Analysis
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max time kernel
149s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20230712-en -
resource tags
arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system -
submitted
22-08-2023 14:42
Behavioral task
behavioral1
Sample
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
Resource
win7-20230712-en
windows7-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
Resource
win10v2004-20230703-en
windows10-2004-x64
9 signatures
150 seconds
General
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Target
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
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Size
543KB
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MD5
998022b70d83c6de68e5bdf94e0f8d71
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SHA1
b87a947f3e85701fcdadd733e9b055a65a3b1308
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SHA256
7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a
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SHA512
2744b77f951bd2bb34b094dd3b54fcf8f7dca76e03c745809edc045749c814c7d88c9ddd69ad684a1c156716afae76b5ebec3f932d0f2a72b242878134f65647
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SSDEEP
12288:M1DTMHixr1moQqUiXINDl/m1s6BQio67VlA:AzmoQqUiXw2s6yiVx
Score
10/10
Malware Config
Extracted
Path
C:\Program Files\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:80/
Your company id for log in: ba7a7058-3531-4b67-bae6-d602e9110361
URLs
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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Renames multiple (3705) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3408354897-1169622894-3874090110-1000\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 created C:\Program Files\VideoLAN\VLC\locale\ne\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files (x86)\Common Files\microsoft shared\TextConv\ja-JP\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0313974.JPG 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0099201.GIF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO01566_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\MSTORE_COL.HXC 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files (x86)\Microsoft Office\Office14\Document Parts\1033\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\VideoLAN\VLC\plugins\d3d9\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE03795_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO02270_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\1033\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Internet Explorer\IEShims.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Installed_resources14.xss 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0152568.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PPTICO.EXE 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PTXT9.DLL 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\ShapeCollector.exe 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00559_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH00236_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0382836.JPG 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SPACE_01.MID 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files (x86)\Adobe\Reader 9.0\Reader\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Microsoft.Office.InfoPath.Client.Internal.CLRHost.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\OUTLFLTR.DLL 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\DVD Maker\Shared\DvdStyles\Circle_SelectionSubpictureA.png 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SL01565_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\mshwgst.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\VideoLAN\VLC\plugins\lua\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00167_.GIF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BD07761_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Microsoft Games\Multiplayer\Backgammon\bckgzm.exe 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Internet Explorer\ja-JP\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files (x86)\Common Files\microsoft shared\ink\it-IT\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\icudt36.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00077_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Internet Explorer\en-US\iexplore.exe.mui 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\bin\java-rmi.exe 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\CONVERT\OLNOTE.FAE 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0285780.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\ADDINS\ColleagueImport.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-crt-conio-l1-1-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\api-ms-win-crt-stdio-l1-1-0.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\7-Zip\Lang\lij.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.151\goopdateres_en.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.151\goopdateres_da.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BD08773_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\TN00011_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Waveform.xml 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\fonts\TwemojiMozilla.ttf 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre7\bin\verify.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Common Files\microsoft shared\Stationery\Peacock.jpg 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD02161_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Java\jre7\bin\libxslt.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00090_.GIF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0093905.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0151067.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Mozilla Firefox\mozglue.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\OneNoteSyncPC.dll 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File created C:\Program Files\Common Files\Microsoft Shared\ink\th-TH\readme.txt 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\Common Files\Microsoft Shared\ink\hwrfrash.dat 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0304405.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0321179.JPG 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA01474_.WMF 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe File opened for modification C:\Program Files\DVD Maker\soniccolorconverter.ax 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2540 vssadmin.exe 2716 vssadmin.exe -
Modifies registry class 3 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.basta 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico" 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2912 vssvc.exe Token: SeRestorePrivilege 2912 vssvc.exe Token: SeAuditPrivilege 2912 vssvc.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 3044 wrote to memory of 2792 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 29 PID 3044 wrote to memory of 2792 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 29 PID 3044 wrote to memory of 2792 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 29 PID 3044 wrote to memory of 2792 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 29 PID 2792 wrote to memory of 2540 2792 cmd.exe 31 PID 2792 wrote to memory of 2540 2792 cmd.exe 31 PID 2792 wrote to memory of 2540 2792 cmd.exe 31 PID 2792 wrote to memory of 2540 2792 cmd.exe 31 PID 3044 wrote to memory of 2812 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 34 PID 3044 wrote to memory of 2812 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 34 PID 3044 wrote to memory of 2812 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 34 PID 3044 wrote to memory of 2812 3044 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe 34 PID 2812 wrote to memory of 2716 2812 cmd.exe 36 PID 2812 wrote to memory of 2716 2812 cmd.exe 36 PID 2812 wrote to memory of 2716 2812 cmd.exe 36 PID 2812 wrote to memory of 2716 2812 cmd.exe 36
Processes
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C:\Users\Admin\AppData\Local\Temp\7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe"C:\Users\Admin\AppData\Local\Temp\7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe"1⤵
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:2792 -
C:\Windows\system32\vssadmin.exeC:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2540
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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:2812 -
C:\Windows\SysWOW64\vssadmin.exeC:\Windows\System32\vssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2716
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2912
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
401B
MD5ab8018847c007394feabfa8f14626ebc
SHA1d4669c9e29be5e1f32d7c30bf65ec8bd72566b2f
SHA2562967e1d97d32605fc5ace49a10828800fbbefcc1e010f6004a9c88ef3ecdad88
SHA5120f893ccd2add411ed93cade6519f9d2faf22831c60c279f355355406b72d92670a33b6b04362becb2344f3ff0b6ff979d9c078b24628c9de65cd421cf43402b9