blackbasta | 2a29806f2fe4302bc216d33ce1d96190f78f28e52f55cb9be8642497de72ea57

Analysis

max time kernel
33s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
24-07-2024 02:33

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General

Target

3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
Size

928KB
MD5

2dc4adf06247b4ed9031a53ef910626c
SHA1

789437e946b3e8d1ccd14ee70e42c7d89ba054b2
SHA256

3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e
SHA512

9e6eaa4b27e2d6bc1306c33e74465256fab086972680d3a0014cafca8f22bbf865ffaa0f81332ffef83287252faf2ca0c7f369d11412b19ffb57e8e72ea5e0ae
SSDEEP

24576:oUY29aeV/XqzB+qv6w8zJx/W2nz9dPOmX:oUYMPqzFvT8/W2nznP

Score

10^/10

blackbasta defense_evasion discovery execution impact ransomware

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: 41bdf082-8936-4e21-9f70-5446160a730f

URLs

https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion/

Signatures

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware 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 (1495) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest2-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest3-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\RenameEnter.tmp	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVClientIsv.man	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ja-jp.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipsdan.xml	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial1-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremDemoR_BypassTrial365-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\ucrtbase.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_Subscription-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Mozilla Firefox\mozavcodec.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\br.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\sspi_bridge.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcDemoR_BypassTrial365-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Mozilla Firefox\xul.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019DemoR_BypassTrial180-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\MSBuild\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\jfr.jar	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Java\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Trial-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Common Files\System\uk-UA\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\nl.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\nb-NO\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Retail-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-conio-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Trial-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.bg-bg.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_Grace-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial2-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\lij.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.log	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\IpsPlugin.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\t2k.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win8_RTL.mp4	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-stil.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ba.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-conio-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-xstate-l2-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-private-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\dotnet\host\fxr\7.0.16\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-runtime-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Grace-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\an.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\lv-LV\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipscsy.xml	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\javaws.jar	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files (x86)\Internet Explorer\images\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Common Files\microsoft shared\OFFICE16\Office Setup Controller\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_Subscription-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\mshwLatin.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Mozilla Firefox\vcruntime140_1.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\TabIpsps.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-filesystem-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.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
2888	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3052	vssvc.exe
Token: SeRestorePrivilege	3052	vssvc.exe
Token: SeAuditPrivilege	3052	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3612 wrote to memory of 1576	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	91
PID 3612 wrote to memory of 1576	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	91
PID 3612 wrote to memory of 1576	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	91
PID 1576 wrote to memory of 2888	1576	cmd.exe	93
PID 1576 wrote to memory of 2888	1576	cmd.exe	93
PID 3612 wrote to memory of 4404	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	96
PID 3612 wrote to memory of 4404	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	96
PID 3612 wrote to memory of 4404	3612	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	96

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\3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
"C:\Users\Admin\AppData\Local\Temp\3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe"
1⤵
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3612
- 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:1576
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2888
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4404

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3052

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

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact