906a7d57b504110abe748fbc5e73290593d2804baa9e76a49158934308ce2fde

Analysis

max time kernel
120s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240704-en
resource tags

arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 10:07

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b4723c98a2f43c2075b5771318a29010N.exe
Size

46KB
MD5

b4723c98a2f43c2075b5771318a29010
SHA1

2417ee8072a3baf3fe425fd0294729caae5d399b
SHA256

906a7d57b504110abe748fbc5e73290593d2804baa9e76a49158934308ce2fde
SHA512

f8dfac153918151eabc106d2d32047b92b4404252a35ae7779e12d591a33d3e989250212452736a5db71fbc7fc40f5b4a22881ab2bba3a57e0ddc30cccdb77e7
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJBZBZaOAOIB3jM2jM3:V7Zf/FAxTWoJJB7LD2I2I3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (1761) 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/380-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023423-2.dat	upx
behavioral2/files/0x0004000000022949-6.dat	upx
behavioral2/memory/380-1122-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Xaml.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Microsoft.Win32.SystemEvents.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.fi-fi.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.EventBasedAsync.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.Tools.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.X509Certificates.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\hr.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.Primitives.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Forms.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\WindowsFormsIntegration.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\WindowsBase.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\wpfgfx_cor3.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\TipRes.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOMessageProvider.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.CompilerServices.VisualC.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.RegularExpressions.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Windows.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\UIAutomationTypes.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceProcess.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Controls.Ribbon.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\Microsoft.VisualBasic.Forms.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\UIAutomationProvider.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\ms.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.lv-lv.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-GB\tipresx.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\UIAutomationClientSideProviders.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Controls.Ribbon.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\System.Windows.Forms.Primitives.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\eu.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msadcor.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Channels.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Extensions.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.Cng.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\sk-SK\tipresx.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\System\ado\en-US\msader15.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.CodeDom.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\WindowsFormsIntegration.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationUI.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.DirectoryServices.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscorlib.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\WindowsFormsIntegration.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Forms.Design.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\.version.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Diagnostics.EventLog.Messages.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\UIAutomationProvider.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\nb.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\ne.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVCatalog.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\vccorlib140.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Forms.Primitives.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Diagnostics.PerformanceCounter.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Google\Chrome\Application\110.0.5481.104\icudtl.dat.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\bg-BG\tipresx.dll.mui.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Transactions.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\WindowsBase.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsBase.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClientSideProviders.resources.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.InteropServices.dll.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\7-Zip\Lang\id.txt.tmp	b4723c98a2f43c2075b5771318a29010N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipscht.xml.tmp	b4723c98a2f43c2075b5771318a29010N.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	b4723c98a2f43c2075b5771318a29010N.exe

C:\Users\Admin\AppData\Local\Temp\b4723c98a2f43c2075b5771318a29010N.exe
"C:\Users\Admin\AppData\Local\Temp\b4723c98a2f43c2075b5771318a29010N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:380

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

Loading Replay Monitor...

Downloads

C:\$Recycle.Bin\S-1-5-21-1403246978-718555486-3105247137-1000\desktop.ini.tmp

Filesize
46KB

MD5
522ff0eef32aaa9e9305f33286e2e3b8

SHA1
88278557767c2076e3a5b39c23042a1a3a91bb56

SHA256
a4ee7fc40887a4f41ccc9fa8f5bbf5b93d14915f524e71561129550ba6388e94

SHA512
64c23f23255b77081f392aecbc5d24e9609fce2dd57caec5d2957f1c0b116a6d97321e8084f04ca20d0b0bf878bf17733a15c2b01532c51d1ef35662d3a6ed71

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

Filesize
145KB

MD5
d8fdaa379a2a90f655d49d628655c21f

SHA1
1838bc4e16ca082d24817971b2887e42c6ed69ee

SHA256
88d729ae34afb7929adf7d4503dac4b9725b1086647ec5d5ab15a20450f79186

SHA512
fc58ff6279d5fa6beb8386813f82d516d5f1738d21ac4daf2facf0de61e2763f558de6991b08fc247ff0aba74d18e1e6900415b3b98b286da81226129c045730

Download Submit
memory/380-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/380-1122-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download