Analysis Overview
SHA256
b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0
Threat Level: Likely malicious
The file b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0 was found to be: Likely malicious.
Malicious Activity Summary
Renames multiple (5257) files with added filename extension
Executes dropped EXE
Drops file in System32 directory
Drops file in Program Files directory
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V16
Analysis: static1
Detonation Overview
Reported
2025-05-18 09:57
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2025-05-18 09:57
Reported
2025-05-18 09:59
Platform
win10v2004-20250502-en
Max time kernel
150s
Max time network
139s
Command Line
Signatures
Renames multiple (5257) 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 created | C:\Windows\SysWOW64\Zombie.exe | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | N/A |
| File opened for modification | 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\vfs\Fonts\private\NIRMALA.TTF.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Collections.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.FileSystem.AccessControl.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\WindowsFormsIntegration.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\es.pak.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jre-1.8\bin\j2pkcs11.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription1-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.Tasks.Dataflow.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\es\System.Windows.Forms.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-file-l2-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\javah.exe.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Grace-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.OleDbProvider.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\OMRAUT.DLL.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Subscription-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ONBttnOL.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.NetworkInformation.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WindowsBase.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\System.Windows.Forms.Primitives.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\vcruntime140.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\lib\deployment.config.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\rsod\excel.x-none.msi.16.x-none.tree.dat.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\7-Zip\License.txt.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\keypadbase.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-file-l1-2-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.Process.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_OEM_Perp-ul-phn.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_SubTest-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-ppd.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-white_scale-100.png.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\PresentationCore.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\ext\access-bridge-64.jar.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\README.html.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-ul-phn.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial5-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.scale-80.png.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Redshift\lib\OpenSSL64.DllA\ssleay32.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\OneNote\prnSendToOneNote.cat.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\ink\en-US\tabskb.dll.mui.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Linq.Parallel.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Slipstream.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\vfs\Fonts\private\BSSYM7.TTF.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\Common Files\System\msadc\fr-FR\msdaprsr.dll.mui.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Web.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework.AeroLite.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Google\Chrome\Application\133.0.6943.60\chrome_100_percent.pak.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-math-l1-1-0.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\bin\schemagen.exe.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\c2rpridslicensefiles_auto.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\lib\cmm\CIEXYZ.pf.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Retail-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Retail-pl.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\1033\ClientARMRefer2019_eula.txt.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Office.PowerPivot.ExcelAddIn.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\Configuration\config.xml.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\rsod\officemui.msi.16.en-us.boot.tree.dat.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\System.Windows.Controls.Ribbon.resources.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\vcruntime140.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Java\jdk-1.8\jre\bin\verify.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ul-oob.xrm-ms.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\microsoft shared\VSTO\vstoee.dll.tmp | C:\Windows\SysWOW64\Zombie.exe | N/A |
| File created | C:\Program Files\Common Files\System\msadc\de-DE\msadcor.dll.mui.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 2356 wrote to memory of 5712 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Users\Admin\AppData\Local\Temp\_createdump.exe |
| PID 2356 wrote to memory of 5712 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Users\Admin\AppData\Local\Temp\_createdump.exe |
| PID 2356 wrote to memory of 3936 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Windows\SysWOW64\Zombie.exe |
| PID 2356 wrote to memory of 3936 | N/A | C:\Users\Admin\AppData\Local\Temp\b265641b1e581318d79f2dc7dbdc8e43640f763b0d9d78fcdb6fde8ebc6579d0.exe | C:\Windows\SysWOW64\Zombie.exe |
| PID 2356 wrote to memory of 3936 | 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 | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | 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-1-5-21-2930597513-779029253-718817275-1000\desktop.ini.exe
| MD5 | c946801f6ad918858a3a545ef87b228e |
| SHA1 | 3e12f77f6f2c92f162adf059d594afe5a26f71ae |
| SHA256 | 53c8973b819e3234d42243e54816fe4ca28ff6676cc087404e8d045d61065c56 |
| SHA512 | e9edc75477eb21328116607fc0a6ba88b57531c0a7ba18d60acd4d63480a597be9bb807fedc4a7b2191f6ff7037d54822dd8a91f6a58e9f18775d3f4828e3bd6 |
memory/2356-23-0x0000000000400000-0x0000000000407000-memory.dmp