Analysis Overview
SHA256
da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5
Threat Level: Known bad
The file da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5 was found to be: Known bad.
Malicious Activity Summary
Cosmu family
Detects Cosmu payload
Cosmu
Renames multiple (4951) 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
2025-06-05 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
150s
Max time network
139s
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 (4951) files with added filename extension
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Microsoft Office\root\Office16\MEDIA\VOLTAGE.WAV.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL011.XML.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ReachFramework.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\OFFICE16\Office Setup Controller\pidgenx.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.DataIntegration.FuzzyMatchingCommon.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\MSIPC\th\msipc.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Forms.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\System.Xaml.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glow Edge.eftx.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Retail-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\linesdistinctive.dotx.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\es-ES\TipRes.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\System\ado\msado28.tlb.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\PresentationFramework.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0018-0409-1000-0000000FF1CE.xml.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectProMSDNR_Retail-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pl-pl.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Core.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\DirectWriteForwarder.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_OEM_Perp-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectProDemoR_BypassTrial180-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql120.xsl.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\System\ado\en-US\msader15.dll.mui.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-process-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\OFFSYML.TTF.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\mr.txt.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Sockets.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationProvider.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-2-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Blue Warm.xml.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH_F_COL.HXK.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\1033\SQLENGINEMESSAGES.XML.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\OneNote\prnSendToOneNote.cat.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Loader.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\UIAutomationTypes.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\legal\javafx\libxslt.md.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\io.txt.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\is.txt.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.DataAnnotations.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Sockets.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\System.Windows.Forms.Design.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\UIAutomationProvider.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\UIAutomationClientSideProviders.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.hi-in.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.Windows.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Diagnostics.EventLog.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\D3DCompiler_47_cor3.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework.Royale.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\lib\cmm\sRGB.pf.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Trial-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\dt_socket.dll.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.exe
"C:\Users\Admin\AppData\Local\Temp\da3aac9e5bbabfadd5fcfa5169dc151e4be023f88c8f39260cfda6284a0b9ce5.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-1-5-21-186956858-2143653872-2609589082-1000\desktop.ini.tmp
| MD5 | ca0e61703cc64da43fc0c4ba7c03ef4e |
| SHA1 | c73ec86751cc10b153ea2075f4959e5d8f5a8b70 |
| SHA256 | 437d55313af7a9f38109cd899fbab1e44ef2b76b2ddf2b82dd389d250e00be50 |
| SHA512 | cfd1cc53ce80ffd00225daf606c663558c2026b47df7ccfc5cacea183aea3e8e31abeda602786c06fc5e0f808538c78d6a858230407f3b0f6e45ad26b4080723 |
C:\d962f70874f5d4bfc1c6\2010_x64.log.html.tmp
| MD5 | e112c8ad0fa9e3fb859191c3977a964e |
| SHA1 | 6c934a05256e78457940cb6e3c01e81d3a7438ac |
| SHA256 | 8957985095f3cde55c05132547c5c0535e78a9d30f2f75df043eb81d64d07c79 |
| SHA512 | c750515b49e78665847eb64e6bd5c226d52c5ea41e578ce9c5f82168e19568b3241925b705e3f7f7e2df3eef0b26076ad8e742107cb579db39f9b2a6f95ce6cc |