636a884f10dce61c981c54b0a6e8d04a7eeb33b978a24aa4da0343029a50b087

Analysis

max time kernel
120s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16/08/2024, 22:20

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General

Target

c21d168154d45edecefa3c29e4537bc0N.exe
Size

109KB
MD5

c21d168154d45edecefa3c29e4537bc0
SHA1

847050e0baa6977fc5f6a10a9877f31e580b2837
SHA256

636a884f10dce61c981c54b0a6e8d04a7eeb33b978a24aa4da0343029a50b087
SHA512

c23e31269ab2ce8e26daad0ac5887b43ee89d4ed93fd4cc464f2f8fe1f92184dedf61a8ae7ace2f5e7547105ab77631ab8f4888f3da1e64498f90b68fdda4314
SSDEEP

3072:fnyiQSo7Zf2X0yKoIWbsHfySkT5GeCyi348oWGRPOzkjId6q8UdrSD+kCoIfL2Yi:KiQSoV2H

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4339) 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/4756-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233d9-2.dat	upx
behavioral2/files/0x0014000000022913-6.dat	upx
behavioral2/memory/4756-844-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ink\ThirdPartyNotices.MSHWLatin.txt.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationClient.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-runtime-l1-1-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\hprof.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.Reporting.Common.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvApi.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\DataStreamerLibrary.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_rtl.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.Formatters.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.Dataflow.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\UIAutomationTypes.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Xaml.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationNative_cor3.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-environment-l1-1-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.common.16.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationClientSideProviders.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\relaxngcc.md.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsymt.ttf.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.ServicePoint.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationProvider.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PenImc_cor3.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Windows.Input.Manipulations.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\PresentationCore.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ul-oob.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\Microsoft.VisualBasic.Forms.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\joni.md.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Red Violet.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_MAKC2R-pl.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-string-l1-1-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\calendars.properties.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ChakraCore.Debugger.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\ja-jp.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\PresentationUI.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ar.pak.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l1-2-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-time-l1-1-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\dt_socket.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Green Yellow.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Core.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.X509Certificates.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\PresentationCore.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\PresentationFramework.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\hr-HR\tipresx.dll.mui.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\UIAutomationClient.resources.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\jpeg_fx.md.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\icu.md.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\GRINTL32.DLL.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsnor.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Aspect.xml.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-pl.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.FileVersionInfo.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ValueTuple.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\server\classes.jsa.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_MAK_AE-ul-phn.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ppd.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-runtime-l1-1-0.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.IO.Packaging.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-oob.xrm-ms.tmp	c21d168154d45edecefa3c29e4537bc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Security.Cryptography.Pkcs.dll.tmp	c21d168154d45edecefa3c29e4537bc0N.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	c21d168154d45edecefa3c29e4537bc0N.exe

C:\Users\Admin\AppData\Local\Temp\c21d168154d45edecefa3c29e4537bc0N.exe
"C:\Users\Admin\AppData\Local\Temp\c21d168154d45edecefa3c29e4537bc0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4756

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-1-5-21-656926755-4116854191-210765258-1000\desktop.ini.tmp

Filesize
110KB

MD5
c22fb15340058e3275c12e02b57073e0

SHA1
eea59a34565668f99c71db69f94c981bafd0c77e

SHA256
ad3e95b175e71bd740d69a764fc7b83c25214caa225b2d3ee354afeacadb4e9d

SHA512
898498e3d84da6bdd79ad1ee4d3980ffb5576e0a5c8bc473e7a5805244f6261ec998cccb06df06d6103c53f02dfcef26f323d84d37c6aec113c92779fa1fb898

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

Filesize
208KB

MD5
52523725bb6926ffcf856acc1b01c3a0

SHA1
4c6197dcf22978b8c2cee1d7702736abf68bcb17

SHA256
233971504446345d0d35dd4fe53eebf621941e28988f7715552212b603241aed

SHA512
c12c3da517284cec819b2edf6395f4ab1dabcd87fe928a3ca85ca099f60fd98e0273552a6bad9c372a5538ca94731aa5c6ef09067ae9210aa50a9b8ba37f52bd

Download Submit
memory/4756-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4756-844-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download