8855e66cab61686eb9d46b7948b85cb49c43aab30154eb875598e193df7bb1d8

Analysis

max time kernel
120s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2024, 03:14

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General

Target

840f5c8cac312cc7f6ba6327ef8ac780N.exe
Size

25KB
MD5

840f5c8cac312cc7f6ba6327ef8ac780
SHA1

dce66da29555711ce73b1f82056e477bc887d27e
SHA256

8855e66cab61686eb9d46b7948b85cb49c43aab30154eb875598e193df7bb1d8
SHA512

0668196292fc898cd7bb7fbfff945fb6eff6b578da563b9879ba857aa3960ccfe718f316655744e5d7bb97d1026b88f42b50222fe00268839dfa62e3ed4b4d35
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI9GyeAJ5/AJzeAJ5/AJF:CTW7JJ7TEk

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4718) 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/4436-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000900000002347b-2.dat	upx
behavioral2/files/0x000400000002291b-6.dat	upx
behavioral2/memory/4436-1007-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.el-gr.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.TextWriterTraceListener.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Windows.Input.Manipulations.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Concurrent.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.MemoryMappedFiles.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Transactions.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial-ppd.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Controls.Ribbon.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PenImc_cor3.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Windows.Input.Manipulations.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-oob.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Author2XML.XSL.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerPoint.PowerPoint.x-none.msi.16.x-none.xml.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\micaut.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.CompilerServices.Unsafe.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationUI.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ul-phn.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CHART.DLL.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSVCP140_APP.DLL.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\msquic.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-ul-oob.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\System\Ole DB\en-US\msdasqlr.dll.mui.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-private-l1-1-0.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\MEIPreload\preloaded_data.pb.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ucrtbase.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\PresentationFramework.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\PresentationFramework.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_SubTrial-ul-oob.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\EventSource.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OFFSYMB.TTF.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Controls.Ribbon.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\pack200.exe.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\sunec.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\libxslt.md.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Primitives.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.DispatchProxy.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-ppd.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PSRCHLTS.DAT.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.ConnectionUI.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OneNote\SendToOneNote.ini.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\TabTip.exe.mui.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Memory.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.Design.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationClient.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationClientSideProviders.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Retail-ppd.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.StackTrace.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ppd.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ul-oob.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-pl.xrm-ms.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\PresentationCore.resources.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xmlresolver.md.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\Microsoft.Office.Tools.Excel.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\policy\unlimited\US_export_policy.jar.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\tabskb.dll.mui.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\TabIpsps.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\Common Files\System\msadc\msadco.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.CoreLib.dll.tmp	840f5c8cac312cc7f6ba6327ef8ac780N.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	840f5c8cac312cc7f6ba6327ef8ac780N.exe

C:\Users\Admin\AppData\Local\Temp\840f5c8cac312cc7f6ba6327ef8ac780N.exe
"C:\Users\Admin\AppData\Local\Temp\840f5c8cac312cc7f6ba6327ef8ac780N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4436

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-1-5-21-1302416131-1437503476-2806442725-1000\desktop.ini.tmp

Filesize
25KB

MD5
e909fe49f1662fc11bcb93b07d4d4994

SHA1
fa3b529f744eb496dd4b383cfc7defcf3d34629f

SHA256
5ffac9b3e1b2c2a7738c47ca45855ff1a6f2ecc159f471ca85dc7ab0153e4c66

SHA512
992eb4e7a672e131504251da7d878e78a6f2e421920fcd1148ffd17059977ba76d35b52ecea9db6f30f01455c37b35ebcdce074c971fe575692aed401c47c74c

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

Filesize
124KB

MD5
4f3201e8a67e8375d2b25f02dc83a0cb

SHA1
7f8ef6e53894aa874d2f550167482065e8233970

SHA256
43d4644bf783e179683d78a3fef05d55f35ad220790e8f1d5cbd2cc58a9657d5

SHA512
3598f90ddbd4edb04b20d9cb96dfcbb9cb38150733f1de19a454e01c4dd9c965c8c70a002b73f5d3ab4afef80d7987b5dbce907a414b1e791c5420ef34930795

Download Submit
memory/4436-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4436-1007-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download