8e404d181e73cb12173d103352bcea815f143ef1c92ba6d58d878fcda78fb5b2

Analysis

max time kernel
120s
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
05-09-2024 12:33

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General

Target

aa8fa67c68707dd18fe144423d41f0c0N.exe
Size

62KB
MD5

aa8fa67c68707dd18fe144423d41f0c0
SHA1

734fb9ef9db9c961caa3ce4aea849cd33cbd2f86
SHA256

8e404d181e73cb12173d103352bcea815f143ef1c92ba6d58d878fcda78fb5b2
SHA512

b5d4717450874d2e3c77bbc203eb76fadb58b102cf3a1aad1e5ac1b873bf3580bc2ec999616e0ab2eb5b88bcc31caf31b08a854c542a9ddd12a100087f1076ce
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8IZTkb/b8Qn7:KQSo7Zgr4Q7

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4666) 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/2188-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000800000002347e-2.dat	upx
behavioral2/files/0x000c0000000220a6-6.dat	upx
behavioral2/memory/2188-935-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.IO.Packaging.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.WindowsDesktop.App.deps.json.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\7-Zip\7z.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\fr-FR\oledb32r.dll.mui.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\PresentationCore.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\directshow.md.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-ul-oob.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART4.BDR.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\host\fxr\7.0.16\hostfxr.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Forms.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\pack200.exe.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.PowerBI.AdomdClient.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CHART.DLL.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_logo.png.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\System\msadc\adcjavas.inc.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.Luna.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\nio.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Private.Uri.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationProvider.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Controls.Ribbon.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\msvcr120.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Century Gothic-Palatino Linotype.xml.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\InkObj.dll.mui.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-debug-l1-1-0.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.AppContext.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial1-ppd.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Retail-ppd.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RHeartbeatConfig.xml.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\msdaprsr.dll.mui.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\cursors.properties.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Windows.Controls.Ribbon.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Collections.Concurrent.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.Design.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Windows.Forms.Design.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\uk\msipc.dll.mui.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.DataAnnotations.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\fonts\LucidaTypewriterBold.ttf.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientPreview_eula.txt.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\WindowsFormsIntegration.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientOSub2019_eula.txt.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationProvider.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\dtplugin\npdeployJava1.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\sspi_bridge.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Resources.ResourceManager.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Compression.Native.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\UIAutomationClient.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-utility-l1-1-0.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.scale-100.png.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\7-Zip\Lang\fi.txt.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ServiceModel.Web.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.ReaderWriter.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Trial-ppd.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_jpn.xml.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ta.pak.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\sunpkcs11.jar.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\PresentationUI.resources.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\nio.dll.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\IFDPINTL.DLL.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial-ppd.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\Alphabet.xml.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_SubTrial-pl.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ppd.xrm-ms.tmp	aa8fa67c68707dd18fe144423d41f0c0N.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	aa8fa67c68707dd18fe144423d41f0c0N.exe

C:\Users\Admin\AppData\Local\Temp\aa8fa67c68707dd18fe144423d41f0c0N.exe
"C:\Users\Admin\AppData\Local\Temp\aa8fa67c68707dd18fe144423d41f0c0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2188

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
62KB

MD5
70ef28108d098968bd996325d4c73785

SHA1
b516c0b4374e426bd0d46b8d9f14d0e4e3d280ea

SHA256
a35ef1206642295d1edabbf199f00a6f7375596a74e6580bb11b0a4d51a7282e

SHA512
8d4aa5cb64c486d54af0a46a4d3e8e0957ef7d32c4e897de23a83c6c37f9c1938433f60bdb574e38ad44b448cb149f23b15b2585fd1a2659ae6ac41046c4c9be

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

Filesize
161KB

MD5
a1f39add1dcf19efeeb0552357b661cd

SHA1
972dbfc99fd92252727927bc9d2e259b38bc8dd4

SHA256
d3198c30fd6cba9d2129f20becd28e012b8d9029ee130fdee9f96b63903dff73

SHA512
a8892e76f40b182507025bdc709eb392ddecd62673ebf3d5ab07b4304f2e08c89fc83f979d732d20c531a0e5705b461adad3b0d1c161083971ab45aa30b8c9f4

Download Submit
memory/2188-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2188-935-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download