9d980e9c408f355a9af3f863d32674c8c42602c9a574c07255f546fa0a90c343

Analysis

max time kernel
120s
max time network
114s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 16:21

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General

Target

b2d41527ea473aeecba77e4e0f8e9140N.exe
Size

83KB
MD5

b2d41527ea473aeecba77e4e0f8e9140
SHA1

bac98d3af6ab3c017758ca256070dd8e5fc5812b
SHA256

9d980e9c408f355a9af3f863d32674c8c42602c9a574c07255f546fa0a90c343
SHA512

90fbfb9451c4cb7679fd31d76f437e51a3c18cd36ee7d08b9b1bdc84f2f6fe42e7c183fb6b5950c1d28d5e5bf18e269db22d13f11a38cbda34118b8b8d5af197
SSDEEP

1536:V7Zf/FAxTWY1++PJHJXA/OsIZfzc3/Q8IZTkb/b8QW:fnyiQSo7Zgr4QW

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4650) 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/3600-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233fa-2.dat	upx
behavioral2/files/0x000c0000000220a6-6.dat	upx
behavioral2/memory/3600-902-0x0000000000400000-0x000000000040B000-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.ComponentModel.Primitives.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\PresentationUI.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\System\msadc\msadco.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceModel.Web.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\WindowsBase.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-ul-phn.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-phn.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Retail-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.OData.NetFX35.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\msvcr120.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Metadata.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\WindowsFormsIntegration.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ul.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\WindowsBase.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\fi.pak.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial5-pl.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msvcp120.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\UIAutomationClientSideProviders.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\UIAutomationClientSideProviders.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jre-1.8\bin\management.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Extensions.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Thread.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Trial-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\System\msadc\msadce.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jre-1.8\bin\keytool.exe.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Grace-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\WindowsFormsIntegration.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\packager.jar.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ul.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019MSDNR_Retail-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipskor.xml.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\System.Xaml.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\7-Zip\Lang\an.txt.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Xaml.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-ul-phn.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\PresentationFramework.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libxslt.md.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\System.Windows.Forms.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp2-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.Win32.SystemEvents.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\ecc.md.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-006E-0409-1000-0000000FF1CE.xml.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOMessageProvider.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore_amd64_amd64_6.0.2724.6912.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\UIAutomationClient.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jsdt.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest1-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\System\Ole DB\es-ES\msdasqlr.dll.mui.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\PresentationCore.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusE5R_Subscription-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\System.Runtime.InteropServices.RuntimeInformation.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Excel.DataWarehouse.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\hi\msipc.dll.mui.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Data.DataSetExtensions.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\UIAutomationProvider.resources.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial2-ppd.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\ja-jp.xml.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\dotnet\host\fxr\6.0.27\hostfxr.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l1-2-0.dll.tmp	b2d41527ea473aeecba77e4e0f8e9140N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019MSDNR_Retail-ul-oob.xrm-ms.tmp	b2d41527ea473aeecba77e4e0f8e9140N.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	b2d41527ea473aeecba77e4e0f8e9140N.exe

C:\Users\Admin\AppData\Local\Temp\b2d41527ea473aeecba77e4e0f8e9140N.exe
"C:\Users\Admin\AppData\Local\Temp\b2d41527ea473aeecba77e4e0f8e9140N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3600

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-1-5-21-523280732-2327480845-3730041215-1000\desktop.ini.tmp

Filesize
84KB

MD5
97a0faca7c69216e20370a6b9426e814

SHA1
0d38c29f8fab3e092d581663444c8f3134b5b32f

SHA256
1b6dadd6a27c2de6f3ee9caa6fde11cc464664bffb82111eaa062d2a0114df31

SHA512
4a89ff5ba4f9a47b8f64e8d4dca3b3d9d2972fe6c97425f116a16336b8def00275ec733fab8cb4404b20c5fa4eaaac024c12d562c0a214dad1898e9a9b6f2f46

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

Filesize
182KB

MD5
97f7773f018363141126392b10fbb4b8

SHA1
0f4f57ffe08ec64c7ea622a23fd32aea978eed98

SHA256
0b9193ee6673a72083d40d8cce1d5e73e69a00bd58a199dee5acec0d0c363c44

SHA512
1b4035b2175f4154f8a2e909843eecd352e503fe6366f2f30d772dda3bb7f98c3201d16144941a62b31d0a930f4b486bd088bc695b5306adeed4166f7b3c6e89

Download Submit
memory/3600-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3600-902-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download