Analysis Overview
SHA256
b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0
Threat Level: Likely malicious
The file b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0 was found to be: Likely malicious.
Malicious Activity Summary
Renames multiple (5317) files with added filename extension
Executes dropped EXE
Drops file in System32 directory
Drops file in Program Files directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V16
Analysis: static1
Detonation Overview
Reported
2025-05-18 09:59
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-05-18 09:59
Reported
2025-05-18 10:02
Platform
win10v2004-20250502-en
Max time kernel
150s
Max time network
133s
Command Line
Signatures
Renames multiple (5317) files with added filename extension
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\_createdump.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\Zombie.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\Zombie.exe | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | N/A |
| File created | C:\Windows\SysWOW64\Zombie.exe | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\pt.txt.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-stdio-l1-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Intrinsics.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.Formatters.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\dt_shmem.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Office 2007 - 2010.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\System\ado\msadox28.tlb.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\PresentationCore.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Marquee.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql120.xsl.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.scale-80.png.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Templates\1033\ChronologicalResume.dotx.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\Help\NamedUrls.HxK.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\System\Ole DB\it-IT\sqlxmlx.rll.mui.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Xml.Linq.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Extensions.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\PresentationCore.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-2-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_OEM_Perp-ppd.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\.version.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\WindowsBase.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\WindowsFormsIntegration.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\limited\local_policy.jar.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Client\C2R32.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\clretwrc.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-console-l1-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\de-DE\ShapeCollector.exe.mui.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.XmlDocument.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-phn.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-ul-phn.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\FOLDER.ICO.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\Common AppData\Microsoft Help\MS.GRAPH.16.1033.hxn.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\ACEEXCH.DLL.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.DataAnnotations.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Windows.Controls.Ribbon.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-file-l2-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\hive.xsl.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\cardview-addtotable.png.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\el.txt.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\7-Zip\Lang\tk.txt.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Resources.ResourceManager.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pt-BR\ReachFramework.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\icudtl.dat.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Excel.BackEnd.XmlSerializers.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Core.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationProvider.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationCore.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\WindowsBase.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcr120.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemDrawing.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-convert-l1-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_Retail-pl.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\WindowsFormsIntegration.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\AccessRuntimeR_PrepidBypass-ppd.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Trial-pl.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\Content.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\Zombie.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4300 wrote to memory of 3260 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Users\Admin\AppData\Local\Temp\_createdump.exe |
| PID 4300 wrote to memory of 3260 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Users\Admin\AppData\Local\Temp\_createdump.exe |
| PID 4300 wrote to memory of 1636 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Windows\SysWOW64\Zombie.exe |
| PID 4300 wrote to memory of 1636 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Windows\SysWOW64\Zombie.exe |
| PID 4300 wrote to memory of 1636 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Windows\SysWOW64\Zombie.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe
"C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe"
C:\Windows\SysWOW64\Zombie.exe
"C:\Windows\system32\Zombie.exe"
C:\Users\Admin\AppData\Local\Temp\_createdump.exe
"_createdump.exe"
Network
| Country | Destination | Domain | Proto |
| GB | 2.18.27.76:443 | www.bing.com | tcp |
| GB | 2.18.27.76:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | c.pki.goog | udp |
| GB | 142.250.178.3:80 | c.pki.goog | tcp |
Files
C:\Users\Admin\AppData\Local\Temp\_createdump.exe
| MD5 | a05b36f6129223951282f9df776761b1 |
| SHA1 | ec87fa41a670cffa5d77f64366fe109278661f2c |
| SHA256 | 5113e7ae92f3a7aebc7f8e363209866d4d743b06a26c67e0886979a56fd3a10d |
| SHA512 | 38b588b28057994305a3abc37d98770ab7ff905cba6da35e91b2936b99823955fc91b90a23174d53337dd62e320b9bac066b76734bf657de9fad6d37071c70da |
C:\Windows\SysWOW64\Zombie.exe
| MD5 | 81fc313583ccf1af2e200d929f8296ac |
| SHA1 | 367ebe8c9279cfe7ff9bcfcfb79abe2a84ab5aac |
| SHA256 | 2db302b332c82e45bb493ba1eb081041da9ec60c861ec82c65d6f5177d13b9d7 |
| SHA512 | 628bb9220a1aececfeae1173e0efdf9e6eb21e5304f0a40492c3339c11b70c403376a368189ccf4a71ed0d3600c7ccc196531b2c2bb3cf92bd33187b35d1534c |
C:\$Recycle.Bin\S-1-5-21-1153236273-2212388449-1493869963-1000\desktop.ini.exe
| MD5 | f1180d180a99b3fb1478812180449848 |
| SHA1 | 1921e192e5162652c7c8fbf16d1359ebb371475b |
| SHA256 | f805c118fe08592535338198f3e10187d1b831b07494afaff3714de9dbbd7691 |
| SHA512 | b40614f24830eccbfcef834ae1e655f6e4a5f01ede57e0c2fbdc8c714977baf523fcf6b2021a8dc72765d69b1593463912dfa0bb251a009c98944b7e1a98eff7 |
memory/4300-23-0x0000000000400000-0x0000000000407000-memory.dmp