84b5234c1a2461c58892d5d52c377913cdf62afcf31f2c1be8c1459faab1308b

Analysis

max time kernel
120s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 06:58

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General

Target

a4b9617e383d9b2b2bd0fd1da22cb230N.exe
Size

53KB
MD5

a4b9617e383d9b2b2bd0fd1da22cb230
SHA1

4ebd4b15bbb364e14eef6d65964684b95269f9f4
SHA256

84b5234c1a2461c58892d5d52c377913cdf62afcf31f2c1be8c1459faab1308b
SHA512

85d98724bd34b8a3d8d0b89b17a4c9da02760bdb744360bdc3f9212082b1e8bb10741362c1b9ffcaeb5bab719326d97a7066de76121102549bf573a816aff22b
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATNyHF/MF/HggD5j:V7Zf/FAxTWoJJZENTNyl2aPK

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (1791) 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/1892-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233d7-2.dat	upx
behavioral2/files/0x0014000000022909-6.dat	upx
behavioral2/memory/1892-1218-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.AccessControl.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\WindowsBase.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\UIAutomationTypes.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceModel.Web.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Timer.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Controls.Ribbon.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.Formatters.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Input.Manipulations.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\UIAutomationProvider.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-stdio-l1-1-0.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVClientIsv.man.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Web.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.DiagnosticSource.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Forms.Design.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Forms.Primitives.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\clretwrc.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.AeroLite.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\UIAutomationTypes.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-environment-l1-1-0.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\tpcps.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.MemoryMappedFiles.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\dxil.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\libGLESv2.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.DirectoryServices.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\StreamServer.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Collections.Immutable.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationCore.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemXmlLinq.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Forms.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ja-JP\InkObj.dll.mui.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.InteropServices.RuntimeInformation.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.Win32.Registry.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Windows.Forms.Primitives.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Forms.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols.xml.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\System\es-ES\wab32res.dll.mui.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.WebSockets.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.Encodings.Web.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationUI.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.Contracts.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Resources.Extensions.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Input.Manipulations.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\PresentationUI.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\System.Xaml.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\eventlog_provider.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.de-de.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationFramework.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Drawing.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClientSideProviders.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\7-Zip\Lang\lv.txt.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.HttpListener.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.Design.resources.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\7-Zip\Lang\sr-spl.txt.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.Parallel.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\clrjit.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Compression.FileSystem.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Principal.Windows.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\Common Files\System\msadc\fr-FR\msadcer.dll.mui.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\ConvertToBlock.cab.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.dll.tmp	a4b9617e383d9b2b2bd0fd1da22cb230N.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	a4b9617e383d9b2b2bd0fd1da22cb230N.exe

C:\Users\Admin\AppData\Local\Temp\a4b9617e383d9b2b2bd0fd1da22cb230N.exe
"C:\Users\Admin\AppData\Local\Temp\a4b9617e383d9b2b2bd0fd1da22cb230N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1892

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-1-5-21-384068567-2943195810-3631207890-1000\desktop.ini.tmp

Filesize
53KB

MD5
b8138675dbc0d01aea9c1324fad8b4fd

SHA1
73b32f9388f1224faca11cafcece48de40e41966

SHA256
94bed6d7209d01b7798b30c0aee43b2889df1b879c3030cdf6f9c04a33b54195

SHA512
8ada760c0709531def15f23d86d5fb92068671d05de3c79857c3470a1a2bccf4bde1b98b1a7fa377663efacf52badbc73e22c00bc6cadf9382bc4e1cf1fa3365

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

Filesize
152KB

MD5
128ff03a6f2db712149878d5fa9905ed

SHA1
3b7b5cf72a6d54ed37967d00cf9aeac5d339cea4

SHA256
1e535ef2dd92aede4041487a5da5ba4e40fa3e099e3748078f9db3b6aa95c960

SHA512
752f5b041c434131ea6dd7748121380d22267af9d131c1e60a00cfd4dc0493486475a0366ececd1c28408670c06539a723ed5cbc8dcfffbb8ae1145441dd8a7b

Download Submit
memory/1892-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1892-1218-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download