blackbasta | 7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a

Analysis

max time kernel
78s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-06-2024 08:43

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General

Target

7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
Size

543KB
MD5

998022b70d83c6de68e5bdf94e0f8d71
SHA1

b87a947f3e85701fcdadd733e9b055a65a3b1308
SHA256

7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a
SHA512

2744b77f951bd2bb34b094dd3b54fcf8f7dca76e03c745809edc045749c814c7d88c9ddd69ad684a1c156716afae76b5ebec3f932d0f2a72b242878134f65647
SSDEEP

12288:M1DTMHixr1moQqUiXINDl/m1s6BQio67VlA:AzmoQqUiXw2s6yiVx

Score

10^/10

blackbasta defense_evasion execution impact ransomware

Malware Config

Extracted

Path

C:\Program Files (x86)\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

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware blackbasta
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (2617) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\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\Licenses16\MondoR_OEM_Perp-pl.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_Retail-pl.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vreg\officemuiset.msi.16.en-us.vreg.dat	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\7-Zip\Lang\id.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-ul-phn.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\Documentation.url	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-GB\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MINSBROAMINGPROXY.DLL	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\VideoLAN\VLC\locale\fi\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTrial-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Retail-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription5-pl.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_Grace-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Trial-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome.VisualElementsManifest.xml	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroSup64.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Grace-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files (x86)\Microsoft.NET\Primary Interop Assemblies\Microsoft.mshtml.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sv-se.dll	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\O365SmallBusPremR_Subscription4-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\Ole DB\msdaurl.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ul-phn.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Trial-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.et-ee.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipschs.xml	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win10.mp4	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\npvlc.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Common Files\System\ado\es-ES\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Common Files\System\ado\it-IT\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_KMS_Client_AE-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe.manifest	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Java\jre-1.8\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_Subscription-pl.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Welcome.pdf	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-2-0.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp4-ul-phn.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_KMS_Client-ul.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_KMS_ClientC2R-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial5-ppd.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\7-Zip\Lang\bg.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\7-Zip\Lang\co.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Microsoft Office\root\Integration\Addons\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-pl.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-ul-oob.xrm-ms	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\logs\maintenanceservice-install.log	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\unpack.dll	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files (x86)\Common Files\System\msadc\it-IT\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files (x86)\Common Files\System\Ole DB\es-ES\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe
File created	C:\Program Files\Common Files\microsoft shared\Triedit\en-US\readme.txt	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
4000	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	3852	vssvc.exe
Token: SeRestorePrivilege	3852	vssvc.exe
Token: SeAuditPrivilege	3852	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4188 wrote to memory of 4336	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	92
PID 4188 wrote to memory of 4336	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	92
PID 4188 wrote to memory of 4336	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	92
PID 4336 wrote to memory of 4000	4336	cmd.exe	94
PID 4336 wrote to memory of 4000	4336	cmd.exe	94
PID 4188 wrote to memory of 516	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	97
PID 4188 wrote to memory of 516	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	97
PID 4188 wrote to memory of 516	4188	7883f01096db9bcf090c2317749b6873036c27ba92451b212b8645770e1f0b8a.exe	97

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

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:4188
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4336
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4000
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  PID:516

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3852

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4116,i,11266875042087428226,16669718873272757238,262144 --variations-seed-version --mojo-platform-channel-handle=4208 /prefetch:8
1⤵
PID:1164

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact