Malware Analysis Report

2025-08-05 15:05

Sample ID 250519-qz9pfahj71
Target 303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf
SHA256 303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf
Tags
discovery ransomware
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf

Threat Level: Likely malicious

The file 303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf was found to be: Likely malicious.

Malicious Activity Summary

discovery ransomware

Renames multiple (5019) files with added filename extension

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-05-19 13:43

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-19 13:43

Reported

2025-05-19 13:45

Platform

win10v2004-20250502-en

Max time kernel

150s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe"

Signatures

Renames multiple (5019) files with added filename extension

ransomware

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskclearui.xml.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages.properties.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Common Files\microsoft shared\ink\ipsfin.xml.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.NameResolution.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\bin\javaw.exe.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\dnsns.jar.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jre-1.8\bin\javaws.exe.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019VL_MAK_AE-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\INTLDATE.DLL.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\mshwLatin.dll.mui.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Common Files\System\Ole DB\ja-JP\msdasqlr.dll.mui.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\unlimited\local_policy.jar.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\LockEnter.exe.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Cambria.xml.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\AccessR_OEM_Perp-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest1-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\UIAutomationTypes.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Microsoft.WindowsDesktop.App.runtimeconfig.json.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-phn.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusE5R_Subscription-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-white_scale-80.png.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Memory.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\ReachFramework.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Windows.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ExcelCtxUIFormulaBarModel.bin.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Common Files\System\msadc\msaddsr.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\DebugRequest.mov.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework-SystemData.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\UIAutomationClient.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\libpng.md.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL026.XML.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN011.XML.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Xaml.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\vcruntime140_1.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\PSRCHLEX.DAT.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\DataStreamerLibrary.dll.config.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\InstallerMainShell.tlb.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\7-Zip\Lang\pt-br.txt.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-synch-l1-2-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PenImc_cor3.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\de\ReachFramework.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\bin\rmid.exe.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jre-1.8\lib\deploy\ffjcext.zip.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\TipTsf.dll.mui.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\eventlog_provider.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Java\jdk-1.8\legal\jdk\jpeg.md.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription2-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_OEM_Perp-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.HostIntegration.Connectors.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\OFFSYM.TTF.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Input.Manipulations.dll.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\no\msipc.dll.mui.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN089.XML.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\NewComment.png.tmp C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe

"C:\Users\Admin\AppData\Local\Temp\303b367fdb3ba35a8a2cd2aed88fa7b8d4b17bf838fdb6dd3018c4da820968cf.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
FR 23.192.237.220:443 www.bing.com tcp
FR 23.192.237.220:443 www.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 216.58.201.99:80 c.pki.goog tcp

Files

C:\$Recycle.Bin\S-1-5-21-3674642747-2260306818-3009887879-1000\desktop.ini.tmp

MD5 a269feba316da1c65df14217bd63fb01
SHA1 e25a9aa93d3194ef255c76bdf08b6d415a0f8266
SHA256 1e5f3c0ff857e487e2559403ce696a2a92e1eaee5f936804d1b6be1f56e3e480
SHA512 8462550c65864e17287afe836244fd162118950e2cfe01a86168ed3433a8b45bee964047c79eabc690a9309bdf322fe807876086d2b5606f078da3ce1d6623db

C:\967f022c4c136664abfad56c1fb73a\2010_x86.log.html.tmp

MD5 d86e7f905ce6cff01aabf98a40a6b056
SHA1 621e23cdd12dad2a2b71d8a60088f06c04b8d35e
SHA256 cd5a9a3e0cb6eb377671f9ed7b9f960f537eceef8617e1fcc8fd6af89cbbe58e
SHA512 74c3ffff33802f0b99ac0394a1504a03a8a9283d53ac3b238324084cac2730f0c16b8bdb1dda68e715e0537ae32169cd92a26e9bf0d98ec42ce7f7806a0be202