b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a

Analysis

max time kernel
120s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11/01/2025, 21:09

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General

Target

b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
Size

738KB
MD5

eab7ea8cade944ee7641cd0d7f063bd2
SHA1

1b4a0155648fc4227d61ccd15cc036bf023c1931
SHA256

b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a
SHA512

795c37944a1e8efc462e6066e90a6a1ea823ed2a8deab035d7d149d8ce2b7422001a51aa27538354c50a5683f6541134b921a828f1924a08521ba5e190f43b30
SSDEEP

12288:+IZGNXkbvLbIZGNXkbvL6D+k3aJ5xDfN4D7/SAOZi+5u4+rcKftu:+IZaXkbv/IZaXkbv0kJTR4D7/SAOZi+9

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (1941) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2380-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000c000000023b1f-2.dat	upx
behavioral2/files/0x00040000000228fe-6.dat	upx
behavioral2/memory/2380-421-0x0000000000400000-0x000000000040A000-memory.dmp	upx

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.Collections.Immutable.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Design.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\7-Zip\Lang\ca.txt.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\msquic.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ServiceProcess.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.Aero2.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\UIAutomationClient.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\pt-BR\tipresx.dll.mui.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.TypeExtensions.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\7-Zip\Lang\uz-cyrl.txt.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\System\msadc\adcjavas.inc.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encoding.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.NETCore.App.runtimeconfig.json.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.Win32.Registry.AccessControl.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.DirectoryServices.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcp140.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Crashpad\metadata.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ComponentModel.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\PresentationCore.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\Microsoft.VisualBasic.Forms.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Java\jdk-1.8\bin\klist.exe.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\System\wab32.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationTypes.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\UIAutomationTypes.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\ReachFramework.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ko.pak.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Windows.Forms.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\EditLimit.dwg.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Resources.Writer.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.FileSystem.Primitives.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Principal.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\WindowsFormsIntegration.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.DirectoryServices.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\System\Ole DB\es-ES\oledb32r.dll.mui.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.WebProxy.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\ReachFramework.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Windows.Controls.Ribbon.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l1-1-0.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\System.Xaml.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\TipTsf.dll.mui.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encoding.Extensions.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\am.pak.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ar-sa.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.InteropServices.RuntimeInformation.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-string-l1-1-0.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\System\msadc\msdaprsr.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\UIAutomationProvider.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationTypes.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Xaml.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Diagnostics.PerformanceCounter.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Uri.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\netstandard.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\PresentationFramework.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\UIAutomationClientSideProviders.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\ReachFramework.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClient.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\IpsPlugin.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\Common Files\System\Ole DB\oledb32.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Collections.NonGeneric.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\UIAutomationClientSideProviders.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.Design.resources.dll.tmp	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe

C:\Users\Admin\AppData\Local\Temp\b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe
"C:\Users\Admin\AppData\Local\Temp\b43be4ea1cdf1c9c291ec7b05403a47b06db9c7a896ae3f08798b4b7d40c313a.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2380

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-3350944739-639801879-157714471-1000\desktop.ini.tmp

Filesize
738KB

MD5
0b5561a85a6b9e7b18d73d39c40393e6

SHA1
dfade3538653ea4ebaee6114f53a50de63fb5e7e

SHA256
bd6b53fe8d137df27e0f9b2ec272f3e1383fc44e6cece557f2f5eadca12d92aa

SHA512
740e2f2e179b468e84ad20d152dd04b07ed091c2a5757adcf26eb5aca871e831f452204b3df9ef722066d803fde6d345c93b2124303627124d96ab3b721402af

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp

Filesize
837KB

MD5
9cc71287fa481f96f792d395185fe7d8

SHA1
aa30f046aaf527fe587e0c44350d6d3e5acd91d5

SHA256
3dc8f33450e60fd80c174c0e66923598b91ba5e09104afc23910037157964716

SHA512
54fb931748f232210a0dcf8d81898b55bfdf3016f18175ce54aac66d14727be11089f75a51e40d5adcaba03ab207e433b8a1acbbf4b03982f449feed53b7290a

Download Submit
memory/2380-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2380-421-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download