Analysis
- max time kernel
150s - max time network
116s - platform
windows11-21h2_x64 - resource
win11-20250502-en - resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system - submitted
28/05/2025, 06:45
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe
Resource
win10v2004-20250502-en
windows10-2004-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe
Resource
win11-20250502-en
windows11-21h2-x64
6 signatures
150 seconds
General
- Target af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe
- Size 34KB
- Sample250528-hh7jraswas
- SHA256 af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb
- MD5 166d06322c76800f65f4e58ffe2e86ab
- SHA1 f31dd5c4b3120f1d40f545d88464e231ab4109d2
- SHA512 5effdc3293e2bba4008c7aebf1e5b96f145d2afcfcc7c840d34a3428c2ca17037a941571143661cb87aa3f035248e3498fbbb81cc64579bb88e4542b2d702782
- SSDEEP 384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOr9NNV5H/V36aNQP+OKGDw9ce9cWyqel:uZ4FLz8ae+rOn8ae+rO2aNQP+UDQvTJe
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Cosmu family
- Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/memory/2456-1117-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu - Renames multiple (5277) 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\MSIPC\el\msipc.dll.mui.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\msoia.exe.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\OWSSUPP.DLL.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\pl\PresentationFramework.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Integral.thmx.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp2-ppd.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\cardview-linkedentity.png.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected] af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Grace-ul-oob.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-pl.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-ul-oob.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Grace-ul-oob.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-ul-phn.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.15\zh-Hans\PresentationUI.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\MSOUC_COL.HXC.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Common Files\System\Ole DB\sqlxmlx.rll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Input.Manipulations.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\ExitGet.dib.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jdk-1.8\legal\jdk\dom.md.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Retail-ul-phn.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\TAG.XSL.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-100.png.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Templates\1033\TimeCard.xltx.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Common Files\microsoft shared\ink\es-ES\ShapeCollector.exe.mui.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\WindowsBase.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Frosted Glass.eftx.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EURO\MSOEURO.DLL.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\7-Zip\Lang\ja.txt.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationClientSideProviders.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\ReachFramework.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\jfxswt.jar.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-runtime-l1-1-0.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ul-phn.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_MAK_AE-pl.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\PresentationUI.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ppd.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Grace-ppd.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Trial-pl.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\msvcp120.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\PersonaSpy\office.core.operational.js.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected] af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\rsod\dcf.x-none.msi.16.x-none.boot.tree.dat.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\System.Security.Cryptography.Encoding.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Controls.Ribbon.resources.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E2-0409-1000-0000000FF1CE.xml.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ul-oob.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_OEM_Perp-ppd.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\TipTsf.dll.mui.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Pipes.dll.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jdk-1.8\bin\jconsole.exe.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_OEM_Perp-ul-oob.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_COL.HXC.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD_COL.HXT.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\NPSPWRAP.DLL.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\vfs\Fonts\private\LEELAWAD.TTF.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Google\Chrome\Application\133.0.6943.60\elevated_tracing_service.exe.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Retail-ul-phn.xrm-ms.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\1033\offsymxb.ttf.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Microsoft Office\root\Office16\Library\SOLVER\SOLVER32.DLL.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe File created C:\Program Files\Java\jdk-1.8\bin\jabswitch.exe.tmp af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.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 af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe"C:\Users\Admin\AppData\Local\Temp\af1fda8c896f7176155edbaeacf7ea63898ea4cc44aa51ae5d13d856eaf2d2eb.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2456
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\$Recycle.Bin\S-1-5-21-3518521428-3897247806-4080064211-1000\desktop.ini.tmp
- Size 34KB
- SHA256 6cf6b3fe575d0f380efbf09505a849fa3753059cf36e9b29d3e83e4e1a7e8b90
- MD5 6b3db92944bd88ea5713bcf133322845
- SHA1 252386473b4c6f06fedae86881b0ad10e118928f
- SHA512 4eaaa3be5d3132d7d0066d9b7e0bf72e889eb21ff0c41b5319721aafc936d70faa3b3567524519c09b6d5b8d3b2bf9b9ec9cf3adc66f19cf97f3cfd3ba266c25
- SSDEEP 384:hAg+5OCZ4W6/KWLsqmFae+rOAqmFae+rOr9NNV5H/V36aNQP+OKGDw9ce9cWyqed:uZ4FLz8ae+rOn8ae+rO2aNQP+UDQvTJa
- MD5 SHA1 SHA512 SSDEEP
- Path C:\ef24ccacc0fb7a1128713900cef14716\2010_x64.log.html.tmp
- Size 120KB
- SHA256 de596211de763bfabcc4e5f9eec236f68dc0386d26c5a8274b4fe2f56e4b6ef9
- MD5 4941e7c57d4f734f19d87e7b90e2bc4b
- SHA1 c7337d26a3131f776263a3dac561a9806fdd5da2
- SHA512 a2413269a5a75d8228b8a42f6d5207dd52f7ddb7280b3b39fa17a3158d504d733ae8e6fe2ac7767d6e0efbbdff39f9b5a498e82da91fc3d48111bb4a1187e38a
- SSDEEP 768:uZ4FLz8ae+rOn8ae+rO2aNQP+UDQvTJzVyw7ofjeGNEJRYNYc+Rsz:uGIIJQP+UDQvfobeGNEJRYNYc+6
- MD5 SHA1 SHA512 SSDEEP