Analysis
-
max time kernel
150s -
max time network
140s -
platform
windows10-2004_x64 -
resource
win10v2004-20250619-en -
resource tags
arch:x64arch:x86image:win10v2004-20250619-enlocale:en-usos:windows10-2004-x64system -
submitted
03/07/2025, 05:26
Static task
static1
Behavioral task
behavioral1
Sample
05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe
Resource
win10v2004-20250619-en
Behavioral task
behavioral2
Sample
05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe
Resource
win11-20250619-en
General
-
Target
05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe
-
Size
276KB
-
MD5
82393db8e99c15a391c5be37af988267
-
SHA1
2105ab908b23e88901e56ffaef98ec75716b3e5e
-
SHA256
05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983
-
SHA512
5afecc4357747729ae39cfb180f6c84cf06b04cc4af7c5378cc6902f1ce7496bb804b232222854cec65c923b629f8d62dae3a2da4fab6046b600a01de6b3b563
-
SSDEEP
6144:g3P3Wg9pU+xWkDr468eIDFx1xJsktJ/PHqC:t+//eeyx1
Malware Config
Signatures
-
Cosmu family
-
Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral1/memory/4860-663-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (4661) 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\Bibliography\Style\GB.XSL.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-140.png.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\WordR_Trial-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\Microsoft.VisualBasic.Forms.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\EXPTOOWS.DLL.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\PresentationFramework.AeroLite.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Personal2019DemoR_BypassTrial180-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.ObjectModel.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Input.Manipulations.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\zh-Hant\System.Windows.Forms.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019DemoR_BypassTrial180-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Parallel.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\ReachFramework.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\PresentationUI.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessDemoR_BypassTrial365-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_MAK_AE-ppd.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\7-Zip\Lang\sl.txt.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\PresentationUI.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-file-l1-2-0.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-processthreads-l1-1-1.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jre-1.8\lib\accessibility.properties.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\PresentationUI.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\vcruntime140.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jre-1.8\legal\javafx\directshow.md.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProDemoR_BypassTrial180-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG.HXS.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\csi.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\es-ES\msinfo32.exe.mui.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Threading.Channels.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-heap-l1-1-0.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Grace-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-ul-oob.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-80.png.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Windows.Input.Manipulations.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\PresentationCore.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-convert-l1-1-0.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\PresentationUI.resources.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Internet Explorer\uk-UA\iexplore.exe.mui.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jdk-1.8\bin\rmic.exe.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\AppXManifest.xml.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-convert-l1-1-0.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-multibyte-l1-1-0.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems32.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Java\jre-1.8\legal\jdk\icu.md.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Gallery.thmx.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_MAKC2R-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\linessimple.dotx.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\Library\Analysis\PROCDB.XLAM.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\WindowsFormsIntegration.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_MAKC2R-ul-phn.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\7-Zip\Lang\cs.txt.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.VisualBasic.Core.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Private.CoreLib.dll.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_Retail-pl.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ppd.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ul-phn.xrm-ms.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Microsoft Office\root\Office16\MSZIP.DIC.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\fr-FR\msinfo32.exe.mui.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe File created C:\Program Files\Common Files\System\Ole DB\it-IT\msdasqlr.dll.mui.tmp 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.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 05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe"C:\Users\Admin\AppData\Local\Temp\05883a6b3b770d06f9bfbac1145cfe5107ce748842dbf15660e56c6b5ab88983.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4860
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
276KB
MD52f505940cef04def24e81e740f75c8a4
SHA1375c05704e7a00d9cb44ea9b7293ab8a4d9de200
SHA25669d3b297a18702f71b2e736953f37a84fd281e888fc5caaad1dc23f97e68fc78
SHA512063859b123cdb517c1093dc51883574cce7ac95f3bd193b150d904fe62df7d89d2c716662fed7a5c702044853b46f5bbccd07d2ba6af8019e452a3cd4cddc4d6
-
Filesize
357KB
MD5ac51cccef84a47ea43bc659c7ae130dd
SHA1dbabc6c453a4486ea26fee5ae93d5412bed5b42d
SHA2567e4771a0839674c3307cf359a29faf5cd0aad6d291271f825699212b8ae4792f
SHA512df0c8cda3c001507eda199fd8a2b302595309c0130acf5f578822365c01b1ce4c4613e06e65c9857bae89b74ae0e1e3c3c04d0150d8d107f8586753ed1e447a6