Analysis
-
max time kernel
149s -
max time network
134s -
platform
windows10-2004_x64 -
resource
win10v2004-20250502-en -
resource tags
arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system -
submitted
29/05/2025, 10:01
Behavioral task
behavioral1
Sample
2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe
Resource
win11-20250502-en
General
-
Target
2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe
-
Size
38KB
-
MD5
ffe5d3a78b5d45ba66dc102388e5b6ca
-
SHA1
adb6b804e04f17ebf99e916fa0ace43fbcbf1bb2
-
SHA256
2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5
-
SHA512
80a5365df056a45816704035daef2f8cb9500a7259b4ec2ccd4f288303624dd34e8cc48738c4b7e19f78fed5f8a7d769ffe94fd2767e1fd450f9a578e0375a58
-
SSDEEP
768:s7BlpppARFbhdLz8ae+rOn8ae+rOfXqJ7gJ7ITr:s7ZppApdIISJ7gJ7c
Malware Config
Signatures
-
Cosmu family
-
Detects Cosmu payload 2 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/files/0x00060000000236f9-1.dat family_cosmu behavioral1/files/0x000400000001eea5-5.dat family_cosmu -
Renames multiple (5198) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
-
Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\Microsoft Office\root\Office16\1033\CT_ROOTS.XML.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\7-Zip\Lang\mr.txt.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Common Files\System\msadc\msadds.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.ComponentModel.TypeConverter.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\System.Windows.Forms.Primitives.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Design.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\fr\System.Windows.Forms.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevation_service.exe.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\TipTsf.dll.mui.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Xml.Linq.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pt-BR\ReachFramework.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\javafx\public_suffix.md.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ppd.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp3-ul-phn.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\offsymk.ttf.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-conio-l1-1-0.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ul-phn.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-pl.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremDemoR_BypassTrial365-ppd.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Trial-ul-oob.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-80.png.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\attach.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME.txt.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-ul-oob.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\PPT_WHATSNEW.XML.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\ReachFramework.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\PresentationUI.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-synch-l1-1-0.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ul-oob.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-ul-phn.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\MEDIA\CLICK.WAV.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\PresentationUI.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Milk Glass.eftx.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Trial-ul-oob.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\api-ms-win-core-file-l2-1-0.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-white_scale-100.png.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\vi\msipc.dll.mui.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\include\win32\jni_md.h.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp4-ppd.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\rsod\proof.es-es.msi.16.es-es.boot.tree.dat.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Common Files\microsoft shared\ink\en-US\micaut.dll.mui.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Common Files\System\msadc\en-US\msdaprsr.dll.mui.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\legal\javafx\glib.md.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\cmm\CIEXYZ.pf.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\bin\dt_socket.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\lib\cmm\GRAY.pf.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_LinkDrop32x32.gif.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.OData.NetFX35.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Windows.Forms.Primitives.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Diagnostics.EventLog.Messages.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\sound.properties.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\VisualElements\SmallLogo.png.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\bcel.md.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Trial-ppd.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-pl.xrm-ms.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\MEDIA\BOMB.WAV.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.Tasks.Parallel.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\tr\UIAutomationProvider.resources.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Java\jdk-1.8\legal\jdk\freebxml.md.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Office.PowerPivot.ExcelAddIn.tlb.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-white_scale-140.png.tmp 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.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 2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe"C:\Users\Admin\AppData\Local\Temp\2e1f586697c83304478107b3553d5bc87f86833676fb84c2dcb837358369aaa5.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4792
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
38KB
MD51af51b178a8189099b0157883b61d966
SHA1b3e73a101315566582e695b9821846342c4d28df
SHA25636306b3205f7029d6de8d673bf25989da6d5fe2a84e9e1dafdadb8aa3cb5f190
SHA512a5e44575c58969e2161cf91190e36c42e2dd66e63557e49aefe89af5c50aaa6600342821da11d06731a9756fac4434aa251480b51b4dc4249306b6d39301ff5a
-
Filesize
124KB
MD56f31bd01fc83eb42e5c87812e37ed0dd
SHA1981f161d187cad691c574fe6cc3b598e3b96da79
SHA2565be2334601a08ecc6806d3a0c342e6f1f132d5373446c277ff65732f5391b1db
SHA5127f7822ed31e029e21af56b48d1bc3b214787750aa005cb663bf043854049250462eb4bd0fae7a66ba125761c795a85f8bb47e4bb6b89ca40614ff2b5c6535d38