Analysis Overview
SHA256
48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654
Threat Level: Known bad
The file 48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654 was found to be: Known bad.
Malicious Activity Summary
Detects Cosmu payload
Cosmu
Cosmu family
Renames multiple (5028) files with added filename extension
Drops file in Program Files directory
Unsigned PE
System Location Discovery: System Language Discovery
MITRE ATT&CK
Enterprise Matrix V16
Analysis: static1
Detonation Overview
Reported
2025-06-05 07:23
Signatures
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-06-05 07:23
Reported
2025-06-05 07:26
Platform
win10v2004-20250502-en
Max time kernel
149s
Max time network
135s
Command Line
Signatures
Cosmu
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Renames multiple (5028) files with added filename extension
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\ReachFramework.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\fr\ReachFramework.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_OEM_Perp-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\WordR_Trial-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\it-IT\tabskb.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_ghost_profile.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Common Files\System\ja-JP\wab32res.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Internet Explorer\ExtExport.exe.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Internet Explorer\ja-JP\ieinstal.exe.mui.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\MSIPC\cs\msipc.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Configuration.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\Microsoft.VisualBasic.Forms.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Yellow Orange.xml.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\WordR_OEM_Perp-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\mip_clienttelemetry.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\office.core.operational.js.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.FileSystem.Primitives.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-handle-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE_F_COL.HXK.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\PresentationUI.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-80.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.StackTrace.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\UIAutomationClientSideProviders.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\zh-Hant\WindowsFormsIntegration.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\security\blacklisted.certs.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-stdio-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.ServiceProcess.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp3-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH_K_COL.HXK.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-140.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\clretwrc.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.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\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_TW.properties.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription5-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Trial-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_SubTest-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-white_scale-140.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\legal\javafx\directshow.md.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Trial-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.reportviewer.winforms.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\TAG.XSL.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.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\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.Expressions.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\release.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\msoasb.exe.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTest-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-black_scale-80.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\bwclassic.dotx.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\MEDIA\BOMB.WAV.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000042\mecontrol.png.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Security.Cryptography.Pkcs.dll.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\legal\jdk\dynalink.md.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessEntryR_PrepidBypass-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe
"C:\Users\Admin\AppData\Local\Temp\48fcc0d0c84ae454ffc631274663046a7377e0765e407f73268d190f3ff64654.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| NL | 142.250.27.94:80 | c.pki.goog | tcp |
Files
C:\$Recycle.Bin\S-1-5-21-3674642747-2260306818-3009887879-1000\desktop.ini.tmp
| MD5 | 9686b65ffcd2bf1e8c749636555cf0c5 |
| SHA1 | d4fafdb7efbfc251e340e4ef6c909074b03ba0f1 |
| SHA256 | 3fcf59c57b9c611fb94cbf27c68864d3811e7cbbd368e8cb6ff3905f44392ecf |
| SHA512 | 05e588f85888341315fee7e3a690ec0feabf0071ad690188bf898991cfabfc4ad072559b19ba15f9c9435c73329f3052cf8f0e8e16df8c61e7b3f52e5ae0e473 |
C:\967f022c4c136664abfad56c1fb73a\2010_x86.log.html.tmp
| MD5 | b81f19b61a479e72559ff27160e2e8a2 |
| SHA1 | 26054f0bb6af14bd2d70d4e66219551f784b9413 |
| SHA256 | a2db4f5ffcf8baec227e9869b15112f5ae6211574e67c3a3e080620470061dd8 |
| SHA512 | 88cc07da73fce238d8fa4bfc2de6c60ed3f85b2365bcaa11f9a7e24a295233f7f551b116fc2b5aca4333b646f90d8756b146ab95b7d035f74ed304b66a0e71e5 |