Analysis
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max time kernel
150s -
max time network
102s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
29/05/2025, 10:01
Static task
static1
Behavioral task
behavioral1
Sample
1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe
Resource
win11-20250502-en
General
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Target
1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe
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Size
66KB
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MD5
cd658d188b84374422d8941d05503cc5
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SHA1
4fd03294e2eb761d99cbee2b006d25c3f891729e
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SHA256
1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3
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SHA512
5c221820da29899167c39b70f3281ad12168f4c3d1fe44814fa35b9ded491c5c40abdee5bd4876f5538bd15d1e0899323b52927b28015794e7e38206a2cb2987
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SSDEEP
384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOIW2JhuC2JhuOxAxoraygJmMvJvx:uZ4FLz8ae+rOn8ae+rOoJhiJhY9
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/memory/2572-1115-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (5198) 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\Licenses16\ProPlusR_OEM_Perp5-ul-phn.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\zh-Hant\System.Windows.Forms.Primitives.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.PowerBI.AdomdClient.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscordaccore_amd64_amd64_7.0.1624.6629.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.FileSystem.DriveInfo.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\cs\ReachFramework.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jre-1.8\lib\deploy\[email protected] 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Office 2007 - 2010.xml.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcp140.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\classlist.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\nl\msipc.dll.mui.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Algorithms.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-multibyte-l1-1-0.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription1-pl.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_MAK-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN027.XML.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\7-Zip\Lang\zh-tw.txt.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.Primitives.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-pl.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\Edit.png.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrenclm.dat.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Globalization.Extensions.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG_K_COL.HXK.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\PPCORE.DLL.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2R32.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationProvider.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-console-l1-1-0.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_MAK-pl.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.SPClient.Interfaces.DLL.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\CancelFluent.png.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pt-br.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\WindowsFormsIntegration.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\et.pak.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\hu.pak.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\lpklegal.txt.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvSubsystemController.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_Trial-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_BypassTrial180-ppd.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-ppd.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_OEM_Perp-pl.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Grace-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jre-1.8\bin\policytool.exe.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-ppd.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019MSDNR_Retail-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ppd.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial5-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Retail-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\1033\SQLENGINEMESSAGES.XML.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\HintBarEllipses.16.White.png.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\WindowsFormsIntegration.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsFormsIntegration.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\javafx\glib.md.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial2-ul-oob.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\VISUALIZATIONCHARTCOMMON.DLL.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\CENTURY.TTF.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.CompilerServices.VisualC.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Primitives.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ppd.xrm-ms.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\offsymk.ttf.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Runtime.Numerics.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\PresentationCore.resources.dll.tmp 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.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 1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe"C:\Users\Admin\AppData\Local\Temp\1705207dec682ebd7df90665c61d3283a7c3ec84ae3fe21cdda0c940601855a3.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2572
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
66KB
MD566584af05b60699e3403c844398c8a7b
SHA1e61542abe47c50bd59f9ff431d56e9183cfee83f
SHA256ebb600442cd19514116c100e117574ba4a4599e99d49c3e4bb278d3b7ec75a44
SHA512d1a10402a5502b5e004d6a9acc0e04b65b06746f2c82b173d1223f1fc3b267eabf4285b6e4916e0e347815e8f6cc99bab1620661648ac713839c333c2a964963
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Filesize
147KB
MD5b879adac87900feb0a4da7e92110b2d8
SHA16d32cef9e30e4818cc9daa418a76dd2ffbd9ed84
SHA2567cabe3ad3bc0006e971237355ec23269cea623c6018b5949d7e05cd620fe70fe
SHA512b8ecd0aae3496a09f9982fdac7fec5c5b77ca7150c767bc1d4d84946b15966fc325358cb6a982f46b0787a09f8b368439a537c12388899089bde7d4ac3cb5b19