Analysis
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max time kernel
150s -
max time network
142s -
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, 11:55
Behavioral task
behavioral1
Sample
6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe
Resource
win10v2004-20250502-en
General
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Target
6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe
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Size
124KB
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MD5
712e8e248eadcadea6c4066912f56eee
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SHA1
ce907cf7953845c635e80a53dea37413d1d321bf
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SHA256
6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740
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SHA512
abd96f7f352f5612bf54edf3c32a0137990bcfad5a0a585467ce7140183a3f4ebb14f2a2d5e07c9b26c56e2624702dfe262f0e2bdcbf9e0babcde1d4d20c90d6
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SSDEEP
1536:s7ZppApdIIoJhiJhY3QICr7dG2JAh8Sh8Ge+AeQ7w9yyV8gcO:spWpYHySeA
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/0x00050000000227ba-1.dat family_cosmu behavioral1/files/0x000800000002426f-5.dat family_cosmu -
Renames multiple (4853) 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\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\Microsoft.VisualBasic.Forms.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glossy.eftx.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Trial-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\PROOF\MSHY7EN.LEX.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\sqlxmlx.rll.mui.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationClientSideProviders.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\UIAutomationProvider.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Microsoft.Win32.Registry.AccessControl.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\PresentationFramework.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\asm.md.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.OSM.OSM.x-none.msi.16.x-none.xml.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_MAK-ul-phn.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\7-Zip\7z.exe.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\SharedPerformance.man.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\PresentationCore.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_MAK_AE-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\OFFICE.DLL.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\7-Zip\descript.ion.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Globalization.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\PresentationUI.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\VisualElements\SmallLogoCanary.png.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial.xml.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-pl.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\System.Windows.Controls.Ribbon.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\vk_swiftshader_icd.json.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-pl.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_Subscription-ul-oob.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-black_scale-140.png.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Common Files\microsoft shared\VSTO\10.0\1033\VSTOLoaderUI.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Windows.Forms.Primitives.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\freebxml.md.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-localization-l1-2-0.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_Retail-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-localization-l1-2-0.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunmscapi.jar.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.scale-180.png.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\UIAutomationClientSideProviders.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationProvider.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Trial-pl.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordVL_KMS_Client-ul.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_logo_small.png.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\ExcelInterProviderRanker.bin.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-black_scale-80.png.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Diagnostics.EventLog.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\bci.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Trial-ul-oob.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.Serialization.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationUI.resources.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ul-oob.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Subscription2-ul-oob.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Extensions.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.XmlSerializer.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemDrawing.dll.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xmlresolver.md.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\7-Zip\Lang\de.txt.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\7-Zip\Lang\is.txt.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\Common Files\microsoft shared\ink\ko-KR\tipresx.dll.mui.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe File created C:\Program Files\desktop.ini.tmp 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.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 6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe"C:\Users\Admin\AppData\Local\Temp\6f977507c2351c072005e4d0e5a2d07b262b25b239f326cebf5931870b24f740.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3236
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
125KB
MD520b56da0f4f612bb4dbefdf28566c557
SHA1ef245b71251b6d94bc6bf11b32910e8fadc72eda
SHA256e69ea636b997bceb49b603120100e35b62492596a34b4a4a0ba766a3ea6fa1e3
SHA512ddfb061504d83c2a59e0185cca34f485991c3ad6b933e55cd53593877fe5d16e3aa7426e8ff89f2c0822faaa64c684b725599f3b69df7542c231f2cbb7313d35
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Filesize
211KB
MD5b749f7526d32ea5192a8632ab8f93174
SHA1a741b929be63f701eb0280cf5b4ff6f9f49edcc8
SHA25689b92699d4c73f68a8625fc1adddd947290b3f884922a990ab94e0b21dad3a79
SHA5128f8c61ddde911b61f2c03d9ddb05acdf38ecda146b62ec19a2079b4217db233dc92088a5b84365ed30d7bbe33bafd5dea8992c2ff62c2518b6ed00ab8a908a8a