Analysis Overview
SHA256
2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d
Threat Level: Known bad
The file 2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d was found to be: Known bad.
Malicious Activity Summary
Cosmu
Cosmu family
Detects Cosmu payload
Renames multiple (5160) 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
2025-05-29 10:01
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-05-29 10:01
Reported
2025-05-29 10:04
Platform
win10v2004-20250502-en
Max time kernel
150s
Max time network
136s
Command Line
Signatures
Cosmu
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Renames multiple (5160) files with added filename extension
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Numerics.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Intrinsics.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.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\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.Diagnostics.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\UIAutomationClient.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\System.Security.Cryptography.Pkcs.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-heap-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_MAK-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\PSRCHPHN.DAT.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ExcelTellMeOnnxModel.bin.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PROOF\MSHY7ES.LEX.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\ko.txt.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\PresentationCore.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework-SystemCore.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\ONGuide.onepkg.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\Graph.exe.manifest.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-80.png.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\lib\flavormap.properties.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\Checkmark.White.png.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.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\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.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\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-localization-l1-2-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\fr.txt.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\sr-spl.txt.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\et-EE\tipresx.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\de\System.Windows.Forms.Design.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\dt_shmem.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Grace-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_KMS_Client-ul.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\ipsdeu.xml.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.Primitives.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\WindowsFormsIntegration.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.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\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\WindowsFormsIntegration.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xerces.md.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription1-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Windows.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.FileSystem.Watcher.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationCore.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Input.Manipulations.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\System.Windows.Forms.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\javap.exe.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\UIAutomationClient.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\legal\javafx\webkit.md.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProPlusMSDNR_Retail-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.Loader.exe.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\System.Windows.Input.Manipulations.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\legal\jdk\xerces.md.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_KMS_Client-ul.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe.manifest.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Serialization.Formatters.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\hostpolicy.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\decora_sse.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\lib\deploy\[email protected] | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Printing.dll.tmp | C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.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\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe
"C:\Users\Admin\AppData\Local\Temp\2af938ddfec882e3cf440c2d57f251bba7794317042bc65392bd7b302b0bc07d.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | 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 |
| NL | 142.250.27.94:80 | c.pki.goog | tcp |
Files
C:\$Recycle.Bin\S-1-5-21-1153236273-2212388449-1493869963-1000\desktop.ini.tmp
| MD5 | 47b312b944c7766e8e2051c0d838a8cc |
| SHA1 | dcc5c5fda9cb54719000ea8fcba5a1293511076e |
| SHA256 | 87b07124002e7a3a127db5a7915bf1f40d5a4179aab1ccd2ecdc4326cfcae4da |
| SHA512 | 46b07b0252bdfa2b367fdd6c62ba99a9af851fcebc9a8061ff16887eef9cbf0b1796f291cd6a9a28a9496c505f15fcf379e50f384ab4cd9a707256138013f585 |
C:\f518c2ae32873fab6fcffcc19027\2010_x64.log.html.tmp
| MD5 | f39956b5c91613f562edf0c708541ee4 |
| SHA1 | a79a82aea2dfaa86d8420e180f17fa1fcebc88d5 |
| SHA256 | c2f7aeb030e522fd317b0167f462ba2edbb22f12e156b7d8ff996c0863744be1 |
| SHA512 | c09cfe2f0d1a4250d6d0f3f90cac76c8c88cabbc21f577e81e4eb3537a34d08c5980033600218b1b9b4be99960ed32eea04ade551c2cdd93d0be18d52ce80fd6 |
memory/5464-795-0x0000000000400000-0x0000000000407000-memory.dmp