Malware Analysis Report

2025-08-05 15:06

Sample ID 250519-qzwgtahj5v
Target c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a
SHA256 c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a
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

c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a

Threat Level: Likely malicious

The file c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a was found to be: Likely malicious.

Malicious Activity Summary

discovery ransomware

Renames multiple (5227) 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 13:42

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-19 13:42

Reported

2025-05-19 13:45

Platform

win10v2004-20250502-en

Max time kernel

150s

Max time network

143s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe"

Signatures

Renames multiple (5227) files with added filename extension

ransomware

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE_F_COL.HXK.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\ARIALNB.TTF.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\Microsoft.VisualBasic.Forms.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\msvcp140.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription3-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\personaspybridge.js.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PROOF\msth8EN.DLL.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.MemoryMappedFiles.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Forms.Design.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\UIAutomationProvider.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jre-1.8\bin\msvcp140_2.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\linesdistinctive.dotx.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX45.exe.config.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\bin\pack200.exe.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\sunmscapi.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial2-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-sysinfo-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.Requests.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Forms.Primitives.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ReachFramework.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Windows.Input.Manipulations.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\Microsoft.VisualBasic.Forms.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\WindowsBase.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Json.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\netstandard.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-localization-l1-2-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-006E-0409-1000-0000000FF1CE.xml.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\sbicuin58_64.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\cldrdata.jar.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\as90.xsl.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL010.XML.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Runtime.Extensions.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Accessibility.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationTypes.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Controls.Ribbon.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\bci.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifestLoc.16.en-us.xml.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-locale-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Security.Cryptography.Csp.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\it\UIAutomationClientSideProviders.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\System.Xaml.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_CopyDrop32x32.gif.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\WordVL_MAK-ul-phn.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Xaml.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\legal\jdk\xmlresolver.md.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial-Times New Roman.xml.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH_COL.HXT.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\offsymxb.ttf.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-memory-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ul-phn.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_KMS_Client_AE-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Common Files\System\msadc\es-ES\msdaprsr.dll.mui.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\UIAutomationClient.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceProcess.dll.tmp C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.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\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe

"C:\Users\Admin\AppData\Local\Temp\c3bd7c16da1af87ebb2f1664545a4a3c22ca99869895997c70cb3e6e3c836e0a.exe"

Network

Country Destination Domain Proto
DE 88.221.197.113:443 www.bing.com tcp
DE 88.221.197.113:443 www.bing.com tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 c.pki.goog udp
GB 172.217.16.227:80 c.pki.goog tcp

Files

C:\$Recycle.Bin\S-1-5-21-3690492401-2005096563-3427069815-1000\desktop.ini.tmp

MD5 414fc1f419577e596cfb1a37a59270d7
SHA1 4990789e4363514ec43487ebe4aa77b640cf533c
SHA256 2c042f0209460629487463cf555369e2edc71203fd68d20f12cc0ebb130f8015
SHA512 993b816c17c22521efdf479807cf32a1224919eae79c74f4d69f15489be31674f76f399eea5830ef953b7b4ae9076792feec67dddcb7464ae45030b2fb983ea4

C:\f32c6debfbe15d219b06a854\2010_x64.log.html.tmp

MD5 cb2faef812464ed76b920517e0c80833
SHA1 c6f7d0867d485ce39b3d53cba6953b0abe5826dd
SHA256 6a989b50253d2a3530b640c837694e616bdc5bdcc7c8ccf058ab5263b0eb373c
SHA512 c250adc81b1915a22ded483ed0ba42c9897ca2ca19b67edee801ae1642651ffadafc65b420a098b31bbfaa055dd408309d7996e5503f51755661d6ce7ab01421