Analysis
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max time kernel
149s -
max time network
102s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
29/05/2025, 10:04
Static task
static1
Behavioral task
behavioral1
Sample
186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe
Resource
win11-20250502-en
General
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Target
186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe
-
Size
34KB
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MD5
82ae0dc11840cf3e89e597856d8f5ee8
-
SHA1
04f71d6c139ced0b09ff5ab1539f72e0b132652b
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SHA256
186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2
-
SHA512
9b99aacfbe2f74425c98cb78ddd833fd60324e274f2dcd5fe5895f0d947c3f12b437eb03b8c5461b9ef191b5b7a2af2a29588bcdcc19e250ddd0628e57ea4f1b
-
SSDEEP
384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOYE/AE/DZKNZKy7MwlwHnFn3:uZ4FLz8ae+rOn8ae+rOrZkZ/7M4anFn3
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 behavioral2/memory/864-1221-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (5357) 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\javafx-src.zip.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ul-phn.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\VisualElements\Logo.png.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\ar\msipc.dll.mui.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\DataModel\Microsoft.Excel.SPClient.Interfaces.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Encoding.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\WindowsBase.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jre-1.8\bin\management.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.es-es.xml.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-ppd.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-convert-l1-1-0.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jre-1.8\bin\npt.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-ul-phn.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\api-ms-win-core-file-l2-1-0.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.Win32.Registry.AccessControl.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription5-ppd.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Trial-ppd.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Intrinsics.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Diagnostics.Tools.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationTypes.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\UIAutomationProvider.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\he.pak.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\legal\javafx\webkit.md.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-pl.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\MEDIA\BREEZE.WAV.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Formats.Asn1.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\ReachFramework.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\Microsoft.VisualBasic.Forms.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\verify.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Trial-ul-oob.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jfxmedia.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_BypassTrial180-ul-oob.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Formats.Asn1.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_Retail-ul-oob.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\en\LocalizedStrings.xml.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.DispatchProxy.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Globalization.Extensions.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\zh-Hant\UIAutomationTypes.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ppd.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019MSDNR_Retail-pl.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sr-latn-rs.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\sk.pak.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Core.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.Primitives.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\System.Xaml.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\PresentationCore.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\security\cacerts.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-ul-oob.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-pl.xrm-ms.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\include\jdwpTransport.h.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\libpng.md.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\icu.md.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\EXCEL_F_COL.HXK.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\Microsoft.VisualStudio.Tools.Applications.Runtime.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\Office16\MSOSPECTRE.DLL.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft Help\MS.SETLANG.16.1033.hxn.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Uri.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.Overlapped.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\Microsoft.VisualBasic.Forms.resources.dll.tmp 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.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 186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe"C:\Users\Admin\AppData\Local\Temp\186222b5af4cbed7ad1e958567d7fd9fd200a653f83aee40aadc1dc70933fdc2.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:864
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
34KB
MD5777c9a326493cd28b8d830a7bad0a45a
SHA19fc17c618ec4e899a28097229fde0a7dc6059801
SHA2564a606036f25d3618cc6fa587e291b050c44ca3a7e39c1787d8a52fcbed94974f
SHA5127e3cff72294dd0956002849fc65c5689b22603f95bb6244656d10f46c170b1cd8b459d8facec88afee54b76e78661305d21efd1386dc5f205ffd7d514cd860a7
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Filesize
115KB
MD5b71ca468135eb61df2a9ea89f1d9a06f
SHA17df7f10747041d08fe3bb60e5dcec18a37a2688e
SHA25665a60a0ff14eeedcbd6f757182a0b08ac5cfabccfeb51eb13b83cfb55009f9f3
SHA5121b69d8244e15aa1d51adf61df501ea0e2bf8b88cffc8ea16a23fb44daed4f44f35b6ba540b0e04a00d65122e046a0a727cc05cc63ec1ad43101a15c61a4d6b4e