Analysis
-
max time kernel
149s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
27-04-2022 22:34
Static task
static1
Behavioral task
behavioral1
Sample
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
Resource
win10v2004-20220414-en
General
-
Target
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
-
Size
543KB
-
MD5
998022b70d83c6de68e5bdf94e0f8d71
-
SHA1
b87a947f3e85701fcdadd733e9b055a65a3b1308
-
SHA256
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a
-
SHA512
2744b77f951bd2bb34b094dd3b54fcf8f7dca76e03c745809edc045749c814c7d88c9ddd69ad684a1c156716afae76b5ebec3f932d0f2a72b242878134f65647
-
SSDEEP
12288:M1DTMHixr1moQqUiXINDl/m1s6BQio67VlA:AzmoQqUiXw2s6yiVx
Malware Config
Extracted
C:\readme.txt
https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.onion:80/
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 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\SelectOptimize.tif => C:\Users\Admin\Pictures\SelectOptimize.tif.basta 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File renamed C:\Users\Admin\Pictures\UpdateCopy.crw => C:\Users\Admin\Pictures\UpdateCopy.crw.basta 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg" 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\Microsoft Office\root\Office16\GKExcel.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Common Files\System\Ole DB\msdaenum.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Java\jdk1.8.0_66\jre\lib\security\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipsen.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp5-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-core-localization-l1-2-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\VideoLAN\VLC\vlc.exe 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\OFFRHD.DLL 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Common Files\Microsoft Shared\VSTO\vstoee90.tlb 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\ClearEnable.zip 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp2-ul-oob.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_MAKC2R-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\Resources.pri 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\db\bin\setNetworkClientCP.bat 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\jp2native.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\System\msadc\msaddsr.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\VideoLAN\VLC\locale\bn_IN\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ul-phn.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\vreg\excel.x-none.msi.16.x-none.vreg.dat 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Common Files\microsoft shared\ink\hu-HU\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-synch-l1-2-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial4-pl.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Grace-ul-oob.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\lgpllibs.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Retail-ul-phn.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\es-ES\TabTip.exe.mui 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\System\msadc\ja-JP\msdaremr.dll.mui 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\bin\jp2iexp.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\pkeyconfig-office-client15.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-phn.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-core-timezone-l1-1-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O17EnterpriseVL_Bypass30-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Microsoft Office\root\Office16\Document Parts\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Common Files\System\Ole DB\msdasqlr.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Google\Chrome\Application\chrome.VisualElementsManifest.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-environment-l1-1-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32ww.msi.16.x-none.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_Subscription-pl.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Java\jdk1.8.0_66\jre\lib\amd64\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\bin\glib-lite.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial4-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\VideoLAN\VLC\axvlc.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\microsoft shared\ink\ipsrom.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ul-phn.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Office16\mscss7wre_en.dub 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019DemoR_BypassTrial180-ul-oob.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Microsoft Office\root\Client\AppvIsvSubsystems64.dll\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\browser\features\[email protected] 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jdk1.8.0_66\jre\Welcome.html 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\content-types.properties 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Common Files\System\ado\msadomd28.tlb 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.71\goopdateres_vi.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial2-ul-oob.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial-ul-oob.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre1.8.0_66\lib\deploy\messages_fr.properties 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-phn.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Grace-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-ppd.xrm-ms 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1984 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" 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2948 vssvc.exe Token: SeRestorePrivilege 2948 vssvc.exe Token: SeAuditPrivilege 2948 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4788 wrote to memory of 1148 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 81 PID 4788 wrote to memory of 1148 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 81 PID 4788 wrote to memory of 1148 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 81 PID 1148 wrote to memory of 1984 1148 cmd.exe 83 PID 1148 wrote to memory of 1984 1148 cmd.exe 83 PID 4788 wrote to memory of 4356 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 86 PID 4788 wrote to memory of 4356 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 86 PID 4788 wrote to memory of 4356 4788 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe"C:\Users\Admin\AppData\Local\Temp\7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.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:4788 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1148 -
C:\Windows\system32\vssadmin.exeC:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1984
-
-
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet2⤵PID:4356
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2948