a577c4eb5e56956145b062ecb136f66fa0119b58514b02953dbc65b5dc0d430c

Analysis

max time kernel
120s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
16/08/2024, 20:39

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General

Target

f790f2276b556b1730347a29da9d4130N.exe
Size

77KB
MD5

f790f2276b556b1730347a29da9d4130
SHA1

32e03ac62cdf72a7e3755204e0274f6d69fed4b0
SHA256

a577c4eb5e56956145b062ecb136f66fa0119b58514b02953dbc65b5dc0d430c
SHA512

18843b7d189203e0427899c7b06b7909d9dee3785779d7f69b59b2bc8b701f5ef41b3f32b71588383fd2aed0f1b2af263b991c92e8e711d048a1545ed53ae887
SSDEEP

1536:V7Zf/FAxTWY1++PJHJXA/OsIZfzc3/Q8IZ4:fnyiQSo7Z4

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4572) 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/3488-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023491-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/3488-850-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelTellMeOnnxModel.bin.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-white_scale-80.png.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\wsdetect.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\psfont.properties.ja.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_KMS_Client-ppd.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Library\Analysis\PROCDB.XLAM.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-processenvironment-l1-1-0.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemData.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\UIAutomationClientSideProviders.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\javac.exe.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\sw.pak.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\unpack.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jre-1.8\bin\java-rmi.exe.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\cacerts.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-ppd.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\basicstylish.dotx.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Author2XML.XSL.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Input.Manipulations.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-debug-l1-1-0.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\policy\unlimited\US_export_policy.jar.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherVL_MAK-ppd.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\7-Zip\Lang\co.txt.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\7-Zip\Lang\nb.txt.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Common Files\System\msadc\msadcer.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Ping.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\ssvagent.exe.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Grace-ul-oob.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.FileSystem.Watcher.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Windows.Forms.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\PresentationFramework.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-heap-l1-1-0.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Internet Explorer\ja-JP\ieinstal.exe.mui.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ppd.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019DemoR_BypassTrial180-ppd.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\7-Zip\Lang\sa.txt.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Common Files\System\ado\msador15.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Formats.Tar.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\UIAutomationTypes.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\PresentationUI.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\meta-index.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0090-0409-1000-0000000FF1CE.xml.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-ul-oob.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-debug-l1-1-0.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Compression.Native.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.Primitives.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\PresentationUI.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.EventBasedAsync.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\UIAutomationTypes.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\PresentationUI.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-pl.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Excel.Common.FrontEnd.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.reportviewer.winforms.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Common Files\System\msadc\msadcor.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.Uri.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0016-0000-1000-0000000FF1CE.xml.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG_F_COL.HXK.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Java\jre-1.8\bin\ucrtbase.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Franklin Gothic.xml.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.OneNote.OneNote.x-none.msi.16.x-none.xml.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul-oob.xrm-ms.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\1033\VSTOLoaderUI.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-errorhandling-l1-1-0.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Security.dll.tmp	f790f2276b556b1730347a29da9d4130N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\WindowsFormsIntegration.resources.dll.tmp	f790f2276b556b1730347a29da9d4130N.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	f790f2276b556b1730347a29da9d4130N.exe

C:\Users\Admin\AppData\Local\Temp\f790f2276b556b1730347a29da9d4130N.exe
"C:\Users\Admin\AppData\Local\Temp\f790f2276b556b1730347a29da9d4130N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3488

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-1-5-21-4182098368-2521458979-3782681353-1000\desktop.ini.tmp

Filesize
77KB

MD5
d07ae0dc5d89933c85a62012eaa2eefe

SHA1
e96e15913e2b96a57b1ba73b8e8d9ba9e023911b

SHA256
f997d54597adaf6abe82fac5daec1fa50dc54d77164e01fd3ab7271c706b18d1

SHA512
271cb6cdc34b4e6f805d83b070958257bf733412b7919e7f44af7e2a20a86c33e2bceef694d23dd47be49900b10fa4a7d6083c762228efafb855adc4735cf923

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

Filesize
176KB

MD5
49ece31c855535576691c5aa75476420

SHA1
3f7d76117f05ba54f9ef99867157bf3503f6da38

SHA256
44379ff000c7d26c8a55ebb81cd5e46c2056faf9fcb81ae727ee69bb2516dc46

SHA512
39c86fdf103e386f614fb171c5b5f255f0368ad67e45b17f6f0d0335d70350928e0eeb7368ee153918e4363f5c9baa608411a4cd3b10d7050b60c4664ebee373

Download Submit
memory/3488-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3488-850-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download