f587943f28effcf1316cf1c2e8c08a99fd6b3296e5b8c6e242f2e0e1f048507e

Analysis

max time kernel
119s
max time network
84s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/08/2024, 05:48

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General

Target

ea38c6d040c23c42f26b2fd5da47e640N.exe
Size

50KB
MD5

ea38c6d040c23c42f26b2fd5da47e640
SHA1

fa8cc231866d98e31ce2d30516b20c02e7882c94
SHA256

f587943f28effcf1316cf1c2e8c08a99fd6b3296e5b8c6e242f2e0e1f048507e
SHA512

627b7d3bd1058897154982eae1d31c7570341010a9f2284d15783b2acaf80a6a82c1d1b2f7a5500c59c8ef75c659e8d5a6e6527e9caf25f4a8484fe42eae4260
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJ1EXBwzEXBwdcMcI9UiO:V7Zf/FAxTWoJJ7TiiO

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4651) 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/4496-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233e3-2.dat	upx
behavioral2/files/0x00040000000228de-6.dat	upx
behavioral2/memory/4496-910-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp3-ul-phn.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\relaxngcc.md.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.IsolatedStorage.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-process-l1-1-0.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office15\pidgenx.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOMessageProvider.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Loader.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationTypes.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\ReachFramework.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\System.Windows.Forms.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\System.Windows.Input.Manipulations.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework-SystemDrawing.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.InteropServices.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\WPFEXTENSIONS.DLL.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.ReportingServices.Interfaces.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\lib\flavormap.properties.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Forms.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.CodeDom.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\npt.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\tzmappings.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\bin\servertool.exe.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ppd.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-ppd.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\InkObj.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Forms.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\vcruntime140_cor3.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jfxmedia.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\javafx-mx.jar.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\lib\cmm\sRGB.pf.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Aspect.xml.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Retail-pl.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\7-Zip\Lang\ar.txt.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientPreview_eula.txt.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ppd.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\PresentationUI.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Grace-ppd.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTest-pl.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019MSDNR_Retail-ul-phn.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Forms.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_OEM_Perp-ul-oob.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_OEM_Perp-ul-phn.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelCtxUIFormulaBarModel.bin.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.AeroLite.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-handle-l1-1-0.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsFormsIntegration.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Grace-ul-oob.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Controls.Ribbon.resources.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ServiceProcess.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Loader.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Drawing.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Security.Permissions.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\asm.md.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\messages_ja.properties.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_LinkDrop32x32.gif.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\ja-JP\msinfo32.exe.mui.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_MAK-pl.xrm-ms.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Internet Explorer\iexplore.exe.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Java\jre-1.8\bin\unpack.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientVolumeLicense_eula.txt.tmp	ea38c6d040c23c42f26b2fd5da47e640N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Extensions.dll.tmp	ea38c6d040c23c42f26b2fd5da47e640N.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	ea38c6d040c23c42f26b2fd5da47e640N.exe

C:\Users\Admin\AppData\Local\Temp\ea38c6d040c23c42f26b2fd5da47e640N.exe
"C:\Users\Admin\AppData\Local\Temp\ea38c6d040c23c42f26b2fd5da47e640N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4496

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-1-5-21-2718105630-359604950-2820636825-1000\desktop.ini.tmp

Filesize
51KB

MD5
b10da58aa324fdd0ae63e2a579b8deb1

SHA1
08763afed6c299a27210e4ad00456f372c1bad58

SHA256
e5c4ff86ac6766e7cde5cf50a9aae1689ae707217bae1632e6767c5792dd8795

SHA512
bb7d6a4365cc6a3fc0a6623f850f91b6241ab1f20e2c9323fbd45c76136728afb742d152cd711453494ceb0b60d5c318844145f403d99d0092f52afc65426924

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

Filesize
149KB

MD5
67300b3a4132e4338aa5e317578b2518

SHA1
44577ca2bee86947f2b66e3b9f9ae2019c98e327

SHA256
ac7ef5dc6f19d12fd09813e0aaa65fd2178a80f0a8bbc5fbee5c591afacc6277

SHA512
f5272bbffa9a7ad7f7263f761c7178524857474c2ab830b212b2a8b81f0b904dcb03afe9fb17fd67365b68ee2febdc57fc665660540382a113575db74360362c

Download Submit
memory/4496-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4496-910-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download