Analysis
-
max time kernel
149s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20250502-en -
resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system -
submitted
05/06/2025, 07:27
Behavioral task
behavioral1
Sample
2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe
Resource
win10v2004-20250502-en
General
-
Target
2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe
-
Size
155KB
-
MD5
12cdf927eb8ffd678c342e34817b85e4
-
SHA1
566e35133dad5a82a7ea125d69647c86bfbf792f
-
SHA256
2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9
-
SHA512
0df979577907610580e7c7f4c4b92d6ef31e006b214691416b9da841f119e0c8c1490b6bb5be0c6c6826258d6b40021c9b4e87a00a10725aed87c8e5e376521f
-
SSDEEP
1536:s7ZppApdIIyBoLqrNkW1zN0m0lG1tETSA60uXceS4JseKeFdasat:spWpsBsqrNkMzN0mx7Sr60ug4GF
Malware Config
Signatures
-
Cosmu family
-
Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/files/0x00060000000236f9-1.dat family_cosmu behavioral1/files/0x000400000001eea5-5.dat family_cosmu -
Renames multiple (4843) 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\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\Microsoft.VisualBasic.Forms.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\wsdetect.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial-pl.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Trial-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\7-Zip\Lang\mk.txt.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwritalm.dat.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Dynamic.Runtime.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.DispatchProxy.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pt-BR\PresentationUI.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-pl.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\Bibliography\BIBFORM.XML.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_jpn.xml.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\System\uk-UA\wab32res.dll.mui.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\UIAutomationClient.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-locale-l1-1-0.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-ul-phn.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jdk-1.8\include\jawt.h.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Blue.xml.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Office16\flat_officeFontsPreview.ttf.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\7-Zip\Lang\th.txt.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvSubsystemController.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationClientSideProviders.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-pl.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-ul-phn.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Transactions.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\msvcp140_2.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Office16\FPA_f33\FA000000033.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\UIAutomationClient.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\PresentationUI.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\ReachFramework.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp2-ul-phn.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\7-Zip\Lang\kk.txt.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ink\TipRes.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\System.Xaml.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_MAKC2R-ul-oob.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Forms.Design.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\zipfs.jar.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Grace-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordR_OEM_Perp-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\SkypeForBusinessBasic2019_eula.txt.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\7-Zip\Lang\mng.txt.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\jce.jar.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ul-oob.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTrial-pl.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-memory-l1-1-0.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvApi.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Common Files\System\msadc\de-DE\msdaremr.dll.mui.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\WindowsFormsIntegration.resources.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Java\jre-1.8\lib\security\policy\limited\local_policy.jar.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTrial-pl.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN090.XML.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Retail-ppd.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-ul-phn.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Diagnostics.DiagnosticSource.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-ul-oob.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ul-oob.xrm-ms.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.VisualBasic.dll.tmp 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.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 2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe"C:\Users\Admin\AppData\Local\Temp\2e8d90b61b615387f92e3a778e15d4051cecfce2e97d63e85146babe8314cba9.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4120
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
155KB
MD52b9fc9073359e7cb2845f312669b0926
SHA19c27d64a3a3f13930a18411164e3573f9b5a1e88
SHA2561d50944d884ec5e044243756692361eeec41964cce18381552d8049e458c429d
SHA512c582f28459f004560fa36500fd7849e153626203183f2f51a7e88b010df4be9df9979d50e5e431211acb1c7f33802933c92c69973fdd19527e76d464ab7c1524
-
Filesize
240KB
MD523eea8ed7d86557d23d10c4314e39d32
SHA10f5e8dbf206f75c0232ee9ee52bef4fcd1a815ea
SHA25664e0d26d96fe3fccb6a08fe6a08edcf5e22424a19869200db707a6a74b942105
SHA5124f13172f964860ac2145c63115b65f5d3af8c59688091ce6cab1389f94f0313f06bcea9fe454ee6e48cebffc3a452a576624a797cdfad44705dc656f2c6f5827