Analysis
-
max time kernel
62s -
max time network
39s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
30/05/2025, 02:31
Static task
static1
Behavioral task
behavioral1
Sample
abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe
Resource
win11-20250502-en
General
-
Target
abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe
-
Size
34KB
-
MD5
fbc6a698b614ae61436e29d5356d06a4
-
SHA1
54f2e91862cdcd92e1e3101889ca433197c5274d
-
SHA256
abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f
-
SHA512
e1e2ea16a4e3d8126678274a61ee346bc76e9a3480d0744c896d7346e4feba6bcebde2f98cc8c3139cad99c40254fb30c79793a7acff614df991b1aa181b6296
-
SSDEEP
768:uZ4FLz8ae+rOn8ae+rO+4500n1kJ00n1kNIyIZ:uGII+49101yIyIZ
Malware Config
Signatures
-
Cosmu family
-
Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/memory/3248-1187-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (2087) 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.NETCore.App\7.0.16\System.IO.Compression.ZipFile.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\ta.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsjpn.xml.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\tabskb.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\d3dcompiler_47.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Java\jdk-1.8\bin\idlj.exe.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\SubsystemController.man.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationTypes.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\de\ReachFramework.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\ug.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.lv-lv.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationTypes.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ru\PresentationCore.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_altgr.xml.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Thread.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.hu-hu.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.Windows.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\Microsoft.Win32.SystemEvents.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\de-DE\rtscom.dll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\System\ja-JP\wab32res.dll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.CompilerServices.Unsafe.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Intrinsics.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\cpprestsdk.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\it-IT\mshwLatin.dll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.WebHeaderCollection.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Runtime.Extensions.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\PresentationFramework.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\7z.sfx.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\nl.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-convert-l1-1-0.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\hwrenclm.dat.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\ru-RU\tipresx.dll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-processenvironment-l1-1-0.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\WindowsBase.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ko\WindowsBase.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\ku.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.he-il.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Runtime.InteropServices.RuntimeInformation.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Resources.ResourceManager.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Data.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\WindowsFormsIntegration.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\fr\UIAutomationClient.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\fr\WindowsBase.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\WindowsBase.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Internet Explorer\en-US\ieinstal.exe.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcr120.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\System\Ole DB\en-US\sqloledb.rll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Data.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Collections.NonGeneric.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encoding.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\eu.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\lt.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskclearui\oskclearuibase.xml.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\TipTsf.dll.mui.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\PresentationCore.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\7-Zip\Lang\io.txt.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-synch-l1-2-0.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Xaml.resources.dll.tmp abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.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 abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe"C:\Users\Admin\AppData\Local\Temp\abc8e361a8acfeeaaa247945b4ca4e0f6378334e97f4bb6ea23f4951d3976b3f.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3248
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
34KB
MD58c36b99d3f367549fdae735bb6dcdb8b
SHA119b85f01c7c2f47316de8804ce30745626f847e9
SHA2567cd04bcdfed9d591be84cb2f24231bcf0b2d77610cc2731af758127efba2a877
SHA51288116117b45f48bf147cc7200218a9149e84f8360cd2bed7bea1851e146ba31a56f67ddb5ad6214af80e1edb6690606b3f5eb126dbbd33e0365e9b4f327ec3c7
-
Filesize
114KB
MD5e951c92e0922de3e67f12a1ce7a1c777
SHA14b825898cdcf67a68fad81cf47e2a0f27da999d6
SHA256b9be90caf2772c842ad48485ce97d94a707c8b19a8a1b6a40dcd09ba15d586aa
SHA5123b198ca7781ab9dd09f7311ad367c39f95bde376e0cffd11b68031db30730ecf84bbada66cfcff64b6d6bd05d409de054ee10f588759e15fc2becaa5fc1f8a38