Analysis
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max time kernel
149s -
max time network
137s -
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
65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe
Resource
win10v2004-20250502-en
General
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Target
65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe
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Size
100KB
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MD5
01cdf80c07c90c2552680fefa2f96ca9
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SHA1
1106093e1e75637dee381dbf92dd5ff659101dfa
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SHA256
65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52
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SHA512
f8af356360c719884aa4e6d7e5fb727a10a5e2f1fb6643e5020f927867b5a9eac76f7d390d3872bfd759a2f805d2dc6345fa19258939e47e00c42668de0d9ea5
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SSDEEP
3072:spWpW+ocbmMSIBSFHQi8bLRCw/UnElCD+kffteA05afFk/cs2/w+0Yomxgr42v1J:Ngynx
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/0x0004000000023233-1.dat family_cosmu behavioral1/files/0x000300000001f0d5-5.dat family_cosmu -
Renames multiple (4839) 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\ExcelInterProviderRanker.bin.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Common Files\System\Ole DB\msdasqlr.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\zlib.md.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial2-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ul-phn.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\tr\msipc.dll.mui.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Common Files\System\Ole DB\de-DE\oledb32r.dll.mui.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jre-1.8\lib\fonts\LucidaSansDemiBold.ttf.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Orange Red.xml.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordVL_KMS_Client-ul.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\System.Security.Cryptography.ProtectedData.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial1-pl.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp5-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_K_COL.HXK.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLPROXY.DLL.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.AppContext.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.Primitives.resources.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-convert-l1-1-0.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\fre\StartMenu_Win8.mp4.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-pl.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordR_OEM_Perp-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-black_scale-100.png.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationNative_cor3.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Internet Explorer\SIGNUP\install.ins.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\prism_d3d.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\joni.md.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jre-1.8\lib\security\java.security.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Grayscale.xml.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail2-ul-phn.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\Microsoft.VisualBasic.Forms.resources.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019DemoR_BypassTrial180-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019DemoR_BypassTrial180-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_MAK_AE-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\MSOUC_F_COL.HXK.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Office.Interop.Excel.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\1033\SFMESSAGES.XML.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-synch-l1-1-0.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.NETCore.App.deps.json.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.AccessControl.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\System.Xaml.resources.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN026.XML.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Security.Cryptography.Primitives.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\de\ReachFramework.resources.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_SubTrial-ppd.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Office.PowerPivot.ExcelAddIn.tlb.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Office16\ONBttnIE.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.CompilerServices.VisualC.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-string-l1-1-0.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\fxplugins.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jdk-1.8\legal\jdk\jopt-simple.md.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Integration\SPPRedist.msi.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_KMS_Client-ul.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-pl.xrm-ms.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Java\jre-1.8\lib\meta-index.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glossy.eftx.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Collections.Concurrent.dll.tmp 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.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 65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe"C:\Users\Admin\AppData\Local\Temp\65349d39466a2429eb00219c14c4458691f35198423b5e6ee268eaeefb2e0c52.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:5764
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
100KB
MD5525c7210e41d12f93150a23cba336bc0
SHA1cfc27b79b5f38e1f75dba9d4bce9a1953b165ca5
SHA256f05c9246dc809a7a1e0d7aab3ffc3079bcb154b8c3b95feaf6950eead92c8179
SHA512efadbba0abebe80d5a8d62e2509b6ac259c3fac04082f9e7f6310b861bc98bfb9c6cdb0905be3015218ff5840c46a7ec2562c56b16535c3690dcc9dc7e9eed21
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Filesize
181KB
MD519bef3ecc2afc72fc919a9410bdc2c17
SHA12269faa31c0b323db620031cd2edfe5bdde278a2
SHA2568ba8e187f2e47ee8da7dc8158237c23956ad21368099d9490f96c98e1b81f975
SHA51276a542dbd3840fee67acf487ed9391ca720ce8ba07634cf1d06f561cbbd05e87a9378145a0b306587af97d02538d3bcfef9768b30bd4c7a36f341e1c89ba9163