dbe4237b9854ed6020392c48c7398f2f08a73719cc35d3deb1a42a7cb1d2b19b

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08-09-2024 12:58

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General

Target

9d8181b36e8c12f7a71f83301e25caf0N.exe
Size

92KB
MD5

9d8181b36e8c12f7a71f83301e25caf0
SHA1

264a4928463d8b17a05893b704936071559ad585
SHA256

dbe4237b9854ed6020392c48c7398f2f08a73719cc35d3deb1a42a7cb1d2b19b
SHA512

68fc8843a340d7d73d40f66904e650269fce9c2dfa392ab2ffccb5fadf36dee9047f6f368775410a49b7298072c5f3d8ca28f95379a804ac740f2665adccb92e
SSDEEP

1536:V7Zf/FAxTWY1++PJHJXA/OsIZfzc3/Q8zx4LgLvL:fnyiQSoFc3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4381) 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/3468-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233da-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/3468-800-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk-1.8\jre\bin\server\jvm.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Excel.BackEnd.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-math-l1-1-0.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Encoding.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Input.Manipulations.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Input.Manipulations.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\YEAR.XSL.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\7-Zip\Lang\sr-spl.txt.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\System.Windows.Forms.Primitives.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Xaml.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Trial-ul-oob.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-ppd.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SkypeForBusinessBasic2019_eula.txt.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Accessibility.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\WindowsBase.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription1-ppd.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Grace-ul-oob.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\hostpolicy.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription3-pl.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.et-ee.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\resources.jar.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.en-us.xml.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART4.BDR.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\UIAutomationTypes.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\splash_11-lic.gif.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.proofing.msi.16.en-us.xml.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_MAK_AE-ul-oob.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.AddinTelemetry.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\7-Zip\Lang\it.txt.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Drawing.Primitives.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Windows.Forms.Design.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\freebxml.md.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\UIAutomationTypes.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-GB\tipresx.dll.mui.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.NETCore.App.runtimeconfig.json.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationClient.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\AugLoop\bundle.js.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.NETCore.App.runtimeconfig.json.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Security.Permissions.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\WindowsFormsIntegration.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Grace-ul-oob.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-file-l1-2-0.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Common Files\Services\verisign.bmp.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\PresentationFramework.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\System.Windows.Controls.Ribbon.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\icudtl.dat.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\nl-NL\tipresx.dll.mui.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\net.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\libpng.md.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail3-ppd.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial4-pl.xrm-ms.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ko-kr.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.Queryable.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Intrinsics.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jpeg.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\WindowsAccessBridge-64.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\unlimited\US_export_policy.jar.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Concurrent.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\PresentationCore.resources.dll.tmp	9d8181b36e8c12f7a71f83301e25caf0N.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	9d8181b36e8c12f7a71f83301e25caf0N.exe

C:\Users\Admin\AppData\Local\Temp\9d8181b36e8c12f7a71f83301e25caf0N.exe
"C:\Users\Admin\AppData\Local\Temp\9d8181b36e8c12f7a71f83301e25caf0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3468

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-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini.tmp

Filesize
92KB

MD5
7cb3383abda23dbaf295fd3a79add207

SHA1
9fcd36ff02db973411fe10586677669743c8e722

SHA256
893242ffc9f1af58c9cf69ddf488c2a2825553b6f4390984fe5ed487e07ddb21

SHA512
6ab69ec8b3ad8b7606447a47f628eb7c5984ddc6cf438b954dabfd415e697739a87250966ccc228e16240ed4e19218405f30224a7d96c3973b4fd4f9f09b82ec

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

Filesize
191KB

MD5
ef06e1c9eb2ec67ca36d398fc9a73e67

SHA1
86ddc2e6db228d94bcf7b137e140e73853514c5a

SHA256
566b15d91cccb337d8561290ece0e5fbc55b182ad1ac2961a03720075d599adc

SHA512
dfac70edc0e8327b2afdce19b602c59f10800cbff1fd4e1b6c947f3c705211011e774612990782707e5c01b825d3f56e94fd616c984feaa20e6fbd7579a3bd36

Download Submit
memory/3468-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3468-800-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download