Analysis
- max time kernel
120s - max time network
103s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system - submitted
20/10/2024, 14:28
Behavioral task
behavioral1
Sample
75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe
Resource
win7-20240903-en
windows7-x64
8 signatures
120 seconds
Behavioral task
behavioral2
Sample
75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
7 signatures
120 seconds
General
- Target 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe
- Size 196KB
- Sample241020-rs1cvsvdkr
- SHA256 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444
- MD5 76612ed62062b2c9653333d367aa39d0
- SHA1 a7a86d6fc2bd2c7ff5c35634c6890e09a45a5723
- SHA512 963bf6c772202b65e6094c2ae8511572dab5bbdd11c273207aed6b51ea85d5d9ff332d644bcaab4b6a2f65467559a04fb345c6e875df09e57c103e3c03c11c0b
- SSDEEP 3072:htE5KIKED9u3NTcGCLOwstyhZFChcssc56FUrgxvbSD4UQrO2m:fEj9KN4ShcHUam
- MD5 SHA1 SHA512 SSDEEP
Score
9/10
Malware Config
Signatures
- Renames multiple (4640) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
- Executes dropped EXE 2 IoCs
pid Process 4372 Zombie.exe 2800 _choco.exe - Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\Zombie.exe 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe File created C:\Windows\SysWOW64\Zombie.exe 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe -
resource yara_rule behavioral2/memory/2036-0-0x0000000000400000-0x000000000040A000-memory.dmp upx behavioral2/files/0x000c000000023ba0-6.dat upx behavioral2/files/0x0007000000023c93-11.dat upx behavioral2/memory/2036-26-0x0000000000400000-0x000000000040A000-memory.dmp upx - Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Queryable.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\vcruntime140_1.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Windows.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_CopyNoDrop32x32.gif.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial2-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_PrepidBypass-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Primitives.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.Linq.dll.tmp Zombie.exe File created C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\et.pak.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\security\cacerts.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.contrast-white_scale-100.png.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcDemoR_BypassTrial365-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ru-ru.dll.tmp Zombie.exe File created C:\Program Files\Common Files\System\ado\msadrh15.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Data.Common.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\ReachFramework.resources.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\bin\rmid.exe.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\accessibility.properties.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Grace-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Grace-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\InkObj.dll.mui.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Numerics.Vectors.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\UIAutomationClient.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\WindowsFormsIntegration.resources.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\PresentationCore.resources.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Smokey Glass.eftx.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.ReaderWriter.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Accessibility.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail2-pl.xrm-ms.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-debug-l1-1-0.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial Black-Arial.xml.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-ul-oob.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_it.properties.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_MoveDrop32x32.gif.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\GB.XSL.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVOrchestration.dll.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\de-DE\TipTsf.dll.mui.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tabskb.dll.mui.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Primitives.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.InteropServices.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-ul-phn.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-100.png.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\MSIPC\el\msipc.dll.mui.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\symbase.xml.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Xml.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Handles.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\lib\deploy\splash_11-lic.gif.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_KMS_Client_AE-ppd.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\Sybase.xsl.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-sysinfo-l1-1-0.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_MAKC2R-pl.xrm-ms.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\MEDIA\CASHREG.WAV.tmp Zombie.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ms-my.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework.Aero.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\ADDINS\otkloadr_x64.dll.tmp Zombie.exe File created C:\Program Files\Microsoft Office\root\Office16\INTLDATE.DLL.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Sockets.dll.tmp Zombie.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.AppContext.dll.tmp Zombie.exe File created C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-string-l1-1-0.dll.tmp Zombie.exe - System Location Discovery: System Language Discovery 1 TTPs 2 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 Zombie.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe - Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 2036 wrote to memory of 4372 2036 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe 84 PID 2036 wrote to memory of 4372 2036 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe 84 PID 2036 wrote to memory of 4372 2036 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe 84 PID 2036 wrote to memory of 2800 2036 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe 85 PID 2036 wrote to memory of 2800 2036 75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe 85
Processes
-
C:\Users\Admin\AppData\Local\Temp\75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe"C:\Users\Admin\AppData\Local\Temp\75470989bd6b1cd82edd4ad60d78b954499ed099274cf6f26a453dfe74d20444N.exe"1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036 -
C:\Windows\SysWOW64\Zombie.exe"C:\Windows\system32\Zombie.exe"2⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4372
-
-
C:\Users\Admin\AppData\Local\Temp\_choco.exe"_choco.exe"2⤵
- Executes dropped EXE
PID:2800
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\$Recycle.Bin\S-1-5-21-2437139445-1151884604-3026847218-1000\desktop.ini.tmp
- Size 56KB
- SHA256 bb4b69cd2b2c30c8c702289bcb4726fe31ea2472cbca70e4dc21f7d80bcfcc04
- MD5 807c23aae545536ee366e5990bcda848
- SHA1 8e3c8c6e851b5cc2d46370affc46d4429213a20b
- SHA512 0f2f88bfbd294c79a39075f1337dba7de9aa4dd9c95fd339c7962a5ff2216de5ce299325deddc8abfa5374e62de20f55eb97ef59740dfee891eba9b3f71f6f71
- SSDEEP 768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATNydWK9WKTZQZ1TQbzjrY/+TQbzjrY5:CTW7JJZENTNyoKIKQSBTNT5
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\_choco.exe
- Size 140KB
- SHA256 29f612bb3cc7a9712baaae62b49b0c03a661280b8bf0177b2713a13c016d0b32
- MD5 c258b25b6ec8f09230e272033ad4b2fa
- SHA1 c4e862d33fe8915818d9e58d428c7324a436f97f
- SHA512 21f7da9bf267f4cb897d9475f8a6f32e6f7e777c3f761b739da4038d44c2786030bc46ab54a8832205d1fb1fe944d7005eb34ddad3700c4c79bcdb932191b90c
- SSDEEP 3072:ND9u3NTcGCLOwstyhZFChcssc56FUrgxvbSD4UQrO2D:Z9KN4ShcHUaD
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Windows\SysWOW64\Zombie.exe
- Size 56KB
- SHA256 cf73af97b8b89bbca5aa3599bda51d44f00100bec7047be1a8f59a312450ec69
- MD5 b82301b770ccc472e2cca91b0973fb45
- SHA1 4e54bc8e6d5e1dbf3e269f0d46b7e8bdf9867600
- SHA512 1e3e866bd79c7e51094acf8e43834e677d5b736ff489597a8dfd2e81198ec6d6b1fac5e4c210b1bc4e2b1b928c246a5ce86a092779ea3b9e4e4a8833a58cdf7c
- SSDEEP 768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATNydWK9WKTZQZ1TQbzjrY/+TQbzjrYZ:CTW7JJZENTNyoKIKQSBTNTZ
- MD5 SHA1 SHA512 SSDEEP