Analysis
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max time kernel
128s -
max time network
124s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
09-10-2022 16:22
Behavioral task
behavioral1
Sample
ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe
Resource
win10v2004-20220812-en
General
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Target
ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe
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Size
543KB
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MD5
53fdeb923b1890d29b8f29da77995938
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SHA1
a996ccd0d58125bf299e89f4c03ff37afdab33fc
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SHA256
ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e
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SHA512
7c78e880f3d2dfc163625ff3d0b4676aa6a083dbbeac270520679f6b21d1c449c5af720ca7b9a68b5b3309e2de8d586cfed5d9b3a78d006e6d981a1aaf88c535
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SSDEEP
12288:M1DTMHixr1moQqUiXINDl/m1s6BQio67VlAU:AzmoQqUiXw2s6yiVxR
Malware Config
Extracted
C:\readme.txt
https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion:80/
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\CompleteSend.tif => C:\Users\Admin\Pictures\CompleteSend.tif.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\AddPop.crw => C:\Users\Admin\Pictures\AddPop.crw.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\MountSubmit.png => C:\Users\Admin\Pictures\MountSubmit.png.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\FormatExit.tif => C:\Users\Admin\Pictures\FormatExit.tif.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\ProtectCheckpoint.raw => C:\Users\Admin\Pictures\ProtectCheckpoint.raw.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\InvokeSwitch.tif => C:\Users\Admin\Pictures\InvokeSwitch.tif.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File renamed C:\Users\Admin\Pictures\PingBlock.tif => C:\Users\Admin\Pictures\PingBlock.tif.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.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" ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\WordR_Trial-ul-oob.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\STSLIST.DLL ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\powerpoint.x-none.msi.16.x-none.vreg.dat ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.165.21\msedgeupdateres_pl.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000008\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\Common Files\microsoft shared\OFFICE16\Office Setup Controller\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\THIRDPARTYLICENSEREADME-JAVAFX.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\GKWord.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\OFFSYMXL.TTF ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\ink\Microsoft.Ink.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_vi.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ja-JP\InputPersonalization.exe.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Common Files\System\msadc\msadcor.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\System\msadc\it-IT\msaddsr.dll.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\SharedPerformance.man ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\bin\javaw.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ul-oob.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-ul-phn.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\7-Zip\Lang\eo.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.common.16.xml ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Document Themes 16\Wisp.thmx ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_Subscription-pl.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Grace-ul-oob.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\OSF.DLL ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\VideoLAN\VLC\locale\kn\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files (x86)\Google\Update\Install\{4CA8DFAB-80A0-43FC-AC78-FBACDED770CF}\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\es-ES\tabskb.dll.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\bin\unpack200.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\RestartMount.mpeg2 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ul-oob.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_ms.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0018-0000-1000-0000000FF1CE.xml ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\Microsoft.mshtml.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\hwrlatinlm.dat ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-pl.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp3-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\Mozilla Firefox\browser\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessEntry2019R_PrepidBypass-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTest-ul-oob.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\rsod\osmmui.msi.16.en-us.tree.dat ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\VideoLAN\VLC\locale\bg\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\System\msadc\es-ES\msdaprsr.dll.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\7-Zip\Lang\ug.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File created C:\Program Files\Microsoft Office\root\Client\readme.txt ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-runtime-l1-1-0.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019VL_KMS_Client_AE-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSOSTYLE.DLL ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\lib\currency.data ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_MAK-pl.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ppd.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_hr.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fr-CA\tipresx.dll.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.165.21\msedgeupdateres_lo.dll ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Common Files\System\Ole DB\it-IT\msdasqlr.dll.mui ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\bin\javapackager.exe ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 4732 vssadmin.exe -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1000 NOTEPAD.EXE -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 972 vssvc.exe Token: SeRestorePrivilege 972 vssvc.exe Token: SeAuditPrivilege 972 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 3760 wrote to memory of 4824 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 83 PID 3760 wrote to memory of 4824 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 83 PID 3760 wrote to memory of 4824 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 83 PID 4824 wrote to memory of 4732 4824 cmd.exe 85 PID 4824 wrote to memory of 4732 4824 cmd.exe 85 PID 3760 wrote to memory of 1132 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 88 PID 3760 wrote to memory of 1132 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 88 PID 3760 wrote to memory of 1132 3760 ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe 88
Processes
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C:\Users\Admin\AppData\Local\Temp\ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.exe"C:\Users\Admin\AppData\Local\Temp\ae7c868713e1d02b4db60128c651eb1e3f6a33c02544cc4cb57c3aa6c6581b6e.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:3760 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4824 -
C:\Windows\system32\vssadmin.exeC:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:4732
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet2⤵PID:1132
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:972
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:4536
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Downloads\readme.txt1⤵
- Opens file in notepad (likely ransom note)
PID:1000
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
401B
MD5ab8018847c007394feabfa8f14626ebc
SHA1d4669c9e29be5e1f32d7c30bf65ec8bd72566b2f
SHA2562967e1d97d32605fc5ace49a10828800fbbefcc1e010f6004a9c88ef3ecdad88
SHA5120f893ccd2add411ed93cade6519f9d2faf22831c60c279f355355406b72d92670a33b6b04362becb2344f3ff0b6ff979d9c078b24628c9de65cd421cf43402b9