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
05/06/2025, 08:18
Behavioral task
behavioral1
Sample
2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe
Resource
win10v2004-20250502-en
General
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Target
2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe
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Size
36KB
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MD5
76174bab38f45c18422defca74ea8b3d
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SHA1
f499a0c929d81c05d7c51f6fbdf389e89c16a6c4
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SHA256
2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4
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SHA512
6a67409ef9a2d98ff2ef1d98be763c066e36b24708c2a682ff397247484bd03539eaafac3d1f62e9e9d609bacbf55fd1931e4c6fb5d86a7603ce7238f311ceba
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SSDEEP
768:s7BlpppARFbhdLz8ae+rOn8ae+rO2aNQP+UDQvCJO:s7ZppApdIIJQP+UDQv7
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/0x000800000002423c-1.dat family_cosmu behavioral1/files/0x000300000001f0d5-5.dat family_cosmu -
Renames multiple (5043) 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\Java\jdk-1.8\bin\jconsole.exe.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\NL7MODELS000C.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN010.XML.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\default_apps\external_extensions.json.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\zh-TW.pak.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\prism_common.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest2-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-ppd.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-ul-oob.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\System.Web.Mvc.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\System\msadc\msadcor.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\System\Ole DB\sqlxmlx.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\ReachFramework.resources.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-errorhandling-l1-1-0.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-phn.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_MAK_AE-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-white_scale-140.png.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-80.png.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l1-2-0.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.DataAnnotations.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\PresentationUI.resources.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Threading.AccessControl.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial2-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordR_Trial-ppd.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\lpc.win32.bundle.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.scale-180.png.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\PresentationUI.resources.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\dtplugin\deployJava1.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jre-1.8\bin\dt_socket.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_KMS_Automation-ul.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office15\pidgenx.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\MYSL.ICO.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\System\Ole DB\oledb32r.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\jre\README.txt.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-ppd.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Retail-ul-phn.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART12.BDR.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipscat.xml.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\sqlxmlx.rll.mui.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l1-2-0.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.resources.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\de.pak.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\VisualElements\SmallLogoDev.png.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusMSDNR_Retail-ul-oob.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.contrast-white_scale-140.png.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\PersonaSpy.html.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\PPRESOURCES.DLL.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\jmc.txt.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Grace-ul-oob.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\sdxs.xml.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\netstandard.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Globalization.Extensions.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.TypeExtensions.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\cursors.properties.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ul-oob.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Internet Explorer\IEShims.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Java\jre-1.8\lib\hijrah-config-umalqura.properties.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTrial-pl.xrm-ms.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Microsoft Office\root\Office16\EntityDataHandler.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.uk-ua.dll.tmp 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.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 2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe"C:\Users\Admin\AppData\Local\Temp\2c05e3341362b0581f72dc9f94247d40654cc379996f4e0f8a88423d5a3fb0c4.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4768
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
37KB
MD5f46cc6e53805e2d155476074297d5b70
SHA140ef949a597709d59fb77e750d3db890cc00b568
SHA25637e4bf6804adead167f2df189e754f29f9e4f984f7bd500973672b0b9313669b
SHA512b2d7e1c582c88f18ca74e235a41a004e96ff5873afa4a88919c45183efd267ae2d1e69817865b411916b0337cc44f76237d97c8a3ef9bfe41e5766a630e35aef
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Filesize
118KB
MD50cc1dc362b81f5243de1df8af03bfd68
SHA11d939d251e7db216984a3f93df72fc4a580c2675
SHA2562a6adfd6cfcd3a049457f276c462906a03a057eee3bb2af9e203e82a48eb13c9
SHA51249df1052fabfb72c259f2dbce51e7d9deb88a1356caa903131e5a1805358d6ce061405226bf19927c00689a2c088b02b30f283286b6d4f895941bb35904c3a15