c6881e3391d157a1c6ff631617d88394092fb098b647a624c1a86309f7fe8c31

Analysis

max time kernel
120s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 18:31

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General

Target

8e51904330eae5bcfa13b6742159f8a0N.exe
Size

36KB
MD5

8e51904330eae5bcfa13b6742159f8a0
SHA1

516499c2849e8712552720a9745a25d049d47fdc
SHA256

c6881e3391d157a1c6ff631617d88394092fb098b647a624c1a86309f7fe8c31
SHA512

1a7630938d95caa29c684e9df01ccaaf4bf30b8154044fefaf90dd05d66233eb8684ff2381dae2512430d04203f1d65443e42418038a0ab051c43fbf98bd5a15
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI9cGsGWoyoh:CTW7JJ7TyGsGDXh

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4654) 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/3748-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00090000000233e7-2.dat	upx
behavioral2/files/0x000400000002291b-6.dat	upx
behavioral2/memory/3748-798-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Xaml.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-processthreads-l1-1-1.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\7-Zip\7-zip.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\7-Zip\7z.exe.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\eventlog_provider.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\sunec.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_KMS_Automation-ul-oob.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Retail-pl.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019MSDNR_Retail-ul-phn.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\word2013.dotx.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Resources.Writer.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Diagnostics.PerformanceCounter.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\PresentationCore.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\jfr.jar.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\splashscreen.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Retail-ul-phn.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\oledbvbs.inc.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClient.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CHART.DLL.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-black_scale-140.png.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.Parallel.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-string-l1-1-0.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-ppd.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ppd.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.SqlServer.Types.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\UIAutomationTypes.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Security.Cryptography.ProtectedData.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Extensions.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\Microsoft.VisualBasic.Forms.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_wer.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Retail-ul-oob.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\fr-FR\sqloledb.rll.mui.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.Linq.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\System\ado\it-IT\msader15.dll.mui.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Primitives.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\PresentationUI.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\WindowsFormsIntegration.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.IO.Packaging.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-pl.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\7-Zip\Lang\ext.txt.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_SubTrial-ul-oob.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-100.png.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Retail-ul-phn.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_SubTrial-pl.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libxml2.md.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\invalid32x32.gif.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Http.Json.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Input.Manipulations.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-process-l1-1-0.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\GKExcel.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\System\ado\msadox.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jp2native.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Resources.ResourceManager.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\fxplugins.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-ul-phn.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.Design.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.resources.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E1-0000-1000-0000000FF1CE.xml.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Trial-pl.xrm-ms.tmp	8e51904330eae5bcfa13b6742159f8a0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\msdasql.dll.tmp	8e51904330eae5bcfa13b6742159f8a0N.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	8e51904330eae5bcfa13b6742159f8a0N.exe

C:\Users\Admin\AppData\Local\Temp\8e51904330eae5bcfa13b6742159f8a0N.exe
"C:\Users\Admin\AppData\Local\Temp\8e51904330eae5bcfa13b6742159f8a0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3748

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

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Downloads

C:\$Recycle.Bin\S-1-5-21-1302416131-1437503476-2806442725-1000\desktop.ini.tmp

Filesize
36KB

MD5
c719ccaebb57e2b2d1e140be3e761b51

SHA1
1d10caa236d82a04d1c5c66abf9937c16587f643

SHA256
9af81bf03c1153ea321ceed0d7b724cc6ce7a5bdaa58b0bbf20fb391d872ffbd

SHA512
671dff537951a9070dea2e4e7021d8da3ea0b513a3e77bd76a56d0ba857db5fdb368dbad15c7002a3ad0e5d5add078d8c4ea08242533d2e05297a751588bf3da

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

Filesize
135KB

MD5
7e8423824ef11d969aa65b6f6f55be8a

SHA1
ea825b7aec3fc501d0f64b3e1530a4d9acae9727

SHA256
e9c9f95943b19fa1fb9558aed886ffc708e1f8334924ac544f95519f28c03d9f

SHA512
8884a8039aa5e9c5046520b94b0a7e8584c570aab9e3b5947aa6f466e22308b3d83c8c10c7a0346d0d9306086117a7d08134ea9b6dba6de4dc1f771cf04f8747

Download Submit
memory/3748-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3748-798-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download