9e10b1d3bfaa6f2ba0292a0264f3e6e04c6ec27e3eb8c548a7c2c95343ebfb56

Analysis

max time kernel
31s
max time network
41s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 21:54

Sharing

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Reason

Machine shutdown

Report Analysis Logs

General

Target

638375a8ff9510e3fd1dc67602483dd0N.exe
Size

47KB
MD5

638375a8ff9510e3fd1dc67602483dd0
SHA1

b9ab505af3919bf1cea947acba1362a5332c3a4a
SHA256

9e10b1d3bfaa6f2ba0292a0264f3e6e04c6ec27e3eb8c548a7c2c95343ebfb56
SHA512

4ac77147f10da1739b55db0a19c268ff373b0e424d36e92feaab891ac497842e6b034c69769e94e6fe4fbc72f3c07ac21ad3143d1e7fba60645013a043cfb3ac
SSDEEP

768:kBT37CPKK1EXBwzEXBw3sgQw58eGkz2rcuesgQw58eGkz2rcu90TKe+0TKeinMdA:CTWUnMdyGdyqWFx5

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (987) 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/4340-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0008000000023455-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/4340-860-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\ado\msado27.tlb.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-locale-l1-1-0.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Json.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\UIAutomationClientSideProviders.resources.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-datetime-l1-1-0.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.Encoding.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\de.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\Services\verisign.bmp.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.CompilerServices.Unsafe.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.Tools.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.NameResolution.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Resources.Reader.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcp120.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipscsy.xml.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-localization-l1-2-0.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.X509Certificates.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\WindowsBase.resources.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Compression.Brotli.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\ro.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\it-IT\mshwLatin.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\msdaps.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Crashpad\metadata.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Annotations.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.Debug.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.DiagnosticSource.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceProcess.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.CSharp.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.Win32.Registry.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\et.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\et-EE\tipresx.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ja-JP\ShapeCollector.exe.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Formats.Asn1.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Controls.Ribbon.resources.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\InkObj.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknav\osknavbase.xml.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\fr-FR\msdasqlr.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Extensions.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Pipes.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\insert\insertbase.xml.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipssrb.xml.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Numerics.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Numerics.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\nn.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RCom.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\mshwLatin.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ObjectModel.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Http.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\PresentationFramework.resources.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\msdaprsr.dll.mui.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.Queryable.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Tasks.Parallel.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\coreclr.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\br.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.uk-ua.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Primitives.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Input.Manipulations.resources.dll.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\7-Zip\Lang\pt-br.txt.tmp	638375a8ff9510e3fd1dc67602483dd0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsen.xml.tmp	638375a8ff9510e3fd1dc67602483dd0N.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	638375a8ff9510e3fd1dc67602483dd0N.exe

C:\Users\Admin\AppData\Local\Temp\638375a8ff9510e3fd1dc67602483dd0N.exe
"C:\Users\Admin\AppData\Local\Temp\638375a8ff9510e3fd1dc67602483dd0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4340

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-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini.tmp

Filesize
48KB

MD5
809e66e4bcc5083ebefc2d767c8a8d04

SHA1
544608ee0fd890d53452d8d3994c850e24d13aed

SHA256
481145a6d78339504903d79da2d5f1712cf77c109953b9f44f014ea2664dbc7f

SHA512
f61236fda53b0884f987dbaf29b883e74e20c60c616a2434a37e236bc959254bef9b3a223e3b53fd5fcc056e41bd60694799b2031ce24ef3669ad447e14195e1

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

Filesize
146KB

MD5
83a2e11ecff3bd52cee0ce65dbdc6367

SHA1
4bafcaa1bfd535f9d92f49a39579201a098c1d87

SHA256
60e7f41fa248e21b60c5790b76f2e03968aa7a57d7e75ee598444297ff5854e0

SHA512
543f763f436e6d62f4941f1e6d597bf99ffb778ab39c584b371d9b58489b2c7c89c00bdec9d942dd3f6176ed933e5fa6c57cd5119d7ec198613eac7da19274bd

Download Submit
memory/4340-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4340-860-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download