Analysis
-
max time kernel
150s -
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, 14:07
Behavioral task
behavioral1
Sample
420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe
Resource
win11-20250502-en
General
-
Target
420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe
-
Size
38KB
-
MD5
aede2dfb077f70e26175c5e385378632
-
SHA1
5f2218409dae60500b8ee6f6f0e186245b5a2348
-
SHA256
420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761
-
SHA512
e20873343a4d1d65f6a90a1e8e6d32ff45971d7a9370054812aa3822a6d8f05b111f6ede16aac5b01ccae8e6a62e6b089a285921b2e29da8d3b64cce6a25f1b1
-
SSDEEP
768:s7BlpppARFbhdLz8ae+rOn8ae+rO2aNQP+UDQvu:s7ZppApdIIJQP+UDQvu
Malware Config
Signatures
-
Cosmu family
-
Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/files/0x000600000002a8c4-1.dat family_cosmu behavioral2/files/0x00040000000270ce-5.dat family_cosmu -
Renames multiple (5285) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Common Files\microsoft shared\VC\msdia100.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Common Files\System\Ole DB\es-ES\oledb32r.dll.mui.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\UIAutomationTypes.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Xaml.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\fr\PresentationFramework.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\PrivacySandboxAttestationsPreloaded\manifest.json.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME.txt.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\7-Zip\Lang\mng2.txt.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l1-2-0.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32mui.msi.16.en-us.xml.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-pl.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ul.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\EntityPicker.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ul-oob.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-pl.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\OART.DLL.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\OFFSYM.TTF.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\PROOF\LTSHYPH_FR.LEX.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Common Files\microsoft shared\ink\id-ID\tipresx.dll.mui.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\System.Xaml.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\EnterSuspend.mp4.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\TellMeRuntime.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Google\Chrome\Application\chrome.exe.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Java\jre-1.8\bin\javafx_iio.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Grace-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\Interceptor.tlb.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN096.XML.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\PROOF\msth8ES.DLL.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipshi.xml.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Primitives.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\PresentationUI.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jsdt.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Templates\1033\TimelessResume.dotx.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-pl.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_MAK_AE-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019VL_KMS_Client_AE-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019DemoR_BypassTrial180-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Retail-pl.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\rsod\powerpoint.x-none.msi.16.x-none.tree.dat.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Globalization.Extensions.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Forms.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Microsoft.WindowsDesktop.App.deps.json.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Grace-ppd.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Grace-ul-oob.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\VISUALIZATIONCONTROL.DLL.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\7-Zip\Lang\eo.txt.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Controls.Ribbon.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Common Files\microsoft shared\ink\en-US\tabskb.dll.mui.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\PresentationCore.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Diagnostics.EventLog.Messages.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Java\jre-1.8\bin\jp2ssv.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses\c2rpridslicensefiles_auto.xml.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ul-phn.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\api-ms-win-crt-math-l1-1-0.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Windows.Forms.Design.resources.dll.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial4-pl.xrm-ms.tmp 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.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 420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe"C:\Users\Admin\AppData\Local\Temp\420dff3765d823584ac2d91c17d3f03103b89fdc1c30993c6a4834bc976ba761.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:5240
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
38KB
MD50c205e4a33c9d24a49f463a1ff626f5e
SHA18bd3790e4e7ee86fcb87851b63c8ef61e3066440
SHA25685c9a24a8b42a188535f2b97a0c1efdece4a4e9f2e8b17950c8f544e6625b7c1
SHA512b30a34efd996b3c448f1ba692f0bf73c76e0324f44fed6f7cd8ee42b96e4aea1089b3dcf3baf46cd51c54e28ef0b4cdea916f156396852cf5bccfa2c0ae46744
-
Filesize
120KB
MD543a1dbc0f422c8053a62e8a3e56cd61b
SHA16898acd905759fd12ca8267fc918d253b48eb019
SHA256a9dbfdd886f5d7ce87bb026a3ea5d0bba495ce12660c2a8213d5c749f075d835
SHA51291143bc768e90daf8607fa03830fa95677c051e299dd361853e28b95d840faedad73d7fa724d986c3d20cc7e0a9478df929804a7b72949e3e0de03f045de7b48