e1a5ff8c0c43ee3bdddfbb49798ed640fdc609fbf4d69593fc83efc5883e6eb2

Analysis

max time kernel
119s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/09/2024, 23:08

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General

Target

41f203994ca94ba01c98df4ea9ece5a0N.exe
Size

75KB
MD5

41f203994ca94ba01c98df4ea9ece5a0
SHA1

d6f4cd53db6f01432b898186dec235351f493a2b
SHA256

e1a5ff8c0c43ee3bdddfbb49798ed640fdc609fbf4d69593fc83efc5883e6eb2
SHA512

58526a5ab8fe638b04f8ec5bcdfef44fa5ec36b0b839bdccb59788ab82db03d7eb073e485defbf041ff307985f402cae680306a130f113bcd07cd738cc7559f0
SSDEEP

768:a7BlpyqaFAK65euBT37CPKKDm7EJJ1EXBwzEXBwdcMcI99BT37CPKKdJJ1EXBwz8:a7ZyqaFAxTWbJJ7TlTW7JJ7T+

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4639) 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/2816-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023458-2.dat	upx
behavioral2/files/0x000400000002291b-6.dat	upx
behavioral2/memory/2816-900-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Loader.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\resources.jar.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription4-pl.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Picasso.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\SubsystemController.man.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.Tracing.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\DirectWriteForwarder.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\MSSRINTL.DLL.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_w1\WA104381125.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\icu.md.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\cmm\CIEXYZ.pf.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription5-ppd.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7fr.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32mui.msi.16.en-us.xml.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial4-pl.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.lv-lv.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\it-IT\msinfo32.exe.mui.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Controls.Ribbon.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Console.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\fonts\LucidaBrightRegular.ttf.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Trial-ppd.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\MSOSEC.XML.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.scale-140.png.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\TipTsf.dll.mui.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationClient.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\ReachFramework.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_KMS_Client-ul.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Grace-ppd.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Tasks.Extensions.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\WindowsBase.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\bci.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\sunpkcs11.jar.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail2-ppd.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Document.XmlSerializers.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql90.xsl.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Forms.Primitives.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\UIAutomationTypes.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Cambria.xml.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_MAK_AE-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\PresentationCore.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription4-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\casual.dotx.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\7-Zip\7zG.exe.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ms-my.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msdaremr.dll.mui.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Web.HttpUtility.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\DRUMROLL.WAV.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsFormsIntegration.resources.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\word2013.dotx.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.CSharp.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jabswitch.exe.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-stdio-l1-1-0.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\STSLIST.CHM.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.Xml.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\JavaAccessBridge-64.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\msvcp140.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Retail-ul-oob.xrm-ms.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ospintl.dll.tmp	41f203994ca94ba01c98df4ea9ece5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_ghost_school.png.tmp	41f203994ca94ba01c98df4ea9ece5a0N.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	41f203994ca94ba01c98df4ea9ece5a0N.exe

C:\Users\Admin\AppData\Local\Temp\41f203994ca94ba01c98df4ea9ece5a0N.exe
"C:\Users\Admin\AppData\Local\Temp\41f203994ca94ba01c98df4ea9ece5a0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2816

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
76KB

MD5
3e88b5e56d8892927d7feea131a90243

SHA1
27ad837c8b23c3a98da3cf47e723e5158227f2da

SHA256
5110436bd34d7d89654b7ad285a83d33b2d7c7857abd803d09f5c7853dba25b7

SHA512
9f154e044d1ecf270da6b973cba7396681a417667193e27c38e21fdd97ff0624a1f438494ea8f422daea823865e1f5760ce7ad0c52d9513c8fa201e8b96dc694

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

Filesize
174KB

MD5
36b43439bb1687989843fd8f418c8ebf

SHA1
5c174b9e2b609cfa5402ff1c9b4412a2344f2114

SHA256
59481ecad7abc0bfa466abdfc12f9344600ef6e710e5535b3c0374a42b674a9d

SHA512
b175bba87ba5040e748b8cb6eae3f339a44ce427521e206de1de2f57e59c02c10dfe57882aa64221163fd5516988b7d98050f36933259d883b798986b83bc6ee

Download Submit
memory/2816-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2816-900-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download