Analysis
- max time kernel
146s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260710-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
31/07/2026, 02:49
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
install_mal003.msi
Resource
win10v2004-20260513-en
windows10-2004-x64
41 signatures
150 seconds
Behavioral task
behavioral2
Sample
install_mal003.msi
Resource
win11ltsc2024-20260710-en
windows11-ltsc_2024-x64
24 signatures
150 seconds
General
- Target install_mal003.msi
- Size 5.8MB
- Sample260731-dbg83ascrd
- SHA256 46ff9f7bae7daa4043d463a91d4bde3d0a8a05a7c3c3135884dda390df0c59db
- MD5 1442e1eb536aa33cd300b03dc19407b7
- SHA1 bc16bbe0585ba5b30ea2350052f8733944718830
- SHA512 a631fa7c00007a4596998d920d0345a75d73ce8db4da60bde56929520b36079e10cf6e397ba7ea4b8dd131716e89cd70e8e405d83a54a586c66ea106960c21af
- SSDEEP 98304:3AnifxFCNdq4yN9vE1bVdEpUGoPHN9HGkZCCwCJtXG4X32KvqiHRG:3yOPsdq1N9vE1bPEiGut9HzgcPGY32KI
- TLSH T13B563391BE8A2B39D027D7B44696663E702D7FD14E634C0ABAFA3F1D5E323152879340
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 2440 powershell.exe - Executes dropped EXE 1 IoCs
pid Process 3484 YksiNS.exe - Loads dropped DLL 2 IoCs
pid Process 4720 MsiExec.exe 3484 YksiNS.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Tencent SecurityHealth = "\"C:\\Users\\Public\\ypivm8\\YksiNS.exe\"" YksiNS.exe - Badlisted process makes network request 4 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 12 4720 MsiExec.exe 13 4720 MsiExec.exe 16 4720 MsiExec.exe 17 4720 MsiExec.exe - Enumerates connected drives 3 TTPs 46 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\D: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\D: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\N: msiexec.exe - Indicator Removal: Clear Persistence 1 TTPs 5 IoCs
Clear artifacts associated with previously established persistence like scheduletasks on a host.
pid Process 3696 cmd.exe 1832 cmd.exe 3832 cmd.exe 2192 cmd.exe 6068 cmd.exe - Drops file in System32 directory 7 IoCs
description ioc Process File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\D077F3BA01F0F2293C650040B1B80D25_46BE3773AFCF70DA60E4725C8326A576 MsiExec.exe File created C:\Windows\System32\CodeIntegrity\SiPolicy.p7b YksiNS.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B MsiExec.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\0DA515F703BB9B49479E8697ADB0B955_4136D3715888E22D65EBE484B233D81B MsiExec.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240 MsiExec.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B039FEA45CB4CC4BBACFC013C7C55604_FA4759C1FDA1D5B56F6A969553761240 MsiExec.exe File opened for modification C:\Windows\system32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\D077F3BA01F0F2293C650040B1B80D25_46BE3773AFCF70DA60E4725C8326A576 MsiExec.exe - Drops file in Windows directory 13 IoCs
description ioc Process File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File created C:\Windows\SystemTemp\~DFCF2534CC3591D990.TMP msiexec.exe File created C:\Windows\Installer\SourceHash{4CA0D086-AA26-797D-3C5F-028810CDD1E6} msiexec.exe File opened for modification C:\Windows\Installer\MSI118A.tmp msiexec.exe File created C:\Windows\SystemTemp\~DF51A10515FDA16A1E.TMP msiexec.exe File created C:\Windows\Installer\e590b9f.msi msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File created C:\Windows\SystemTemp\~DFCF26EDA1DA88890A.TMP msiexec.exe File opened for modification C:\Windows\Installer\MSI138F.tmp msiexec.exe File created C:\Windows\Installer\e590ba1.msi msiexec.exe File created C:\Windows\SystemTemp\~DF246B9B4AB4703DE4.TMP msiexec.exe File opened for modification C:\Windows\Installer\e590b9f.msi msiexec.exe File opened for modification C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log msiexec.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
pid Process 4260 msiexec.exe - Executes a command shell one-liner 1 TTPs 5 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
pid Process 3268 cmd.exe 708 cmd.exe 1908 cmd.exe 4404 cmd.exe 460 cmd.exe - Checks SCSI registry key(s) 3 TTPs 5 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters vssvc.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr vssvc.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 000000000400000085dc765dd76e689e0000000000000000000000000000000000000000000000000000000000000000000000000000000000001071020000000000c012000000000000000000000000270101000088380185dc765d0000000000001071020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d0830200000000006025c501000000000000000000000700010000e8410185dc765d000000000000d08302000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9c701000000000000050000000000000000000000070001000098d4e385dc765d00000000000030a9c7010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9cc0100000000000005000000000000000000000007000100009854e685dc765d00000000000030a9cc01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 vssvc.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\SnapshotDataCache = 534e41505041525401000000700000008ec7416a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 vssvc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters vssvc.exe - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing MsiExec.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27 msiexec.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ MsiExec.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" MsiExec.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" MsiExec.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27\52C64B7E msiexec.exe Key created \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\28 msiexec.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" MsiExec.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" MsiExec.exe - Modifies registry class 22 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\PackageCode = "98FF6061FB16E5349B09B4760EA3AEF9" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\Assignment = "1" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\AdvertiseFlags = "388" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\AuthorizedLUAApp = "0" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\680D0AC462AAD797C3F5208801DC1D6E\UuueatYAD msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\Language = "1033" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\EE0DD599FAE22DB2585D0B62A28731E0\680D0AC462AAD797C3F5208801DC1D6E msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\PackageName = "install_mal003.msi" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\Media\1 = ";" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\EE0DD599FAE22DB2585D0B62A28731E0 msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\ProductName = "ENCPP Licensing Dll" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\InstanceType = "0" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\DeploymentFlags = "3" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\Net msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList\Media msiexec.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\Clients = 3a0000000000 msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\680D0AC462AAD797C3F5208801DC1D6E msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\Version = "84017285" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\680D0AC462AAD797C3F5208801DC1D6E\SourceList msiexec.exe - Scheduled Task/Job: Scheduled Task 1 TTPs 5 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1080 schtasks.exe 1256 schtasks.exe 3448 schtasks.exe 2124 schtasks.exe 4844 schtasks.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4664 msiexec.exe 4664 msiexec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 4720 MsiExec.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe 3484 YksiNS.exe - Suspicious behavior: LoadsDriver 6 IoCs
pid Process 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found 816 Process not Found - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 4260 msiexec.exe Token: SeIncreaseQuotaPrivilege 4260 msiexec.exe Token: SeSecurityPrivilege 4664 msiexec.exe Token: SeCreateTokenPrivilege 4260 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 4260 msiexec.exe Token: SeLockMemoryPrivilege 4260 msiexec.exe Token: SeIncreaseQuotaPrivilege 4260 msiexec.exe Token: SeMachineAccountPrivilege 4260 msiexec.exe Token: SeTcbPrivilege 4260 msiexec.exe Token: SeSecurityPrivilege 4260 msiexec.exe Token: SeTakeOwnershipPrivilege 4260 msiexec.exe Token: SeLoadDriverPrivilege 4260 msiexec.exe Token: SeSystemProfilePrivilege 4260 msiexec.exe Token: SeSystemtimePrivilege 4260 msiexec.exe Token: SeProfSingleProcessPrivilege 4260 msiexec.exe Token: SeIncBasePriorityPrivilege 4260 msiexec.exe Token: SeCreatePagefilePrivilege 4260 msiexec.exe Token: SeCreatePermanentPrivilege 4260 msiexec.exe Token: SeBackupPrivilege 4260 msiexec.exe Token: SeRestorePrivilege 4260 msiexec.exe Token: SeShutdownPrivilege 4260 msiexec.exe Token: SeDebugPrivilege 4260 msiexec.exe Token: SeAuditPrivilege 4260 msiexec.exe Token: SeSystemEnvironmentPrivilege 4260 msiexec.exe Token: SeChangeNotifyPrivilege 4260 msiexec.exe Token: SeRemoteShutdownPrivilege 4260 msiexec.exe Token: SeUndockPrivilege 4260 msiexec.exe Token: SeSyncAgentPrivilege 4260 msiexec.exe Token: SeEnableDelegationPrivilege 4260 msiexec.exe Token: SeManageVolumePrivilege 4260 msiexec.exe Token: SeImpersonatePrivilege 4260 msiexec.exe Token: SeCreateGlobalPrivilege 4260 msiexec.exe Token: SeBackupPrivilege 4100 vssvc.exe Token: SeRestorePrivilege 4100 vssvc.exe Token: SeAuditPrivilege 4100 vssvc.exe Token: SeBackupPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeBackupPrivilege 1184 srtasks.exe Token: SeRestorePrivilege 1184 srtasks.exe Token: SeSecurityPrivilege 1184 srtasks.exe Token: SeTakeOwnershipPrivilege 1184 srtasks.exe Token: SeBackupPrivilege 1184 srtasks.exe Token: SeRestorePrivilege 1184 srtasks.exe Token: SeSecurityPrivilege 1184 srtasks.exe Token: SeTakeOwnershipPrivilege 1184 srtasks.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe Token: SeTakeOwnershipPrivilege 4664 msiexec.exe Token: SeRestorePrivilege 4664 msiexec.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 4260 msiexec.exe 4260 msiexec.exe - Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 4260 msiexec.exe 4664 msiexec.exe 4720 MsiExec.exe - Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 4664 wrote to memory of 1184 4664 msiexec.exe 94 PID 4664 wrote to memory of 4720 4664 msiexec.exe 96 PID 3484 wrote to memory of 2440 3484 YksiNS.exe 100 PID 3484 wrote to memory of 3696 3484 YksiNS.exe 102 PID 3696 wrote to memory of 1080 3696 cmd.exe 104 PID 3696 wrote to memory of 920 3696 cmd.exe 105 PID 3696 wrote to memory of 2484 3696 cmd.exe 107 PID 3484 wrote to memory of 1832 3484 YksiNS.exe 109 PID 1832 wrote to memory of 1256 1832 cmd.exe 112 PID 1832 wrote to memory of 5588 1832 cmd.exe 114 PID 1832 wrote to memory of 4396 1832 cmd.exe 116 PID 3484 wrote to memory of 3832 3484 YksiNS.exe 118 PID 3832 wrote to memory of 3448 3832 cmd.exe 120 PID 3832 wrote to memory of 3024 3832 cmd.exe 121 PID 3832 wrote to memory of 5728 3832 cmd.exe 123 PID 3484 wrote to memory of 2192 3484 YksiNS.exe 125 PID 2192 wrote to memory of 2124 2192 cmd.exe 127 PID 2192 wrote to memory of 368 2192 cmd.exe 128 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\install_mal003.msi1⤵
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:4260
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C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4664 -
C:\Windows\system32\srtasks.exeC:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:22⤵
- Suspicious use of AdjustPrivilegeToken
PID:1184
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C:\Windows\System32\MsiExec.exeC:\Windows\System32\MsiExec.exe -Embedding EAD013B084031F86F0E3B6691DEE36C8 E Global\MSI00002⤵
- Loads dropped DLL
- Badlisted process makes network request
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:4720
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:4100
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C:\Users\Public\ypivm8\YksiNS.exe"C:\Users\Public\ypivm8\YksiNS.exe"1⤵
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3484 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath 'C:\ProgramData','C:\Users','C:\Program Files (x86)','C:\' -Force2⤵
- Command and Scripting Interpreter: PowerShell
PID:2440
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\ypivm8\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:3696 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Public\ypivm8\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1080
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:920
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2484
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:1832 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\ProgramData\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:1256
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:5588
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:4396
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:3448
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:3024
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:5728
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
- Suspicious use of WriteProcessMemory
PID:2192 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Program Files (x86)\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:2124
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:368
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:1348
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" cmd.exe /c SCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"%USERPROFILE%\Documents\" /t REG_DWORD /d 0 /f" & SCHTASKS /Run /TN "Task1" & SCHTASKS /Delete /TN "Task1" /F2⤵
- Indicator Removal: Clear Persistence
PID:6068 -
C:\Windows\system32\schtasks.exeSCHTASKS /Create /F /TN "Task1" /SC ONCE /ST 00:00 /RL HIGHEST /RU "SYSTEM" /TR "cmd.exe /c reg add \"HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\" /v \"C:\Users\Admin\Documents\" /t REG_DWORD /d 0 /f"3⤵
- Scheduled Task/Job: Scheduled Task
PID:4844
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C:\Windows\system32\schtasks.exeSCHTASKS /Run /TN "Task1"3⤵PID:2552
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C:\Windows\system32\schtasks.exeSCHTASKS /Delete /TN "Task1" /F3⤵PID:2080
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\ypivm8" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:708 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Public\ypivm8" /t REG_DWORD /d 0 /f2⤵PID:2700
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C:\Windows\system32\cmd.execmd.exe1⤵PID:3152
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:1908 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\ProgramData" /t REG_DWORD /d 0 /f2⤵PID:1660
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:4404 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users" /t REG_DWORD /d 0 /f2⤵PID:3636
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:460 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Program Files (x86)" /t REG_DWORD /d 0 /f2⤵PID:2076
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C:\Windows\system32\cmd.exe"cmd.exe" /c reg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f1⤵
- Executes a command shell one-liner
PID:3268 -
C:\Windows\System32\reg.exereg add "HKLM\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths" /v "C:\Users\Admin\Documents" /t REG_DWORD /d 0 /f2⤵PID:3192
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Installer Packages
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
1Installer Packages
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
Indicator Removal
1Clear Persistence
1Modify Registry
1System Binary Proxy Execution
1Msiexec
1Replay Monitor
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Downloads
- Path C:\Config.Msi\e590ba0.rbs
- Size 7KB
- SHA256 ce8867e27e4b8d36b9676210d93d26449852f9d8035c2b58331d454f499ee02b
- MD5 c4dc425939f82b49ff72a648cf003465
- SHA1 360383001c88dfd2e434b3ef79b5d14a9c2e848b
- SHA512 59629a0f2510fbb1e7c2331b8015ab1681fc1511236cf6de781d4262e32041b205d4e7781211c23b2a462bdc0776f54b2b85bbd0b9cee60cc4c9cd712181bb35
- SSDEEP 96:tnhgu0CffSUUwnrD1CsThqFUwnrD1C6je1Hp/ThqlHm25yeWl0lnCKpljeHbAjBz:tnaCCz4rDIIz4rDIxjal4KpI4
- TLSH T107F1100666144BF3F8E66B35CB07176637E2D2E5929433DB1CCD80241FC77992E6868E
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\ypivm8\UxEnhance64.dll
- Size 3.1MB
- SHA256 80f2859321e626c703e934328779bb8ccd969d424b83adf6ec8adef35d0f15ae
- MD5 ca8705381e92ecb0301e3a8aa73eae2e
- SHA1 b39de05382800a163c1a95e936fb3c8e0c7d8d59
- SHA512 4c4dadbc289f76ad930a306a41b05d48d1e746ef87c57b40167061d9daaf0a3879521c8eeed9bb29f4429ce6205c0652bb81dd3a4a69e9057466aa4f7badc5c6
- SSDEEP 49152:P9KpI8cBa0kj6BK0x3TiMQclkGo2PXk6rkwuuWG/+WizBedfb77N3SnKrKB+q:P9m29xx3Tiqt06ox6+z2rNNrKoq
- TLSH T153E523E5B6D739F6D023CBF4DA62A1AD70393F505F635C5F3B8929014E62228973A390
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\ypivm8\YksiNS.exe
- Size 135KB
- SHA256 676a2a7b94ca2f8ec76352ee656e4d075bb342bd7ad6efbc7c19c060001eace7
- MD5 9ec587911e501b73b7cf09f05d0ae17d
- SHA1 5b62403cc9a668c6e5c70ace177fd54fcc4c5936
- SHA512 d05468a472373815c46ccb46ec743408365d24982d10d8a23ee0036c28cf3dacd05d74304ef2d4b7118f91ff3f631f676b2e86ddee92a02cf988b0d3c6247847
- SSDEEP 3072:MmhXb5pgtiaRENEErO9Uj4OqhhUvB4BNgQaJ:MmjgtiayGErsUKh3To
- TLSH T1D0D38C2776A474F9E1778635C8511A1AE772B8760770CB9F03A442A62F237D19E3EF20
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\ypivm8\adoresd.dat
- Size 4.8MB
- SHA256 32070fc333ba7c31e6b948fb41d8a7ec1cd769f2c93394946bfcbfe758db3ea7
- MD5 58969654a8f70c6a61921fb7f7076430
- SHA1 e90c0a79a70bf0e629a22f2f09afbed7051e5f23
- SHA512 191f925a534978efce1c61cc9fff20e998af4bf1a3c512c3d888cf24555fad33280e09faa00f0e9eebc2e66766e81afab28445fd5742bda5c28e57a0c78e03b2
- SSDEEP 98304:FuZ630UjjOt6udZuYb7Ad2WAqSFmtNYNF/ltN3fjZgRnXxs:+QDPnORb7AdPEm7Y7ltlVgxs
- TLSH T174363339536D9C62DDC7A0F8A49E4596FF683D60FAE2A006B47C1D213015DFB986FE08
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Public\ypivm8\msadox.tb
- Size 8KB
- SHA256 27727e6ab68ea92b07ab3314e3577fad822429ec0b466dd5d4c90db1d8229c19
- MD5 e4e357cfa0e2330d23c721f612db8e85
- SHA1 231a6cefa2869913d1f4b1ad159a421a6feb1492
- SHA512 c76f4d00cc39a2d0b37bffa5f01b31452ac912970db04be39c8dc0d3a63bd14bfbe828f0df7e47af84f5fe23bf83c984e7936d360cbb3c092c9e38249dce1791
- SSDEEP 192:aqbZajnZ45X1q3JXglD+3vR8cwNhIMCGe2y0PQp:asZqZOXQ3uqvR2Kfzp
- TLSH T14B029E05D7A20CC3D2016C71CD9EB2F5AB13A1DADA3926719C67D4C167072DD2CE620D
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\Installer\MSI138F.tmp
- Size 5.8MB
- SHA256 d4f0a7d05fd811fd2c9eeadb14696a445dc7b0735471390333aa464420f8f2b6
- MD5 8524ea3b8aca87d8db13ff2198e720fb
- SHA1 7fd63d851d9dd8982a4ba7d7ada736f24732fe61
- SHA512 5799efb6ce524ffec37ac5f55ccdebbc49a9d17c26eee89085a1c12f48d950026f4de87f887c14369d5d51d50db742fc56b9ca5ba0c2a46252053f4e6118e8f0
- SSDEEP 98304:kAnifxFCNdq4yN9vE1bVdEpUGoPHN9HGlZCCwCJtXG4X32KvqiHRB:kyOPsdq1N9vE1bPEiGut9HqgcPGY32K3
- TLSH T13E5633D1AA8A2A78D077D7F446976A3E701E3BD24E634C0DBAFA2F1D5D332156839301
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\Installer\e590b9f.msi
- Size 5.8MB
- SHA256 46ff9f7bae7daa4043d463a91d4bde3d0a8a05a7c3c3135884dda390df0c59db
- MD5 1442e1eb536aa33cd300b03dc19407b7
- SHA1 bc16bbe0585ba5b30ea2350052f8733944718830
- SHA512 a631fa7c00007a4596998d920d0345a75d73ce8db4da60bde56929520b36079e10cf6e397ba7ea4b8dd131716e89cd70e8e405d83a54a586c66ea106960c21af
- SSDEEP 98304:3AnifxFCNdq4yN9vE1bVdEpUGoPHN9HGkZCCwCJtXG4X32KvqiHRG:3yOPsdq1N9vE1bPEiGut9HzgcPGY32KI
- TLSH T13B563391BE8A2B39D027D7B44696663E702D7FD14E634C0ABAFA3F1D5E323152879340
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
- Size 26.1MB
- SHA256 f2ddc7d807e663f2b6a680541055a720113bae6c759d4614941b955154caa2fe
- MD5 518998395f7380389188c9b6a63d2047
- SHA1 49d391207cb624b19cbe610e976095b645c2c869
- SHA512 362d7ac7a5800499f92b5e194c2ea1df6773e82f0f04d103d1c38c7ed0eb3393d50add1c9fdf33baef0a9fc771cf9c9a69abb2452587fe1ad8f7acc47c6b68f0
- SSDEEP 24576:wFo3DMP4doO/vvTL/yQAQiFAvLeqrLXzU9WCtNuYm1ua5nxg8IhWwpKx0uO:JHc
- TLSH T1A457A52476F92200E7B79E3CA8F06A238D397D579C15DE8D45421B4E0922F71E872F6B
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path \??\Volume{5d76dc85-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{a5bcc866-9956-45bb-a0aa-7aafc7c546f2}_OnDiskSnapshotProp
- Size 6KB
- SHA256 2bf2e3e01fcbbfea072111ef538abfc6e8ce6ae4d44f261adcd9f71a53edc33d
- MD5 46dce352a9110e96009033978a3c1189
- SHA1 854f8e19f5d3ffda7c7f1b5cc89cefb739c8a81b
- SHA512 5b5a81f6cd260741a2221eab786207650ed811a2d942c526d5a03e99d76fd22b3d1331a9b1f06d048f558ac5412fe3684772b4c94fb4b3d57175daf34a393fec
- SSDEEP 96:FBX0rvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpu:jqb++uVm
- TLSH T16ED187085AF54711E2B3AB3128F18557A877B911EF33CB8E0198238E6670A10F975F6F
- MD5 SHA1 SHA512 SSDEEP TLSH