Analysis
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max time kernel
150s -
max time network
103s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
29/05/2025, 11:58
Behavioral task
behavioral1
Sample
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Resource
win11-20250502-en
General
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Target
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
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Size
133KB
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MD5
d01f29ca822ea6d0b65d4997aa8252a9
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SHA1
e3800ae952beed650dd328008460d730395d21f7
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SHA256
59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d
-
SHA512
b2614f72ab9299e3bff94e6a2c8684d8733d4373c67b2d3b254f257109d25044d9eb392478c9efa708b00492f36f51c2faec70a6ab7c5bf334dbb8d845e2a6a7
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SSDEEP
1536:s7ZppApdIIXJUDJUzreQvow2GIIXJUDJUzreQvowe:spWp1reVwDreVwe
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 4 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/memory/1636-0-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu behavioral2/files/0x001e00000000d3d6-2.dat family_cosmu behavioral2/files/0x00040000000270a7-6.dat family_cosmu behavioral2/memory/1636-828-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (4860) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationCore.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Internet Explorer\SIGNUP\install.ins.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp5-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Spatial.NetFX35.V7.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\7-Zip\Lang\el.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\7-Zip\Lang\mng2.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-debug-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Principal.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Windows.Forms.Design.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\it\UIAutomationClient.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\ms.pak.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\include\win32\bridge\AccessBridgeCalls.c.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\PresentationUI.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Forms.Design.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\System.Windows.Controls.Ribbon.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\bcel.md.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL109.XML.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-handle-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy.jar.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalDemoR_BypassTrial180-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_MAKC2R-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.PowerBI.AdomdClient.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.IO.Compression.FileSystem.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\UIAutomationClientSideProviders.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessDemoR_BypassTrial365-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\AdeModule.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encoding.CodePages.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Web.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Net.Requests.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-ul-phn.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\UIAutomationClient.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\vcruntime140_cor3.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Java\jre-1.8\lib\jce.jar.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp6-pl.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.bg-bg.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\System\msadc\msdarem.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.TypeConverter.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\WindowsBase.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_MAK_AE-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\ClientARMRefer_eula.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Common Files\microsoft shared\ink\pl-PL\tipresx.dll.mui.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Console.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\Microsoft.VisualBasic.Forms.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp2-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_Subscription-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTest-ul-oob.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Xaml.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-pl.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-140.png.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\7-Zip\Lang\fi.txt.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Extensions.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\WindowsBase.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Forms.Design.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00A1-0000-1000-0000000FF1CE.xml.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O17EnterpriseVL_Bypass30-ppd.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Trial2-pl.xrm-ms.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.FileSystem.Watcher.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.resources.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationCore.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-private-l1-1-0.dll.tmp 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe"C:\Users\Admin\AppData\Local\Temp\59b2f69e78dda87f83f15f064a25e40551c62878cebfc66e541f6bd79e67d42d.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1636
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
133KB
MD5c572d88c68721eb90d68525c78b4b42c
SHA1ab40795e7a1df08374b819a8a6c47bfbf0787fb3
SHA256a2b23e49c7d8212372e311c881794077a15f7188da370ecfd8197a954172aeae
SHA512a09a86d3681ed3f989b112bedebded3b24683a182841bd449111c288554ecf70593a22455a5d84291bccbcb1542f932c4be7d33f4a92c73d237dfa3a566385cb
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Filesize
215KB
MD5e3c5d8f638b47ddf1449ec98c0770030
SHA1bffd78449867005c4813b30749c88ef10ab6c77c
SHA256998d631e5fc66739a41a90d7342cdfcdf59d7f952bb7349c1e8254545d5b7866
SHA512f3871258d76c6fe8764d83205c87b33eb73962f76711983763fc087552a6808264d0f5e50e343fccadb3f244cb04a010ddf55381f7bbf4d4cc1f20b1e6c336e8