Analysis Overview
SHA256
6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740
Threat Level: Known bad
The file 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740 was found to be: Known bad.
Malicious Activity Summary
Cosmu
Cosmu family
Detects Cosmu payload
Renames multiple (4853) files with added filename extension
Drops file in Program Files directory
System Location Discovery: System Language Discovery
Unsigned PE
MITRE ATT&CK
Enterprise Matrix V16
Analysis: static1
Detonation Overview
Reported
2025-05-29 11:55
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
2025-05-29 11:55
Reported
2025-05-29 11:58
Platform
win10v2004-20250502-en
Max time kernel
150s
Max time network
142s
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 (4853) 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\8.0.15\es\Microsoft.VisualBasic.Forms.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glossy.eftx.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Trial-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PROOF\MSHY7EN.LEX.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Common Files\System\Ole DB\ja-JP\sqlxmlx.rll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationClientSideProviders.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\UIAutomationProvider.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Microsoft.Win32.Registry.AccessControl.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\PresentationFramework.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\legal\jdk\asm.md.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Integration\C2RManifest.OSM.OSM.x-none.msi.16.x-none.xml.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_MAK-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\7-Zip\7z.exe.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ClickToRun\SharedPerformance.man.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\PresentationCore.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_MAK_AE-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\OFFICE.DLL.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\7-Zip\descript.ion.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Globalization.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\PresentationUI.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\VisualElements\SmallLogoCanary.png.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial.xml.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\System.Windows.Controls.Ribbon.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\vk_swiftshader_icd.json.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_Subscription-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-black_scale-140.png.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\VSTO\10.0\1033\VSTOLoaderUI.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\legal\jdk\freebxml.md.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-localization-l1-2-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_Retail-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-localization-l1-2-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunmscapi.jar.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.scale-180.png.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\UIAutomationClientSideProviders.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationProvider.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Trial-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\WordVL_KMS_Client-ul.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_logo_small.png.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.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\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ExcelInterProviderRanker.bin.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-black_scale-80.png.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Diagnostics.EventLog.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\bci.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Trial-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.Serialization.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationUI.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.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\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Extensions.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.XmlSerializer.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemDrawing.dll.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xmlresolver.md.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\de.txt.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\is.txt.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\ko-KR\tipresx.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
| File created | C:\Program Files\desktop.ini.tmp | C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.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\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe
"C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.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 | 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 | 20b56da0f4f612bb4dbefdf28566c557 |
| SHA1 | ef245b71251b6d94bc6bf11b32910e8fadc72eda |
| SHA256 | e69ea636b997bceb49b603120100e35b62492596a34b4a4a0ba766a3ea6fa1e3 |
| SHA512 | ddfb061504d83c2a59e0185cca34f485991c3ad6b933e55cd53593877fe5d16e3aa7426e8ff89f2c0822faaa64c684b725599f3b69df7542c231f2cbb7313d35 |
C:\f518c2ae32873fab6fcffcc19027\2010_x64.log.html.tmp
| MD5 | b749f7526d32ea5192a8632ab8f93174 |
| SHA1 | a741b929be63f701eb0280cf5b4ff6f9f49edcc8 |
| SHA256 | 89b92699d4c73f68a8625fc1adddd947290b3f884922a990ab94e0b21dad3a79 |
| SHA512 | 8f8c61ddde911b61f2c03d9ddb05acdf38ecda146b62ec19a2079b4217db233dc92088a5b84365ed30d7bbe33bafd5dea8992c2ff62c2518b6ed00ab8a908a8a |