blackbasta | 0c964ac2f65f270eb19982b04ae346e72976bdf19b88ffd2308700dcce2b5ec0

Analysis

max time kernel
66s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-02-2025 16:58

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General

Target

file.exe
Size

2.7MB
MD5

80d8379fc7093ec9e24be089ea6fa448
SHA1

7c2da0be48cdf30db35105d5c4fc7759a0c10bf9
SHA256

0c964ac2f65f270eb19982b04ae346e72976bdf19b88ffd2308700dcce2b5ec0
SHA512

abb391bb1c0e909b98fd4eff90360a6490be2b8906190a58a653769d51bdd929d4dc2f5705149bc2782c0843632aa0f55cff652e91293e831c436d0928523f1f
SSDEEP

12288:oyTgj6xwzXu9qvuRrzC2qWx8EsFeZ5I34lMKODiU56:2hu9qGFzC2qWx0eZ5ClbiUE

Score

10^/10

blackbasta defense_evasion discovery execution impact ransomware

Malware Config

Extracted

Path

C:\ProgramData\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: eeded09d-2ac0-4e69-bf25-875cd524e744

URLs

https://aazsbsgya565vlu2c6bzy6yfiebkcbtvvcytvolt33s77xypi7nypxyd.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
Renames multiple (1545) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\J:	msiexec.exe
File opened (read-only)	\??\M:	msiexec.exe
File opened (read-only)	\??\P:	msiexec.exe
File opened (read-only)	\??\Q:	msiexec.exe
File opened (read-only)	\??\S:	msiexec.exe
File opened (read-only)	\??\G:	msiexec.exe
File opened (read-only)	\??\E:	msiexec.exe
File opened (read-only)	\??\N:	msiexec.exe
File opened (read-only)	\??\R:	msiexec.exe
File opened (read-only)	\??\Y:	msiexec.exe
File opened (read-only)	\??\B:	msiexec.exe
File opened (read-only)	\??\K:	msiexec.exe
File opened (read-only)	\??\L:	msiexec.exe
File opened (read-only)	\??\O:	msiexec.exe
File opened (read-only)	\??\W:	msiexec.exe
File opened (read-only)	\??\H:	msiexec.exe
File opened (read-only)	\??\I:	msiexec.exe
File opened (read-only)	\??\T:	msiexec.exe
File opened (read-only)	\??\U:	msiexec.exe
File opened (read-only)	\??\V:	msiexec.exe
File opened (read-only)	\??\X:	msiexec.exe
File opened (read-only)	\??\Z:	msiexec.exe
File opened (read-only)	\??\A:	msiexec.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	file.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\TextConv\RECOVR32.CNV	file.exe
File created	C:\Program Files\Google\readme.txt	file.exe
File created	C:\Program Files (x86)\Common Files\System\msadc\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Newsprint.thmx	file.exe
File created	C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AIR\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\Ole DB\sqlxmlx.dll	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\api-ms-win-crt-private-l1-1-0.dll	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\TWLAY32.DLL	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\VGX\VGX.dll	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\Stationery\SoftBlue.jpg	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Document Themes 14\Hardcover.thmx	file.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\CONCRETE\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\METCONV.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\Ole DB\msxactps.dll	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.cfg	file.exe
File opened for modification	C:\Program Files\Common Files\Services\verisign.bmp	file.exe
File created	C:\Program Files\DVD Maker\Shared\DvdStyles\Pets\readme.txt	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\javadoc.exe	file.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\BLUEPRNT\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\BD19582_.GIF	file.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\VideoLAN Website.url	file.exe
File created	C:\Program Files\VideoLAN\VLC\locale\nl\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\System\ado\msader15.dll	file.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.151\goopdateres_bg.dll	file.exe
File opened for modification	C:\Program Files (x86)\Internet Explorer\D3DCompiler_47.dll	file.exe
File created	C:\Program Files\VideoLAN\VLC\locale\co\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\ACEREP.DLL	file.exe
File opened for modification	C:\Program Files\Mozilla Firefox\browser\features\[email protected]	file.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\libvlccore.dll	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\ipsnor.xml	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\ktab.exe	file.exe
File opened for modification	C:\Program Files\Java\jre7\lib\plugin.jar	file.exe
File opened for modification	C:\Program Files\Microsoft Games\SpiderSolitaire\SpiderSolitaireMCE.lnk	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\ink\tabskb.dll	file.exe
File created	C:\Program Files (x86)\Microsoft Analysis Services\AS OLEDB\10\Resources\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\MSInfo\msinfo32.exe	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\EMABLT32.DLL	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Stars.htm	file.exe
File opened for modification	C:\Program Files\Microsoft Games\Hearts\ja-JP\Hearts.exe.mui	file.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\Help\1046\readme.txt	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\io.txt	file.exe
File opened for modification	C:\Program Files\Java\jre7\COPYRIGHT	file.exe
File created	C:\Program Files\Mozilla Firefox\defaults\pref\readme.txt	file.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\OutlookAutoDiscover\readme.txt	file.exe
File opened for modification	C:\Program Files\FormatGet.rle	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\THIRDPARTYLICENSEREADME-JAVAFX.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\mscss7cm_es.dub	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\sqlceoledb35.dll	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\OFFICE14\ACEERR.DLL	file.exe
File opened for modification	C:\Program Files\SetEnter.MOD	file.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\OfficeSoftwareProtectionPlatform\readme.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\PPTIRMV.XML	file.exe
File opened for modification	C:\Program Files\DVD Maker\Shared\DvdStyles\circle_glass_Thumbnail.bmp	file.exe
File opened for modification	C:\Program Files\Common Files\Microsoft Shared\Stationery\Genko_2.emf	file.exe
File opened for modification	C:\Program Files\Java\jdk1.7.0_80\bin\idlj.exe	file.exe
File created	C:\Program Files\VideoLAN\VLC\locale\lt\readme.txt	file.exe
File created	C:\Program Files (x86)\Common Files\System\msadc\it-IT\readme.txt	file.exe
File opened for modification	C:\Program Files\Internet Explorer\D3DCompiler_47.dll	file.exe
File created	C:\Program Files (x86)\Microsoft Office\Office14\readme.txt	file.exe
File opened for modification	C:\Program Files\7-Zip\Lang\az.txt	file.exe
File opened for modification	C:\Program Files (x86)\Microsoft Office\Office14\REVERSE.DLL	file.exe
File opened for modification	C:\Program Files (x86)\Common Files\microsoft shared\Smart Tag\FDATE.DLL	file.exe
File created	C:\Program Files (x86)\Common Files\microsoft shared\THEMES14\BLENDS\readme.txt	file.exe
File created	C:\Program Files\DVD Maker\fr-FR\readme.txt	file.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Installer\f77479b.mst	msiexec.exe
File opened for modification	C:\Windows\Installer\f77479b.mst	msiexec.exe
File opened for modification	C:\Windows\Installer\MSI6E5D.tmp	msiexec.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vssadmin.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MsiExec.exe

Interacts with shadow copies 3 TTPs 2 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
2532	vssadmin.exe
2852	vssadmin.exe

Modifies registry class 3 IoCs

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

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeBackupPrivilege	2396	vssvc.exe
Token: SeRestorePrivilege	2396	vssvc.exe
Token: SeAuditPrivilege	2396	vssvc.exe
Token: SeRestorePrivilege	3504	msiexec.exe
Token: SeTakeOwnershipPrivilege	3504	msiexec.exe
Token: SeSecurityPrivilege	3504	msiexec.exe
Token: SeRestorePrivilege	3504	msiexec.exe
Token: SeTakeOwnershipPrivilege	3504	msiexec.exe
Token: SeRestorePrivilege	3504	msiexec.exe
Token: SeTakeOwnershipPrivilege	3504	msiexec.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2684 wrote to memory of 2152	2684	file.exe	31
PID 2684 wrote to memory of 2152	2684	file.exe	31
PID 2684 wrote to memory of 2152	2684	file.exe	31
PID 2684 wrote to memory of 2152	2684	file.exe	31
PID 2152 wrote to memory of 2532	2152	cmd.exe	33
PID 2152 wrote to memory of 2532	2152	cmd.exe	33
PID 2152 wrote to memory of 2532	2152	cmd.exe	33
PID 2152 wrote to memory of 2532	2152	cmd.exe	33
PID 2684 wrote to memory of 2732	2684	file.exe	36
PID 2684 wrote to memory of 2732	2684	file.exe	36
PID 2684 wrote to memory of 2732	2684	file.exe	36
PID 2684 wrote to memory of 2732	2684	file.exe	36
PID 2732 wrote to memory of 2852	2732	cmd.exe	38
PID 2732 wrote to memory of 2852	2732	cmd.exe	38
PID 2732 wrote to memory of 2852	2732	cmd.exe	38
PID 2732 wrote to memory of 2852	2732	cmd.exe	38
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42
PID 3504 wrote to memory of 3132	3504	msiexec.exe	42

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⤵
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2684
- 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:2152
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2532
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - System Location Discovery: System Language Discovery
    - Interacts with shadow copies
    PID:2852

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2396

C:\Windows\system32\msiexec.exe
C:\Windows\system32\msiexec.exe /V
1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3504
- C:\Windows\syswow64\MsiExec.exe
  C:\Windows\syswow64\MsiExec.exe -Embedding C7A4A05EC185F50EDC86DC1503721799
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3132

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

T1006

Indicator Removal

T1070

File Deletion

T1070.004

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact