Analysis
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max time kernel
150s -
max time network
109s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
05/06/2025, 08:15
Behavioral task
behavioral1
Sample
c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe
Resource
win11-20250502-en
General
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Target
c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe
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Size
85KB
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MD5
93b4f040d2459e0e9f51758492921bc8
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SHA1
b845596bc215479dc8e9abb08b02800a1242bd16
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SHA256
c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132
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SHA512
6c25264ea60156a0988f266ae1762cc2be884355cbe8aad4f439a34824103bc4f40730a9fb7443b7173f90610417f3700bccd550654fd7b2352ede178d167238
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SSDEEP
1536:s7ZppApdII1grC35rtLgnTVoAUZY/ECGn6cmi8eEXcBxOBxP:spWpT9InTVsZYFG6cZxnOnP
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 behavioral2/files/0x001c00000002aec8-1.dat family_cosmu behavioral2/files/0x000400000002700d-5.dat family_cosmu -
Renames multiple (5188) 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\Internet Explorer\images\bing.ico.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Java\jre-1.8\bin\net.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp2-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WindowsFormsIntegration.resources.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Top Shadow.eftx.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\MEDIA\BOMB.WAV.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_Grace-ppd.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_OEM_Perp-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\ea.xml.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-handle-l1-1-0.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\dom.md.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.resources.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-heap-l1-1-0.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\DBGHELP.DLL.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL108.XML.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Java\jre-1.8\lib\accessibility.properties.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_KMS_Client-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\Configuration\card_terms_dict.txt.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL082.XML.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework.Royale.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerPoint.PowerPoint.x-none.msi.16.x-none.xml.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-ppd.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.HttpListener.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\System.Windows.Forms.Design.resources.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusE5R_SubTrial-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\api-ms-win-core-xstate-l2-1-0.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\OFFSYMXL.TTF.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\OneNote\prnSendToOneNote_win7.inf.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_KMS_Client_AE-ppd.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\System.Windows.Input.Manipulations.resources.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_ConsumerSub_Bypass30-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Retail-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\XLINTL32.DLL.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART6.BDR.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Common Files\System\Ole DB\it-IT\oledb32r.dll.mui.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\Microsoft.NETCore.App.runtimeconfig.json.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.FileSystem.Watcher.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\ISO690Nmerical.XSL.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Common Files\System\msadc\msdaprst.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jp2ssv.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Garamond.xml.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Trial-ul-oob.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdXC2RVL_MAKC2R-pl.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\fi\msipc.dll.mui.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\redshift.ini.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\VVIEWER.DLL.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Csp.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\it\System.Windows.Controls.Ribbon.resources.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\swidtag\Microsoft Windows Desktop Runtime - 6.0.27 (x64).swidtag.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\office.core.operational.js.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\manifest.xml.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Dataflow.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.dll.tmp c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.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 c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe"C:\Users\Admin\AppData\Local\Temp\c284bfd70aad3207fc289531fb05cda5d8154d3624718b7db91fac6569a60132.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4968
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
85KB
MD5b79608a79f837f0e2c33664dac26e9d1
SHA16e970be973742adbc0bb7854d973c34976eff9b0
SHA25686745d8603850d6fff887ff755a9546e8ef2f944b582b3f7178f461ce8716ad5
SHA512d8c93cf3dc2c408c7d32733fe63060ed67b230fa947dcad27f662a66e80ecc8477b0db5cf2abdf213f7d0dcce9bda59f5d474f83f5562c4794603db71392b6a3
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Filesize
171KB
MD52cdb0545abb1518fcd39ad32933fc790
SHA15f7c792a29297c756469d5c2790edfa9344a4caf
SHA256284f0aa604f724e68c3c7029680884856f5078828971bf2998e582766ea0cadb
SHA512cfad57ce1c4861418a5cb76b99ef9c3493e71eb8eeaf5100b149473394edd118a2536e7ecec14e3b3c6f34cdea184f6c7423f41857d501e172239ed1e486ba2a