Analysis
- max time kernel
150s - max time network
140s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
26/08/2026, 15:32
Behavioral task
behavioral1
Sample
2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
8 signatures
150 seconds
General
- Target 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe
- Size 90KB
- Sample260826-syl8vs1fpc
- SHA256 0f92bb9d6d1740de34f170f06a6a8bf0876888c66d0333afb1513a298a2f7ee0
- MD5 9f0322011c0864875c98cd8ce35b7a62
- SHA1 9f6361ecfb11e0b9aa1d16c24bc4ac28b4f128f0
- SHA512 7fe9b820e831ca529019045314883011648d08659c7ee644b8ad081850a564abdc7017be67d29234b1d5852a61414fc5dabce13ed826a1e5e838eec37c6f6fb4
- SSDEEP 1536:W7ZhA7pApMaxB4b0CY1RW7C/RNhZcGWdz7zpuhC7+6Zghx:6e7WpMaxeb0CY1Y78jhZcGa3zpuC7+6u
- TLSH T111938C13E29280BAD7E6D27445A9B275DAB6F4244735E79B6B448F340F74F80EC2E206
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/files/0x000e000000016cb6-9.dat family_cosmu behavioral2/files/0x000c00000001c61c-13.dat family_cosmu - Renames multiple (4784) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Executes dropped EXE 2 IoCs
pid Process 5340 _AcroTextExtractor.exe 7124 Zombie.exe - Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\Zombie.exe 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe File opened for modification C:\Windows\SysWOW64\Zombie.exe 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.de-de.dll.tmp Zombie.exe File created C:\Program Files\Common Files\System\msadc\es-ES\msadcor.dll.mui.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_OEM_Perp-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pt-br.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.WebSockets.Client.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\UIAutomationProvider.resources.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-pl.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTrial-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Security.Principal.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\UIAutomationClient.resources.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\FORMS\1033\ACTIVITL.ICO.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\clrjit.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-ul-phn.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-80.png.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-console-l1-2-0.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\bin\rmid.exe.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial3-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\AccessRuntime_eula.txt.tmp Zombie.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\sqlxmlx.rll.mui.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\ext\cldrdata.jar.tmp Zombie.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-heap-l1-1-0.dll.tmp Zombie.exe File created C:\Program Files\Java\jre-1.8\lib\meta-index.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-stil.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-pl.xrm-ms.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Security.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\Microsoft.VisualBasic.Forms.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Controls.Ribbon.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\de\PresentationCore.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\System.Windows.Forms.resources.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_KMS_Client-ul.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\FORMS\1033\REC.CFG.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp Zombie.exe File created C:\Program Files\Java\jre-1.8\legal\javafx\gstreamer.md.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteFreeR_Bypass-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\TPN.txt.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.WebHeaderCollection.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Controls.Ribbon.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pt-BR\WindowsFormsIntegration.resources.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\java_crw_demo.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.RegularExpressions.dll.tmp Zombie.exe File created C:\Program Files\Internet Explorer\IEShims.dll.tmp Zombie.exe File created C:\Program Files\Java\jre-1.8\lib\jfr.jar.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_Retail-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessEntryR_PrepidBypass-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\kk-KZ\tipresx.dll.mui.tmp Zombie.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\oledb32r.dll.mui.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\Microsoft.VisualBasic.Forms.resources.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-heap-l1-1-0.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019VL_MAK_AE-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Linq.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\AccessRuntime2019_eula.txt.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\ClientVolumeLicense2019_eula.txt.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\InkObj.dll.mui.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\rtscom.dll.mui.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Compression.FileSystem.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Blue.xml.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp Zombie.exe - System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language _AcroTextExtractor.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Zombie.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 6812 wrote to memory of 5340 6812 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe 90 PID 6812 wrote to memory of 7124 6812 2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe 91
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe"C:\Users\Admin\AppData\Local\Temp\2026-08-25_9f0322011c0864875c98cd8ce35b7a62_elex_wannacry.exe"1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:6812 -
C:\Users\Admin\AppData\Local\Temp\_AcroTextExtractor.exe"_AcroTextExtractor.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5340
-
-
C:\Windows\SysWOW64\Zombie.exe"C:\Windows\system32\Zombie.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:7124
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\$Recycle.Bin\S-1-5-21-1014449518-1831897916-4205727055-1000\desktop.ini.tmp
- Size 46KB
- SHA256 1e193c4c61cabd21376183274f5544632d126797c7e956ce9663c30bbbe01e75
- MD5 74bef9e3ead3fda046f9949534a071b6
- SHA1 62e2881993483b4e66b52f5fdb5e070d16f76ad1
- SHA512 961e15a7fbde79c7e379581f9e72b394f0f63724ac45d980a51cc177fbb03696e87f85548e76178e07218a5abc8a67488081c517c1ab19686e3e3337a0bac922
- SSDEEP 768:W7BlphA7pARFbhM0KW2s9B4b09Xgd7jylZqzpjoc:W7ZhA7pApMaxB4b0CYU
- TLSH T14D230807D15244BDD3EAE078429EBAB5E621F42D9239FC599F108F301EB9F90ED2E518
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\_AcroTextExtractor.exe
- Size 43KB
- SHA256 4161764d6f1930bf9e2ecf33224c63e1110c4d83920ac36ab2e7de61f357035d
- MD5 127d567841241ef2ebc2fefaff056c38
- SHA1 a60c255bd4ab8c155e446ba9ca8f82563a6f4400
- SHA512 8e0ad077d441b2e72b9a31aed9eddcd24a85da0ad8618a74e02717c96759a7be3b5ec61586bdd49b441462054e3757bdc97e8ff5b70feccdabfb600a04060253
- SSDEEP 768:ooqW7C/sqNhZcGGTA6VPdzGEbJOOjmyZk3E0zC72Z6dj3whW:oRW7C/RNhZcGWdz7zpuhC7+6ZghW
- TLSH T195136D233AD180B3DAA357B09865A319CAFFB9705B31839773D8CA590F706C1AC66357
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\SysWOW64\Zombie.exe
- Size 46KB
- SHA256 3a6ab3d3673d5048b95b667d9afbe043f1be1359d7f439a3a9d5b3d6043c569f
- MD5 ad126c2a64c17f1f96beb45641a890c5
- SHA1 76e9107021c9ea33a7b828b86f83cf1bfe340b07
- SHA512 85537d71cbae0a7b1717efa2bc99ba57e5c0b28a4b5c49786df34908ace5d0a0ff18545f71c7da3f4d008ebaec398893e0795aefb2c3e109dd827411e913df4a
- SSDEEP 768:W7BlphA7pARFbhM0KW2s9B4b09Xgd7jylZqzpjo4:W7ZhA7pApMaxB4b0CYQ
- TLSH T1CE230707D15244BDD3EAE078429EBAB5E621F42D9239FC595F108F301EB9F90ED2E518
- MD5 SHA1 SHA512 SSDEEP TLSH