Analysis
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max time kernel
105s -
max time network
108s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
16-10-2022 15:12
Static task
static1
Behavioral task
behavioral1
Sample
9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe
Resource
win7-20220812-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe
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Size
542KB
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MD5
c115bbbdb1a61f8c553d74802bfd78fb
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SHA1
1f439569e3c1c14ea9f02235f8f45c49e2764160
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SHA256
9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc
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SHA512
6ad701415ce5e1f94144a979f7e347499ecd80e4de4705dbe9570ad53a90b58034ea98f2ec9d257a330ec47ffeacdbd420f581ad8a4d76b0c7ad4bb198b1ab84
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SSDEEP
12288:trkm8R9qXgmj3d7khtgfpedbKbiTuDZWhswtik5j2w+f:2Ujt7+twpedbKb1dWhse9K
Score
10/10
Malware Config
Extracted
Path
C:\odt\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: 5c33d3df-a9bf-4899-a852-b2d2ce9944ec
URLs
https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion/
Signatures
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Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\FindInitialize.tiff 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File renamed C:\Users\Admin\Pictures\LimitCheckpoint.crw => C:\Users\Admin\Pictures\LimitCheckpoint.crw.basta 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File renamed C:\Users\Admin\Pictures\InstallEnter.raw => C:\Users\Admin\Pictures\InstallEnter.raw.basta 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File renamed C:\Users\Admin\Pictures\FindInitialize.tiff => C:\Users\Admin\Pictures\FindInitialize.tiff.basta 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Users\Admin\Pictures\SendRevoke.tiff 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File renamed C:\Users\Admin\Pictures\SendRevoke.tiff => C:\Users\Admin\Pictures\SendRevoke.tiff.basta 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg" 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Mozilla Firefox\browser\features\[email protected] 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files (x86)\Google\Update\Download\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Grace-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\SharedPerformance.man 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.165.21\psmachine_64.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_Grace-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\Common Files\microsoft shared\ink\lt-LT\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Gallery.thmx 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\micaut.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipshe.xml 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Grace-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Mozilla Maintenance Service\logs\maintenanceservice-install.log 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-pl.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Grace-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Trial-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipskor.xml 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ul-phn.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\VideoLAN\VLC\plugins\video_chroma\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\bin\rmic.exe 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files (x86)\Internet Explorer\de-DE\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\7-Zip\Lang\yo.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\PDFSigQFormalRep.pdf 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTrial-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\sdxbgt.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.165.21\msedgeupdateres_lt.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.165.21\msedgeupdateres_tt.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\System\msadc\it-IT\msdaremr.dll.mui 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\fre\StartMenu_Win7.wmv 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\VideoLAN\VLC\plugins\packetizer\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\pack200.exe 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\Common Files\microsoft shared\ink\pl-PL\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-pl.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\VideoLAN\VLC\locale\nl\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\msdatasrc.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MANIFEST.XML 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\excel.x-none.msi.16.x-none.vreg.dat 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\7-Zip\Lang\eo.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial3-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-pl.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\sv-SE\tipresx.dll.mui 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Mozilla Firefox\crashreporter.exe 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\en-US\rtscom.dll.mui 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\zh-TW\tipresx.dll.mui 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pt-br.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\policytool.exe 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Grace-ppd.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\VideoLAN\VLC\locale\az\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVClient.man 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\bin\rmiregistry.exe 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files (x86)\Common Files\System\ado\msadox.dll 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu.xml 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\MondoR_EnterpriseSub_Bypass30-ul-oob.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-pl.xrm-ms 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe File created C:\Program Files\VideoLAN\VLC\lua\sd\readme.txt 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4112 vssadmin.exe -
Modifies registry class 3 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 4788 vssvc.exe Token: SeRestorePrivilege 4788 vssvc.exe Token: SeAuditPrivilege 4788 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1316 wrote to memory of 4884 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 82 PID 1316 wrote to memory of 4884 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 82 PID 1316 wrote to memory of 4884 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 82 PID 4884 wrote to memory of 4112 4884 cmd.exe 84 PID 4884 wrote to memory of 4112 4884 cmd.exe 84 PID 1316 wrote to memory of 1256 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 87 PID 1316 wrote to memory of 1256 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 87 PID 1316 wrote to memory of 1256 1316 9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.exe"C:\Users\Admin\AppData\Local\Temp\9a55f55886285eef7ffabdd55c0232d1458175b1d868c03d3e304ce7d98980bc.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:1316 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4884 -
C:\Windows\system32\vssadmin.exeC:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:4112
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet2⤵PID:1256
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4788