Malware Analysis Report

2025-08-10 20:09

Sample ID 250518-n4mpcsdj3z
Target 4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8
SHA256 4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8
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

4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8

Threat Level: Likely malicious

The file 4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8 was found to be: Likely malicious.

Malicious Activity Summary

discovery ransomware

Renames multiple (5335) 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

2025-05-18 11:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-18 11:57

Reported

2025-05-18 11:59

Platform

win10v2004-20250502-en

Max time kernel

150s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe"

Signatures

Renames multiple (5335) 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\MSInfo\fr-FR\msinfo32.exe.mui.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Internet Explorer\uk-UA\ieinstal.exe.mui.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-heap-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\lib\cmm\CIEXYZ.pf.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Office.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Forms.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-string-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription3-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH_COL.HXT.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jre-1.8\lib\ext\zipfs.jar.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\MSJHBD.TTC.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Common Files\System\msadc\msdaremr.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Common Files\System\wab32res.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.InteropServices.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscordaccore.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\javafx_iio.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\legal\jdk\xerces.md.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial4-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceModel.Web.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ul-phn.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Grace-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ul.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Common Files\microsoft shared\ink\ThirdPartyNotices.ja-jp.txt.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Encoding.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_Subscription-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\MSJH.TTC.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationClient.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\it\System.Windows.Controls.Ribbon.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\System.Windows.Input.Manipulations.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\fre\StartMenu_Win7.wmv.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Retail-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_MAK_AE-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\MSOSPECTRE.DLL.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemData.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\PresentationFramework.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOLoader.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\ReachFramework.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\vcruntime140_cor3.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\it\UIAutomationTypes.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\PresentationCore.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Grace-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.ReportingServices.Interfaces.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\System.Xaml.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\Microsoft.VisualBasic.Forms.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-stdio-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Grace-ppd.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-black_scale-140.png.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\OSFSHARED.DLL.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\7-Zip\Lang\cy.txt.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\relaxngom.md.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jre-1.8\bin\eula.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ul-oob.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_OEM_Perp-pl.xrm-ms.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\Office16\1033\EXCEL_F_COL.HXK.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\api-ms-win-core-file-l1-2-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\ReachFramework.resources.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A
File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-private-l1-1-0.dll.tmp C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.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\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe

"C:\Users\Admin\AppData\Local\Temp\4f8fff1eade9ef26fef0881e27fae158da5a8fc2bc6ce0128ba10d6e34780cf8.exe"

Network

Country Destination Domain Proto
GB 2.18.27.82:443 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 142.250.178.3:80 c.pki.goog tcp

Files

C:\$Recycle.Bin\S-1-5-21-2930597513-779029253-718817275-1000\desktop.ini.tmp

MD5 d1e2b49ca859f5dbcfdd2221f4db5a65
SHA1 cc134218086bc52c99d2b6cb37ae0c850532e0d3
SHA256 63abbdce5577d26cd9a8a21bbf8a4b708f878eb7e1d99a8024ed01bd88c7f330
SHA512 7306a6eaa437d5b8db255c6c1704509ae2a0982888a09e519521c742f0723e90c5024e6164ebd09ba4393b99370f09cd6672d92b3d66677ee5738b1ee1ad1545

C:\6479eedf55783993fe56765264\2010_x86.log.html.tmp

MD5 588a4c40fd36475be90312839286604c
SHA1 deb87556dc7dbd6bcb2fd00f4c314e77c037d94c
SHA256 eff702347b3adc4c47cf9ba91dfd4251cd0c850de1ee8cc85e91cc85efee528a
SHA512 f36a30986ad3bb3d11305e8c01db132b8cb0a153499dca5869e0839e4a8725f3f4d6497a94f68ecbd0f399ed94eb6b21f8522d4d764391f2e35d6d72ee215f50

memory/5400-817-0x0000000000400000-0x0000000000407000-memory.dmp