Analysis Overview
SHA256
121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9
Threat Level: Known bad
The file 121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9 was found to be: Known bad.
Malicious Activity Summary
Cosmu
Cosmu family
Detects Cosmu payload
Renames multiple (5124) 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
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
135s
Command Line
Signatures
Cosmu
Cosmu family
Detects Cosmu payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Renames multiple (5124) files with added filename extension
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019MSDNR_Retail-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_OEM_Perp-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN020.XML.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskpred\oskpredbase.xml.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\Extensions\external_extensions.json.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\TrebuchetMs.xml.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial1-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Grace-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_KMS_Client-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\zh-cn.txt.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Xml.Linq.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.IO.Packaging.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\zip.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_Subscription-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioStdXC2RVL_KMS_ClientC2R-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN107.XML.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\mscorrc.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Controls.Ribbon.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL026.XML.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\react-native-win32.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\VVIEWER.DLL.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Overlapped.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Common Files\System\msadc\msdarem.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\WindowsFormsIntegration.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial1-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\System.Drawing.Common.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\legal\jdk\cldr.md.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Integration\C2RManifest.dcfmui.msi.16.en-us.xml.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial1-ppd.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.XLS.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\lt.txt.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_OEM_Perp-pl.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ul-phn.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Forms.Design.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\jaas_nt.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\VISUALIZATIONCOMMON.DLL.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-runtime-l1-1-0.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\cardview-addtotable.png.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.h.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\lib\security\blacklist.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_K_COL.HXK.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\msoia.exe.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\ipsen.xml.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Reflection.Extensions.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationClient.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\133.0.6943.60.manifest.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\fr.pak.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\offsymk.ttf.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\mfc140u.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsFormsIntegration.resources.dll.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\es-419.pak.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\legal\jdk\pkcs11cryptotoken.md.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial3-ul-oob.xrm-ms.tmp | C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.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\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe
"C:\Users\Admin\AppData\Local\Temp\121f20c82d0c2e7fd44e6f52e78cc84ed80dca691a7a49a79796036a3d15c0f9.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.28.10:443 | g.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 | 8.8.8.8:53 | c.pki.goog | udp |
| NL | 142.250.27.94:80 | c.pki.goog | tcp |
Files
C:\$Recycle.Bin\S-1-5-21-2930597513-779029253-718817275-1000\desktop.ini.tmp
| MD5 | a216a250f2eb783641675ba12d89bdea |
| SHA1 | 2866599ea8b2b6542ba547bb79e49703f8fe09ab |
| SHA256 | 6a70d0b30e7eba1904ac641c46fe9171efc24b0a713978a879e9a1ee8c49324f |
| SHA512 | 452acdd610a1da3c7bd2a684edd1041471c4e6a77a4d62b1cb24d9308479cde80580763c69974173e03fb9b79060ed68bb29861bf71738356036f6babca0d497 |
C:\6479eedf55783993fe56765264\2010_x86.log.html.tmp
| MD5 | c80f6af449d4ac52255e610815b3e198 |
| SHA1 | db6ca86dcaf2ff82b17a4c19205f3c25c92dde1d |
| SHA256 | b6ffe87e5240acb3a0a35720ffc895cc091a06a643dc0045f30e28a61d515744 |
| SHA512 | 62e3edff9a5ed635aa2c2f756267f01696621a8f4d8f32637892ee725a3f75ceb9f9f669c176d717faed2de597a15ce52e0f8adc3d05638919a058585363a826 |
memory/4028-795-0x0000000000400000-0x0000000000407000-memory.dmp