blackbasta | 3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e

Analysis

max time kernel
30s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
23-07-2024 01:51

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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 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 (1755) 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-1-5-21-1176886754-713327781-2233697964-1000\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\7-Zip\Lang\is.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-localization-l1-2-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.onenotemui.msi.16.en-us.xml	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\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial4-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Grace-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\ExtExport.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Slice.thmx	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Trial-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AuthoredExtensions.16.xml	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado20.tlb	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-synch-l1-2-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\lib\calendars.properties	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\kk.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files (x86)\Common Files\Microsoft Shared\VC\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_PrepidBypass-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\dt_shmem.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-ul-phn.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-file-l2-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-math-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\LanguageModel\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\keytool.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\klist.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-profile-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\instrument.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Mozilla Firefox\install.log	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\System\ado\msado21.tlb	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Retail-ul-phn.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp3-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp6-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail3-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Retail-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Trial-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\javafx-src.zip	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Retail-ppd.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-convert-l1-1-0.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcp120.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\tnameserv.exe	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_KMS_Client-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files\Microsoft Office\root\loc\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\zh-tw.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremDemoR_BypassTrial365-ul-oob.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail2-ul-phn.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\7-Zip\Lang\ka.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File created	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Resource\readme.txt	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.osmuxmui.msi.16.en-us.xml	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-pl.xrm-ms	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\RepoMan.dll	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\msadco.dll	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

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
4156	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	1044	vssvc.exe
Token: SeRestorePrivilege	1044	vssvc.exe
Token: SeAuditPrivilege	1044	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 3476	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	89
PID 1364 wrote to memory of 3476	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	89
PID 1364 wrote to memory of 3476	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	89
PID 3476 wrote to memory of 4156	3476	cmd.exe	91
PID 3476 wrote to memory of 4156	3476	cmd.exe	91
PID 1364 wrote to memory of 4680	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	94
PID 1364 wrote to memory of 4680	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	94
PID 1364 wrote to memory of 4680	1364	3d8713641264c41cd6784c5569c1447299fba88633070e40e70bb3ae2b4c5a4e.exe	94

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
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4156
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  PID:4680

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1044

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact