blackbasta | d02e90d20c017aeed7641a978b2c99fb2bdaceaab0c387b332525dee3d8496ab

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
30-03-2023 12:29

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General

Target

21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
Size

7.0MB
MD5

ed891e4fd173700fac93b3dda30517c9
SHA1

e05e9cc2f28bcd17f5285a34db2894bad9ccd53a
SHA256

21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda
SHA512

58d3254bca944cb60450e3ac352a3674ca5a1dea1142112726349931cbed6428e5db03004480d218bf4c63ce6d9847e74dfe9f0da455c9587cf47c5a7089e7fc
SSDEEP

98304:wkwtlijhe6cZyFAz5FNZiTfVFScxge3SO9o:wkilvxFNkxpx/19o

Score

10^/10

blackbasta ransomware

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: ea3d3d33-1635-47f7-a1a4-0078267b30bb

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 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 7 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\PopSkip.png => C:\Users\Admin\Pictures\PopSkip.png.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File renamed	C:\Users\Admin\Pictures\ClearRedo.tiff => C:\Users\Admin\Pictures\ClearRedo.tiff.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File renamed	C:\Users\Admin\Pictures\OutResolve.png => C:\Users\Admin\Pictures\OutResolve.png.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File renamed	C:\Users\Admin\Pictures\RepairEnable.png => C:\Users\Admin\Pictures\RepairEnable.png.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File renamed	C:\Users\Admin\Pictures\BackupRequest.tif => C:\Users\Admin\Pictures\BackupRequest.tif.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Users\Admin\Pictures\ClearRedo.tiff	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File renamed	C:\Users\Admin\Pictures\BlockJoin.png => C:\Users\Admin\Pictures\BlockJoin.png.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-oob.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad.xml	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\SystemX86\mfc140enu.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\7-Zip\Lang\sr-spc.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jinfo.exe	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTrial-ppd.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-phn.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files (x86)\Common Files\Microsoft Shared\ink\mraut.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Garamond.xml	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipshi.xml	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\javacpl.cpl	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\pkeyconfig-office-client15.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\es-ES\TipTsf.dll.mui	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\notice.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\release	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File created	C:\Program Files (x86)\Common Files\Microsoft Shared\Stationery\readme.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-ul-phn.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Custom.propdesc	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\mip_telemetry.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\rsod\excel.x-none.msi.16.x-none.tree.dat	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Mozilla Firefox\api-ms-win-crt-process-l1-1-0.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File created	C:\Program Files\VideoLAN\VLC\locale\si\readme.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\lib\sound.properties	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.PPT	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.scale-100.png	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RUI.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcDemoR_BypassTrial365-ppd.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\STSLIST.DLL	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\ExcelNaiveBayesCommandRanker.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PROOF\msth8ES.DLL	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File created	C:\Program Files\VideoLAN\VLC\locale\az\LC_MESSAGES\readme.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jp2launcher.exe	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-ul-phn.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.XLS	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN048.XML	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File created	C:\Program Files\Common Files\microsoft shared\readme.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File created	C:\Program Files\Common Files\System\ado\en-US\readme.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\msadc\adcvbs.inc	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Mozilla Firefox\api-ms-win-core-localization-l1-2-0.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jmc.exe	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-ul-oob.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\106.0.5249.119\libEGL.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Internet Explorer\ja-JP\ieinstal.exe.mui	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ul-phn.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-80.png	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\7-Zip\Lang\si.txt	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Trial-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_KMS_Client-ppd.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\ReadMe.htm	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javaw.exe	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ul-oob.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-private-l1-1-0.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Mozilla Firefox\browser\VisualElements\PrivateBrowsing_70.png	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\lib\hijrah-config-umalqura.properties	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-file-l2-1-0.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp2-pl.xrm-ms	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\pe.dll	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1572	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2644	vssvc.exe
Token: SeRestorePrivilege	2644	vssvc.exe
Token: SeAuditPrivilege	2644	vssvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4804 wrote to memory of 1364	4804	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe	85
PID 4804 wrote to memory of 1364	4804	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe	85
PID 4804 wrote to memory of 5052	4804	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe	87
PID 4804 wrote to memory of 5052	4804	21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe	87
PID 5052 wrote to memory of 1572	5052	cmd.exe	89
PID 5052 wrote to memory of 1572	5052	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\21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
"C:\Users\Admin\AppData\Local\Temp\21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe"
1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4804
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  PID:1364
- 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:5052
- - C:\Windows\System32\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1572

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2644

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

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Downloads

C:\ProgramData\readme.txt

Filesize
394B

MD5
0394335bf42f1f1a1a730ec7eec45b73

SHA1
f1d6f7decd3120826b870479f45501acd979df47

SHA256
677ddbeefb459f03432a0d2d24f13f0dcec1289722639fb34849aa41a4bac620

SHA512
ea61fcecab48e463b2737c35247b30d03e626f3db9bccdce200b818bf52b6c3a32707b4356fbd6ff915b69cac2b5829d44a3f9fa31357dc5cb9ee5381636ddd3

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads