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
Behavioral task
behavioral1
Sample
21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
Resource
win7-20230220-en
windows7-x64
11 signatures
150 seconds
Behavioral task
behavioral2
Sample
21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target 21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda.exe
- Size 7.0MB
- Sample230330-pnymcscf32
- SHA256 21033cd24a9d775d7daa7bbc5c5b007553f205ac0febb6bae3fa35c700676bda
- MD5 ed891e4fd173700fac93b3dda30517c9
- SHA1 e05e9cc2f28bcd17f5285a34db2894bad9ccd53a
- SHA512 58d3254bca944cb60450e3ac352a3674ca5a1dea1142112726349931cbed6428e5db03004480d218bf4c63ce6d9847e74dfe9f0da455c9587cf47c5a7089e7fc
- SSDEEP 98304:wkwtlijhe6cZyFAz5FNZiTfVFScxge3SO9o:wkilvxFNkxpx/19o
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
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.
- Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
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
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.
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.
Processes
-
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.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵PID:1364
-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:5052 -
C:\Windows\System32\vssadmin.exeC:\Windows\System32\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1572
-
-
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2644
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\ProgramData\readme.txt
- Size 394B
- SHA256 677ddbeefb459f03432a0d2d24f13f0dcec1289722639fb34849aa41a4bac620
- MD5 0394335bf42f1f1a1a730ec7eec45b73
- SHA1 f1d6f7decd3120826b870479f45501acd979df47
- SHA512 ea61fcecab48e463b2737c35247b30d03e626f3db9bccdce200b818bf52b6c3a32707b4356fbd6ff915b69cac2b5829d44a3f9fa31357dc5cb9ee5381636ddd3
- MD5 SHA1 SHA512