blackbasta | 05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431

General

Target

05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431.dll
Size

800KB
MD5

f74cec233a9609461e7518dd4c90207b
SHA1

92408a8233567f8b10f30f83dfcdd98effe96dca
SHA256

05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431
SHA512

231a0fd347933b31bbfbebebd274c4da40177360f35f295e5fa8384ad30ad11666221c39be28e56866e4b7254f9cbe3956368352ea7f4fe48e89427df7a6bcb4
SSDEEP

12288:z0LOFSM++OeO+OeNhBBhhBBhlJ2//R18nBIs0I3sHGzVylK7Nb0tq0mxHu84NeiB:zGOFSmKqEI3sHGzVylK7Nb0U1Hu8WK

Score

10^/10

blackbasta discovery ransomware

Malware Config

Extracted

Path

C:\Program Files (x86)\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: ab2bada7-004d-468c-8c25-a08517ea2fa0 *!* 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

Drops file in Program Files directory 64 IoCs

Processes:

rundll32.exe

description	ioc	process
File created	C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_x64__8wekyb3d8bbwe\AppxMetadata\instructions_read_me.txt	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL058.XML	rundll32.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\ipshrv.xml	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\InsiderHubAppList.scale-100_contrast-white.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsFeedbackHub_1.1907.3152.0_x64__8wekyb3d8bbwe\Assets\InsiderHubAppList.targetsize-256_altform-lightunplated.png	rundll32.exe
File created	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\AppCore\instructions_read_me.txt	rundll32.exe
File created	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\instructions_read_me.txt	rundll32.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Input.Manipulations.dll	rundll32.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\server\Xusage.txt	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\README.txt	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.HEIFImageExtension_1.0.22742.0_x64__8wekyb3d8bbwe\Assets\StoreLogo.scale-150.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCalculator_10.1906.55.0_x64__8wekyb3d8bbwe\Assets\CalculatorAppList.contrast-black_scale-200.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\StopwatchSmallTile.contrast-white_scale-100.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.targetsize-72.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\1851_32x32x32.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\FetchingMail-Dark.scale-100.png	rundll32.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-libraryloader-l1-1-0.dll	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_neutral_split.scale-200_8wekyb3d8bbwe\Assets\GetStartedSplash.scale-200.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\Assets\WideTile.scale-150.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\models\en-US.Calendar.ot	rundll32.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\goopdateres_th.dll	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART1.BDR	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Xbox.TCUI_1.23.28002.0_x64__8wekyb3d8bbwe\AppxSignature.p7x	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\resources.pri	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebpImageExtension_1.0.22753.0_x64__8wekyb3d8bbwe\Assets\AppList.targetsize-256_altform-unplated.png	rundll32.exe
File created	C:\Program Files (x86)\Common Files\System\ado\instructions_read_me.txt	rundll32.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Pipes.AccessControl.dll	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftSolitaireCollection_4.4.8204.0_x64__8wekyb3d8bbwe\Win10\MicrosoftSolitaireAppList.targetsize-48_altform-unplated_devicefamily-colorfulunplated.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MSPaint_2019.729.2301.0_neutral_~_8wekyb3d8bbwe\AppxMetadata\AppxBundleManifest.xml	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxA-Generic-Light.scale-400.png	rundll32.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\goopdateres_ro.dll	rundll32.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XmlDocument.dll	rundll32.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\SourceAppService.winmd	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessDemoR_BypassTrial365-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxSpeechToTextOverlay_1.17.29001.0_neutral_split.scale-100_8wekyb3d8bbwe\Assets\GamesXboxHubSmallTile.scale-100.png	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\MSOUC_COL.HXC	rundll32.exe
File created	C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_neutral_~_8wekyb3d8bbwe\instructions_read_me.txt	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsCamera_2018.826.98.0_neutral_~_8wekyb3d8bbwe\AppxSignature.p7x	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.XboxApp_48.49.31001.0_x64__8wekyb3d8bbwe\Assets\GamesXboxHubAppList.targetsize-64_altform-unplated.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\AlarmsAppList.contrast-black_targetsize-256.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\HxMailAppList.scale-125.png	rundll32.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_pwa_launcher.exe	rundll32.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\it-IT\PhotoAcq.dll.mui	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ppd.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Retail-ul-oob.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\Assets\GetStartedAppList.targetsize-36.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.VCLibs.140.00_14.0.27323.0_x64__8wekyb3d8bbwe\msvcp140_app.dll	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsMaps_2019.716.2316.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\sdxhelper.exe.manifest	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.ScreenSketch_10.1907.2471.0_x64__8wekyb3d8bbwe\Assets\ScreenSketchSplashScreen.scale-200_contrast-black.png	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\1033\LyncBasic_Eula.txt	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.scale-80.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Wallet_2.4.18324.0_neutral_~_8wekyb3d8bbwe\AppxBlockMap.xml	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-stdio-l1-1-0.dll	rundll32.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp-ul-phn.xrm-ms	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\1851_40x40x32.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\images\Dismiss.scale-80.png	rundll32.exe
File opened for modification	C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.147.37\msedgeupdateres_mi.dll	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteSectionGroupMedTile.scale-150.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\images\OneNoteSectionGroupSmallTile.scale-150.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WindowsAlarms_10.1906.2182.0_x64__8wekyb3d8bbwe\Assets\TimerSmallTile.contrast-white_scale-200.png	rundll32.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\images\FileText32x32.png	rundll32.exe
File created	C:\Program Files\WindowsApps\Microsoft.MSPaint_6.1907.29027.0_x64__8wekyb3d8bbwe\CoreEngine\instructions_read_me.txt	rundll32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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

Processes:

rundll32.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe

Modifies registry class 3 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb\DefaultIcon	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.mmpt0z3lb\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 1156 wrote to memory of 1376	1156	rundll32.exe	rundll32.exe
PID 1156 wrote to memory of 1376	1156	rundll32.exe	rundll32.exe
PID 1156 wrote to memory of 1376	1156	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\05ebae760340fe44362ab7c8f70b2d89d6c9ba9b9ee8a9f747b2f19d326c3431.dll,#1
  2⤵
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:1376

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\instructions_read_me.txt

Filesize
1KB

MD5
a1858e97c794b6dd91c84c4117972a63

SHA1
e0166104ea97fc4dd52349113ac1eb2047b237e5

SHA256
bb3b4e779a5f43494e237b1979f0eddc9beb0a2a7c1e0b451a32c77795f1a58e

SHA512
da4a96ba2e3078b14784496af289097a8a0d21bc8486627c932c48bacc9e05d3837c671526f0f1d3f679c14e4a2bc1fd6b3a3196233e5fb194a7e2a8a029c9e1

Download Submit

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads