Analysis
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max time kernel
150s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20250502-en -
resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system -
submitted
05/06/2025, 08:15
Behavioral task
behavioral1
Sample
035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe
Resource
win11-20250508-en
General
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Target
035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe
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Size
22KB
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MD5
4d072e3966ff1328f1e37b0358f85476
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SHA1
1b8b11bb47169cb3ac0db99ee982c1d013624cf0
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SHA256
035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d
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SHA512
cdb0ef28de61a8a50de206a0a874c1e533423b302dc1e0e0da6d697678a971da9e28392fc0c93001f7e718ee591b28b0b1b835e8238261344d9e662cda623e9a
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SSDEEP
384:gBt7Br5xjL9AgA71FbhvP/KWLsqmFae+rOAqmFae+rOiOZ2OZoaqyklYWynDyklM:s7BlpppARFbhdLz8ae+rOn8ae+rOka5i
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/files/0x0008000000024242-1.dat family_cosmu behavioral1/files/0x000400000001ee99-5.dat family_cosmu -
Renames multiple (5309) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrfrash.dat.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.Primitives.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Runtime.Serialization.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationProvider.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Microsoft.Win32.Registry.AccessControl.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\notification_helper.exe.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-util-l1-1-0.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ul-phn.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Common Files\microsoft shared\ink\InkObj.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.Serialization.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_CN.properties.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_TW.properties.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\meta-index.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription5-ul-oob.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_MAK-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.HttpListener.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\ReachFramework.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Grace-ul-oob.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Retail-ul-phn.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordR_Grace-ul-oob.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Core.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.ValueTuple.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\System.Windows.Forms.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jre-1.8\bin\jsoundds.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp-ul-phn.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-phn.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Excel.ReportingServices.QueryDesigners.Extensions.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-white_scale-100.png.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\mip_core.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Common Files\System\ado\de-DE\msader15.dll.mui.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Spatial.NetFX35.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\ca.pak.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-1-0.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusE5R_SubTrial-pl.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jre-1.8\bin\jsdt.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jre-1.8\legal\javafx\directshow.md.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail3-pl.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Trial-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL027.XML.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\react-native-win32.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.ComponentModel.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\cldr.md.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationTypes.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\UIAutomationClient.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\System.Windows.Forms.Design.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Internet Explorer\en-US\hmmapi.dll.mui.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_MAKC2R-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\LibCurl64.DllA\OpenSSL64.DllA\openssl64.dlla.manifest.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN097.XML.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Input.Manipulations.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\System.Windows.Input.Manipulations.resources.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-ul-phn.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_Retail-ppd.xrm-ms.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Microsoft Office\root\rsod\onenotemui.msi.16.en-us.tree.dat.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\7-Zip\License.txt.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Common Files\System\Ole DB\oledb32r.dll.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe File created C:\Program Files\Java\jre-1.8\lib\psfontj2d.properties.tmp 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe"C:\Users\Admin\AppData\Local\Temp\035f93695a50583c38d9a608ba3f3f3465119c31821e16384dc2579a49794e5d.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3852
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
22KB
MD526bb7204537068f6645989a418595e17
SHA1513c0c25f4bd4b03de15299431f3c4a55309b3b6
SHA2562824d40239ae6e03c1a8f4c7e7fdf7cf8b9f81b352a6cb616dce8e002ce85057
SHA512e9702145a523969cf2bdc526be7dd3ebe6d3a2000d115481e31b50afbe62d7e9a9d545049547cacd31d588bb8da4e39e135696ace9446d494d362b0b4a7dc064
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Filesize
108KB
MD578ff529d351832a3a9788b8475fc16a8
SHA176ae97910b37009839d5858e74da1a13e48be7c5
SHA256f4c6419ab71b4ab0950dc831b1c07e160f19ccb00be799518e4ed1faeed39820
SHA51273ffecd550cb5fd086a50ce37e3b91ee69e9e06d410a496335409126fced5b016ed7721642b2131631372b7a24b2636460f7fcdee0dda0fce751363a3a770d13