blackbasta | acb60f0dd19a9a26aaaefd3326db8c28f546b6b0182ed2dcc23170bcb0af6d8f

Analysis

max time kernel
132s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 16:58

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General

Target

file.exe
Size

885KB
MD5

2f90cd68e4a92c5151c6e43902397a13
SHA1

2084ae47dcdda6161c8697e995512448facba37c
SHA256

acb60f0dd19a9a26aaaefd3326db8c28f546b6b0182ed2dcc23170bcb0af6d8f
SHA512

7bd69feea8c2251fb6ad0edf69cf46ea32c316ac1133af7bd1cc87936c4968bf059dcdc7abaf7241a9b7ff4a6b106ba93a90981a5d9ba5104266628a1e1030fc
SSDEEP

24576:WstUpRlem5dWzsj9c959552tdPsq0EmXMHro:V+YmKzsj9c959552td0q0Eq4ro

Score

10^/10

blackbasta defense_evasion discovery execution impact persistence ransomware

Malware Config

Extracted

Path

C:\Program Files\instructions_read_me.txt

Family

blackbasta

Ransom Note

ATTENTION! Your network has been breached and all data was encrypted. Please contact us at: https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/ Login ID: 9064b39a-4d26-4a57-828c-c2e1a49ffc8c *!* To access .onion websites download and install Tor Browser at: https://www.torproject.org/ (Tor Browser is not related to us) *!* To restore all your PCs and get your network working again, follow these instructions: - Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. It doesn't matter, who are trying to do this, either it will be your IT guys or a recovery agency. Please follow these simple rules to avoid data corruption: - Do not modify, rename or delete files. Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. - Do not hire a recovery company. They can't decrypt without the key. They also don't care about your business. They believe that they are good negotiators, but it is not. They usually fail. So speak for yourself. Waiting you in a chat.

URLs

https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/

Signatures

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware blackbasta
Blackbasta family
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Local\\Temp\\file.exe"	file.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\VSTO\10.0\VSTOInstaller.config	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\accessibility.properties	file.exe
File created	C:\Program Files\VideoLAN\VLC\locale\lt\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Internet Explorer\pdm.dll	file.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\it-IT\sbdrop.dll.mui	file.exe
File created	C:\Program Files (x86)\Common Files\Adobe AIR\Versions\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA02264_.WMF	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SO00190_.WMF	file.exe
File created	C:\Program Files (x86)\Microsoft Office\MEDIA\instructions_read_me.txt	file.exe
File created	C:\Program Files\Windows Mail\de-DE\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Java\jre7\bin\eula.dll	file.exe
File opened for modification	C:\Program Files\Windows Sidebar\Gadgets\CPU.Gadget\drag.png	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\GIFT.XML	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\fsdefinitions\keypad.xml	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\MSAIN.DLL	file.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\fr-FR\msaddsr.dll.mui	file.exe
File created	C:\Program Files\VideoLAN\VLC\locale\ka\instructions_read_me.txt	file.exe
File created	C:\Program Files\VideoLAN\VLC\plugins\demux\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PPTICO.EXE	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BL00242_.WMF	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OutlookAutoDiscover\YAHOO.CO.JP.XML	file.exe
File opened for modification	C:\Program Files\DVD Maker\offset.ax	file.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\de-DE\Sidebar.exe.mui	file.exe
File created	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.0\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files\Microsoft Games\Multiplayer\Checkers\ja-JP\chkrzm.exe.mui	file.exe
File opened for modification	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.5\Workflow.VisualBasic.Targets	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\MAPIPH.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02208U.BMP	file.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\Stacking\NavigationLeft_ButtonGraphic.png	file.exe
File opened for modification	C:\Program Files\Java\jre7\bin\plugin2\msvcr100.dll	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\BCSAutogen.dll	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\IPSEventLogMsg.dll	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\ACEWDAT.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Templates\1033\Office Word 2003 Look.dotx	file.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\JSProfilerCore.dll	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipskor.xml	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\1033\GR8GALRY.GRA	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ACCWIZ\ACWZMAIN.ACCDE	file.exe
File created	C:\Program Files\VideoLAN\VLC\lua\sd\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Windows NT\TableTextService\TableTextServiceSimplifiedQuanPin.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\FPERSON.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BIZCARD.DPV	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\jre\lib\jfr.jar	file.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DissolveNoise.png	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BL00098_.WMF	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\ASCIIENG.LNG	file.exe
File opened for modification	C:\Program Files (x86)\Windows Sidebar\en-US\sbdrop.dll.mui	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00369_.WMF	file.exe
File opened for modification	C:\Program Files\Common Files\System\msadc\en-US\msadcer.dll.mui	file.exe
File opened for modification	C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5\System.Xml.Linq.dll	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AN01039_.WMF	file.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Vignette\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\GFX.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PRTF9.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\OneNote\SendToOneNote.ini	file.exe
File opened for modification	C:\Program Files\Windows Media Player\it-IT\wmlaunch.exe.mui	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\LOOKUP.DAT	file.exe
File created	C:\Program Files\Java\jdk1.7.0_80\jre\instructions_read_me.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PH02058U.BMP	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WNTER_01.MID	file.exe
File opened for modification	C:\Program Files\Java\jre7\lib\deploy\ffjcext.zip	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Concourse.thmx	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0152606.WMF	file.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
2032	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ox7oqqrx3\DefaultIcon	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ox7oqqrx3	file.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ox7oqqrx3\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	file.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2248	file.exe
2248	file.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2104	vssvc.exe
Token: SeRestorePrivilege	2104	vssvc.exe
Token: SeAuditPrivilege	2104	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2248 wrote to memory of 1572	2248	file.exe	30
PID 2248 wrote to memory of 1572	2248	file.exe	30
PID 2248 wrote to memory of 1572	2248	file.exe	30
PID 2248 wrote to memory of 1572	2248	file.exe	30
PID 1572 wrote to memory of 2032	1572	cmd.exe	32
PID 1572 wrote to memory of 2032	1572	cmd.exe	32
PID 1572 wrote to memory of 2032	1572	cmd.exe	32
PID 1572 wrote to memory of 2032	1572	cmd.exe	32

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\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1572
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2032

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

C:\Program Files\instructions_read_me.txt

Filesize
1KB

MD5
15e24104e437778892cd657b78a3b60b

SHA1
80eff05bf1d077b61515f42dceb0b5f7d0151743

SHA256
80d676ea1d2fcc8ec7d928a6b7c349a0e324096a5ec23068756509c85f6b3741

SHA512
d6639407bcad99ea9e530d644f259ea8c953c9c0fb3e3f625ac7e04f29b4764c304a1c3da07e59c220508fda25fb821ee2b5f4fe970627e8a949e2787fd9577b

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