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Analysis
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max time kernel
68s -
max time network
52s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
03/12/2022, 06:31
Static task
static1
Behavioral task
behavioral1
Sample
1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe
Resource
win7-20220901-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe
Resource
win10v2004-20220812-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe
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Size
461KB
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MD5
b1c520938a92644d0831b33df52d9e73
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SHA1
73d59c49596575a9bb08b87f28ebc7e7f8afec10
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SHA256
1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46
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SHA512
5b513d9701cb6441a0fb33858dd616f10fe1332a2c70725ed1b568032428cbdffad2f2d8cb4dab0503f31dec7cb7d367ae98135c483e28037e66f97280dcd33f
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SSDEEP
12288:mXmpJhb0veHINIDfaQ/lHYkVeUlkIDXQxlPnpkcEgNa:m8JhCeHywhkOAxVn6cEh
Score
10/10
Malware Config
Extracted
Path
C:\MSOCache\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: 533cd596-1fa4-477e-ae86-935498094e86
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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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg" 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe -
Drops file in Program Files directory 64 IoCs
description ioc Process File opened for modification C:\Program Files\DVD Maker\de-DE\DVDMaker.exe.mui 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\OmdBase.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\Pipeline.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\fa.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\Solitaire\de-DE\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Internet Explorer\ielowutil.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\da.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\uk.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\Shared\DissolveAnother.png 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\Mahjong\es-ES\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\SpiderSolitaire\de-DE\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-crt-locale-l1-1-0.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-crt-utility-l1-1-0.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\af.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\Chess\en-US\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Microsoft Games\Chess\Chess.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Internet Explorer\ja-JP\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-core-timezone-l1-1-0.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\msvcp140.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\es-ES\DVDMaker.exe.mui 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\FindUndo.vssm 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Common Files\Microsoft Shared\Stationery\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Common Files\Microsoft Shared\VC\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\DVD Maker\Shared\DvdStyles\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\FreeCell\ja-JP\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Office\Office14\1033\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files (x86)\Microsoft Sync Framework\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\pingsender.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\hr.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Common Files\Microsoft Shared\Filters\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\7z.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\mozavutil.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\ast.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\Shared\Filters.xml 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\release 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Microsoft Games\Chess\ChessMCE.lnk 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\7-Zip\Lang\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\SpiderSolitaire\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\ms.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Internet Explorer\DiagnosticsHub_is.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\vcruntime140.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\xul.dll.sig 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files (x86)\Internet Explorer\ielowutil.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Microsoft Games\Minesweeper\ja-JP\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Internet Explorer\en-US\DiagnosticsTap.dll.mui 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\7-zip32.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\7z.sfx 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files (x86)\Internet Explorer\es-ES\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\updater.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\tr.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\uz.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\DVD Maker\directshowtap.ax 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\sk.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Google\Chrome\Application\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\LICENSE 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Microsoft Games\Mahjong\Mahjong.exe 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files (x86)\Google\CrashReports\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Internet Explorer\fr-FR\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-crt-conio-l1-1-0.dll 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File opened for modification C:\Program Files\7-Zip\Lang\ku.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe File created C:\Program Files\Java\jre7\lib\readme.txt 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe -
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 556 vssadmin.exe 1544 vssadmin.exe -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 1496 vssvc.exe Token: SeRestorePrivilege 1496 vssvc.exe Token: SeAuditPrivilege 1496 vssvc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 960 wrote to memory of 956 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 27 PID 960 wrote to memory of 956 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 27 PID 960 wrote to memory of 956 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 27 PID 960 wrote to memory of 956 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 27 PID 956 wrote to memory of 556 956 cmd.exe 29 PID 956 wrote to memory of 556 956 cmd.exe 29 PID 956 wrote to memory of 556 956 cmd.exe 29 PID 956 wrote to memory of 556 956 cmd.exe 29 PID 960 wrote to memory of 980 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 32 PID 960 wrote to memory of 980 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 32 PID 960 wrote to memory of 980 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 32 PID 960 wrote to memory of 980 960 1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe 32 PID 980 wrote to memory of 1544 980 cmd.exe 34 PID 980 wrote to memory of 1544 980 cmd.exe 34 PID 980 wrote to memory of 1544 980 cmd.exe 34 PID 980 wrote to memory of 1544 980 cmd.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe"C:\Users\Admin\AppData\Local\Temp\1a8a283732f920d34233eac14ab03d681f3837b2e759df4ff1dd383249074e46.exe"1⤵
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:960 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:956 -
C:\Windows\system32\vssadmin.exeC:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:556
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:980 -
C:\Windows\SysWOW64\vssadmin.exeC:\Windows\System32\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1544
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1496