.x-none.vreg.dat	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-20_contrast-black.png	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sq.txt	file.exe
File created	C:\Program Files\Internet Explorer\images\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Internet Explorer\uk-UA\iexplore.exe.mui	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp2-pl.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-ppd.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\AlarmsLargeTile.contrast-white_scale-100.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\ContactPhoto.scale-180.png	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\sunec.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.SkypeApp_14.53.77.0_neutral_split.scale-125_kzf8qxf38zg5c\AppxBlockMap.xml	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-96_altform-unplated.png	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-string-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.GetHelp_10.1706.13331.0_x64__8wekyb3d8bbwe\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\dicjp.bin	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\pt-br.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_x64__8wekyb3d8bbwe\Microsoft.Pay.Background.winmd	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OARTODF.DLL	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteSectionSmallTile.scale-125.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.contrast-black_targetsize-20.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptyShare-Dark.scale-200.png	file.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\t2k.dll	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_OEM_Perp-ul-phn.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OUTLFLTR.DLL	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.DesktopAppInstaller_1.0.30251.0_x64__8wekyb3d8bbwe\Assets\AppPackageBadgeLogo.scale-200.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\EmptySearch-Dark.scale-200.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\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-60_altform-lightunplated.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Doughboy.scale-250.png	file.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.exe	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ExcelFloatieTextModel.bin	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-30_altform-unplated_contrast-white.png	file.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessRuntimeR_PrepidBypass-ppd.xrm-ms	file.exe
File created	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.Windows.Photos_2019.19071.12548.0_neutral_split.scale-125_8wekyb3d8bbwe\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\DeletedAllUserPackages\Microsoft.DesktopAppInstaller_1.0.30251.0_neutral_split.scale-125_8wekyb3d8bbwe\resources.pri	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\TimerSmallTile.contrast-black_scale-100.png	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ro.txt	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\notificationsUI\notificationCenter.css	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.targetsize-16_altform-unplated_contrast-black.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\GenericMailLargeTile.scale-400.png	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxCalendarWideTile.scale-400.png	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-pl.xrm-ms	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_KMS_Client_AE-ul-oob.xrm-ms	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-60_altform-unplated.png	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\Microsoft.mshtml.dll	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_neutral_~_8wekyb3d8bbwe\AppxMetadata\AppxBundleManifest.xml	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailWideTile.scale-200.png	file.exe
File opened for modification	C:\Program Files\Microsoft Office\AppXManifest.xml	file.exe
File created	C:\Program Files\Mozilla Firefox\gmp-clearkey\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RHeartbeatConfig.xml	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vreg\osmux.x-none.msi.16.x-none.vreg.dat	file.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_neutral_split.scale-100_kzf8qxf38zg5c\AppxSignature.p7x	file.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\resources.pri	file.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_KMS_Client_AE-ppd.xrm-ms	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
2460	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.f3rgm31zm	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.f3rgm31zm\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.f3rgm31zm\DefaultIcon	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4156	vssvc.exe
Token: SeRestorePrivilege	4156	vssvc.exe
Token: SeAuditPrivilege	4156	vssvc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5028 wrote to memory of 1100	5028	file.exe	87
PID 5028 wrote to memory of 1100	5028	file.exe	87
PID 5028 wrote to memory of 1100	5028	file.exe	87
PID 1100 wrote to memory of 2460	1100	cmd.exe	89
PID 1100 wrote to memory of 2460	1100	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:5028
- 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:1100
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2460

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4156

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
1cde8178a6c4a225a9f19388c298f6b6

SHA1
aaf8a418a707ae7e5ece18ce577d5e00dd62520f

SHA256
ede89a28222d2b76a52244233cacf13788fa6138bfdf6d1a7a5455d31a22cfd0

SHA512
e6241aaad3fa84ef7f9d86c772d108c61b1a9ace5fa10d26d918328b1b13436a6a5e0c04a9ba4f9d48eab1a77cf48d9990445bb4b37edb525bb2719e82410bf8

Download Submit
memory/5028-0-0x0000000000360000-0x00000000004D7000-memory.dmp

Filesize
1.5MB

Download
memory/5028-1-0x0000000000360000-0x00000000004D7000-memory.dmp

Filesize
1.5MB

Download
memory/5028-2-0x00000000031A0000-0x0000000003284000-memory.dmp

Filesize
912KB

Download
memory/5028-4-0x00000000031A0000-0x0000000003284000-memory.dmp

Filesize
912KB

Download
memory/5028-263-0x0000000000360000-0x00000000004D7000-memory.dmp

Filesize
1.5MB

Download
memory/5028-836-0x00000000031A0000-0x0000000003284000-memory.dmp

Filesize
912KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads