Analysis
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max time kernel
149s -
max time network
139s -
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, 08:18
Static task
static1
Behavioral task
behavioral1
Sample
5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe
Resource
win10v2004-20250502-en
General
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Target
5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe
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Size
32KB
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MD5
0854aa6022c7d4bae549983f48c03fb1
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SHA1
ce331d2fb5afda40af4f156bbc851b02a18ffc64
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SHA256
5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730
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SHA512
5e21c53aca0a8d41aa4c0f1c5e95c1003decc734762d4ed5efbd0dbd6be92ed40fd01ac673e2588915a36b514c18132d787fe83800097515ccb873896bd03efd
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SSDEEP
384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOYE/AE/DZKNZKy71j:uZ4FLz8ae+rOn8ae+rOrZkZ/71j
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 behavioral1/memory/1040-787-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (5197) 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\Common Files\microsoft shared\VSTO\vstoee.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Annotations.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ul-oob.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_KMS_Client_AE-ppd.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\en\LocalizedStrings.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-140.png.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\MSYUBIN7.DLL.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-file-l2-1-0.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub_eula.txt.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\api-ms-win-core-localization-l1-2-0.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvApi.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-string-l1-1-0.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jre-1.8\bin\verify.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jre-1.8\lib\logging.properties.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessRuntime2019R_PrepidBypass-ppd.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVPolicy.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsen.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\UIAutomationProvider.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\ThirdPartyNotices.txt.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\ucrtbase.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-ul-phn.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL016.XML.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\WindowsBase.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail-ul-phn.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxbgt.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.CoreLib.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0409-1000-0000000FF1CE.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteFreeR_Bypass-ul-oob.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-white_scale-180.png.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\ONENOTE.VisualElementsManifest.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\i640.cab.cat.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-locale-l1-1-0.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Retail-ul-oob.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest5-pl.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-ppd.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\DBGHELP.DLL.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\7-Zip\Lang\si.txt.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Security.Claims.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Templates\Presentation Designs\Maple.gif.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\System.Xaml.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-ul-phn.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-phn.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\GARA.TTF.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Threading.AccessControl.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCallbacks.h.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-pl.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Common Files\microsoft shared\ink\tipresx.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Metadata.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\UIAutomationTypes.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\uk.pak.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ul-oob.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTest-pl.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-ul-oob.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-black_scale-100.png.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Windows.Forms.resources.dll.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial-ppd.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL115.XML.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL121.XML.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Grace-ppd.xrm-ms.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Median.xml.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\GR8GALRY.GRA.tmp 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.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 5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe"C:\Users\Admin\AppData\Local\Temp\5934cff0f61cddf065e22f543aeb40ec01239be80303e810b4eb324425579730.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1040
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
33KB
MD569ec2f997c5b3d6c07d361b18b674319
SHA1a500149b3e9771fbe8c654c689c264d69d557e03
SHA256f4361bc0c8e52c27d3b5e8c063a932537b0df5f883eddc752ef6a2b9c7402374
SHA5122944b5aacd3e172f6c1046f5de52c021e523041c59d4c230574293997d9af80ab3c9f050a33b512b34763f85f0f51132fdc779297a63196a29ee032edeed3056
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Filesize
113KB
MD5704f11eec3c8a26caecdf92247dc092d
SHA1c266bfec600d6094c87e35a9be16658698f7abe1
SHA256eded191eefc09cde346da2b748448b789136ac14f1eb4b7bacc7b9ddac758b7a
SHA5128a816bc69bfa78acfd96373a255a234f7a79b550767d1cf872ce50b8e6ac940253fcc8c9ddefdde666e6e915d6a379049ff95f57a527db2f226cd33d91419225