Analysis
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max time kernel
150s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20250502-en -
resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system -
submitted
29/05/2025, 11:58
Behavioral task
behavioral1
Sample
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Resource
win11-20250502-en
General
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Target
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
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Size
133KB
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MD5
d01f29ca822ea6d0b65d4997aa8252a9
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SHA1
e3800ae952beed650dd328008460d730395d21f7
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SHA256
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d
-
SHA512
b2614f72ab9299e3bff94e6a2c8684d8733d4373c67b2d3b254f257109d25044d9eb392478c9efa708b00492f36f51c2faec70a6ab7c5bf334dbb8d845e2a6a7
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SSDEEP
1536:s7ZppApdIIXJUDJUzreQvow2GIIXJUDJUzreQvowe:spWp1reVwDreVwe
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 4 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/memory/1732-0-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu behavioral1/files/0x000700000002367b-2.dat family_cosmu behavioral1/files/0x000300000001f0de-6.dat family_cosmu behavioral1/memory/1732-676-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (4867) 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\MEDIA\COIN.WAV.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\System\fr-FR\wab32res.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\System.Configuration.ConfigurationManager.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\access-bridge-64.jar.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-file-l2-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTest-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Office.Interop.Outlook.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.ReportDesign.Forms.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\System\ja-JP\wab32res.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-conio-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-180.png.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\sr-Cyrl-RS\msipc.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\es-ES\tipresx.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrcommonlm.dat.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Google\Chrome\Application\chrome_proxy.exe.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Constantia-Franklin Gothic Book.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\7-Zip\Lang\cy.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Private.CoreLib.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.Tasks.Parallel.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\bin\extcheck.exe.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-pl.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\WordNaiveBayesCommandRanker.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-180.png.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\chrome_installer.log.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp5-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\bwcapitalized.dotx.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.VisualBasic.Core.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019MSDNR_Retail-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrenUSlm.dat.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.Design.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Client\AppvIsvSubsystems32.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-white_scale-100.png.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN044.XML.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\PROOF\MSGR8FR.LEX.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\fi-FI\tipresx.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\auxpad\auxbase.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Numerics.Vectors.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-libraryloader-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\resources.jar.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.osmmui.msi.16.en-us.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-pl.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\ClientOSub_eula.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsfra.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\System\Ole DB\es-ES\sqloledb.rll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\content-types.properties.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Grace-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-80.png.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Accessibility.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-convert-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Compression.Native.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\PresentationFramework.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_Grace-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_PrepidBypass-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Parallel.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\hostpolicy.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Xaml.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.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 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe"C:\Users\Admin\AppData\Local\Temp\59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1732
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
133KB
MD53e890b606efa6ee02c254405e39435c6
SHA167d4d8f1e70c48c6492c7bd14fcd953e8b0e9a6f
SHA25617126e00fe33b713ec900501959fde295929b5d9cc42ca30d28ea83d0804c169
SHA5129fd345b1c8a97eb0a3fcf5c0388251dff340c8941d05ddf2bed6b9c9febf83f72e67d588a49a630869fa20f587e4fd031aa7c811cc721b76251f2402a7b97783
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Filesize
214KB
MD5f6f775706bf66b17c531efe07df2ef1e
SHA1f3c3f36c9de31fc6b7a852d054e1d28a986c2e08
SHA2561e939fd3539b682727d207ad772a7a0527aa68e38404df810ba827039a4daa29
SHA512d8e179ee7d3568e0f8d1772187a9550d3134be13fce83212bf83ac4d9f7bb95b1069ca7f2f3c74f2631c1d6ecade4c110ac46226c07c48ae7ef76b9a8e66ce80