Analysis
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max time kernel
150s -
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, 11:59
Behavioral task
behavioral1
Sample
684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe
Resource
win10v2004-20250502-en
General
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Target
684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe
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Size
33KB
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MD5
9e694f8ce782f063a8e2db0e0ca14bcf
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SHA1
747ee307b9b4f1f09e200c92f303501ceba0b7ce
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SHA256
684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130
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SHA512
5af5bc153e38edd80296b595b5acc9c855dee141dd8a4fd0620800b3b6203f21a56fba532295aa54a754a50072334f89ec5452b5f80b22eac38903ad435690fd
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SSDEEP
768:s7BlpppARFbhdLz8ae+rOn8ae+rO+4500n1kJ00n1k+qAEJBqAEJb:s7ZppApdII+49101d
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/0x0012000000023f31-1.dat family_cosmu behavioral1/files/0x000400000001ee9b-5.dat family_cosmu -
Renames multiple (5277) 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\ru\System.Windows.Forms.Primitives.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Median.xml.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Century Schoolbook.xml.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\System\msadc\es-ES\msadcer.dll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\System\Ole DB\es-ES\sqloledb.rll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\PresentationFramework.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\eventlog_provider.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jre-1.8\lib\deploy\messages_zh_HK.properties.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jre-1.8\lib\management\jmxremote.access.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial-pl.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_ViewOnly_ZeroGrace-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\7-Zip\Lang\io.txt.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\System\msadc\es-ES\msadcor.dll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceProcess.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Extensions.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jre-1.8\lib\deploy\messages_fr.properties.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Trial-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\LyncVDI_Eula.txt.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ink\mshwgst.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Numerics.Vectors.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\vcruntime140_1.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\meta-index.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jdk-1.8\legal\javafx\libxml2.md.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.OneNote.OneNote.x-none.msi.16.x-none.xml.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ppd.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\ShapeCollector.exe.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.NETCore.App.runtimeconfig.json.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessR_OEM_Perp-pl.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_K_COL.HXK.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Packaging.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOLoader.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PenImc_cor3.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-locale-l1-1-0.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Grace-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-pl.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.Reporting.AdHoc.Shell.Bootstrapper.xap.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN107.XML.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ink\de-DE\tabskb.dll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrdeslm.dat.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\Microsoft.VisualBasic.Forms.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\WindowsBase.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Trial-ppd.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-pl.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_Subscription-pl.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\es\msipc.dll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\7-Zip\Lang\az.txt.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVPolicy.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\SEQCHK10.DLL.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\REFSPCL.TTF.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jre-1.8\lib\ext\sunpkcs11.jar.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\TAG.XSL.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\PresentationUI.resources.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Inset.eftx.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial3-ul-oob.xrm-ms.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\rsod\office32ww.msi.16.x-none.boot.tree.dat.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft Help\nslist.hxl.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Common Files\microsoft shared\ink\es-ES\TipRes.dll.mui.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Http.Json.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\WindowsBase.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processenvironment-l1-1-0.dll.tmp 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.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 684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe"C:\Users\Admin\AppData\Local\Temp\684b848e80e4c95ecb7f2b390d64cc8564219ff506492d64a5d82af7eb911130.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2484
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
34KB
MD5156f6fe3dcaded100ed61c18bcbfd4c0
SHA1aba5aa452c3050719d86cff9b297e10cefa246a9
SHA256e0e005fd3ed44e662ce9a405014450cb14f5d989b7142600025a76bb3100eb92
SHA5125510a67c38764d2574d844b8129a32f6427d2cb8223720d01ff9aba09aa687ab7590bcb08f4b40afbc20be83a01f030514f473e93ebc121bd204c5f5c2221e64
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Filesize
119KB
MD5d35608ec52edc7a35742e76a96af7b71
SHA16ab35c6c29fef77e486d561a03ad6c7e81211b7c
SHA256a46ab5cf5fbf8962a58dfd8920b0af1e7f1df26ef041c6e459ea2bda24ef4863
SHA5122d29d4979372a75d58d72eb0c42bf17d10c2a653d24d2e061d1c0d5e10b2734a7d76ccb7bcd848df3e662533e59e709306c0cb94f2e1ab308e9f84032d84dee8