Analysis
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max time kernel
149s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20250502-en -
resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system -
submitted
05/06/2025, 07:27
Behavioral task
behavioral1
Sample
0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe
Resource
win10v2004-20250502-en
General
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Target
0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe
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Size
71KB
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MD5
184fbd147e905c578080872c45b9c023
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SHA1
2d091ba90484937a93570a2526bac8b52c8ccce0
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SHA256
0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621
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SHA512
d3467847da1eb5d9425c6adf3473f210d8a766a0cf3cbfe45ab08c99ee2a1a8d1aa356980c046c9cd9572e050529559292f184c3fdee2e3efd6600d9689364f1
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SSDEEP
1536:s7ZppApdIIC0/2YtBUOqHCQNm2zs+dD8dlxhiCW1aQx6:spWpI0/2YjUOqHxNmMdIdlxhu0
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/files/0x000700000001e6af-1.dat family_cosmu behavioral1/files/0x000400000001ee99-5.dat family_cosmu -
Renames multiple (5030) 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\Common Files\microsoft shared\ClickToRun\AppVScripting.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\ReachFramework.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Internet Explorer\hmmapi.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\legal\javafx\mesa3d.md.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Retail-ul-phn.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ul-phn.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\MSOUC_K_COL.HXK.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\PEOPLEDATAHANDLER.DLL.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Common Files\System\ado\msadomd.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\mscordaccore.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\ReachFramework.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-filesystem-l1-1-0.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Grace-ppd.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Forms.Design.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\ReachFramework.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\System.Xaml.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-profile-l1-1-0.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest3-pl.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\IGX.DLL.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\7-Zip\Lang\ne.txt.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\ReachFramework.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Input.Manipulations.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Threading.AccessControl.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\cs\System.Xaml.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\Locales\zh-CN.pak.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Trial-pl.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Trial-ul-oob.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVClientIsv.man.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.FileVersionInfo.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\clretwrc.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\sql120.xsl.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-80.png.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.scale-100.png.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\NPSPWRAP.DLL.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\[email protected] 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_MAK-ppd.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\MML2OMML.XSL.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE_COL.HXC.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-100.png.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial1-ppd.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-black_scale-180.png.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\MANIFEST.XML.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\7-Zip\Lang\ca.txt.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Common Files\System\Ole DB\es-ES\oledb32r.dll.mui.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\bin\jconsole.exe.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-pl.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Excel.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\ja\msipc.dll.mui.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\7-Zip\Lang\nn.txt.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Common Files\microsoft shared\ink\en-US\TipRes.dll.mui.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\javafx\public_suffix.md.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_ConsumerSub_Bypass30-ppd.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PG_INDEX.XML.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\ja\System.Windows.Forms.Design.resources.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\jdk\relaxngcc.md.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_TW.properties.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Java\jre-1.8\bin\jsound.dll.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Violet II.xml.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_KMS_Client-ppd.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-pl.xrm-ms.tmp 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.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 0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe"C:\Users\Admin\AppData\Local\Temp\0892a3e368f8ad141d218e880613462374b3f9906ce3faff977952677c3af621.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4100
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
71KB
MD583ddf28db65cdec34bf2f32c94598406
SHA1df138d1610a2a9f79c0c19c6ac76d5efabbba099
SHA25654ac0993cbdf893baf83a35f6e191ee04807b5ab0338386423c3e79a05374901
SHA5121a2b1321339b61b5665f7f2752fc2809dda9a6415a721435e3271199b10a41be8e03919599e1c09fa649f9f70a3141759f7fb88ba95135f44c1176aa5b5b1b00
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Filesize
157KB
MD5292050d799e90028ba59e7429b573ad8
SHA1d3b1b00c72e12355d1b2961ed229e64844943980
SHA25645ec1fc604b9ba9d1a9367e2a7acbe71552c49204eee70a24b5e4ef964933493
SHA51255f48724917e9cf9b63290e7f197bd12db9aeb965fb22ce09d37f321b92d14a7b5e947a0c0ddbac7f70a8d2156c8bbee9bbf73cb89c4bec4256b4540c799d2c7