Analysis
- user interaction
yes - max time kernel
148s - max time network
118s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
01/09/2026, 23:25
Static task
static1
Behavioral task
behavioral1
Sample
StepStrum-1.1.0-win-x64.msi
Resource
win10v2004-20260513-en
windows10-2004-x64
13 signatures
150 seconds
Behavioral task
behavioral2
Sample
StepStrum-1.1.0-win-x64.msi
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
14 signatures
150 seconds
General
- Target StepStrum-1.1.0-win-x64.msi
- Size 6.8MB
- Sample260901-3epvrattgs
- SHA256 43cf313d9a24a7e393f2c170ee36f253732edd50a6d3f905bc8f3425f85a0702
- MD5 a6ee28e98afcf5fddffd2dd3dc7a0c4b
- SHA1 2b063f33890e64f8ce88d74935a117522933353a
- SHA512 440cf89618b9e3cd52f081fa017c95485707829ba1e929f804e4b336f017c73e7ea018c5fcb8836887c38b4767eef2364031d89fbec7f8986f51bad0a4181683
- SSDEEP 196608:nmEIzVAWn539Y1Ngcg3yewrEEcunNk0YnBxIbQ:nmBxnPY3ZiwYEkzBxIQ
- TLSH T1BA76332B7E651704DE08EDBB867F93510638DD89AA248013A853790EEDF26F82FD4CD5
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
Malware Config
Signatures
- Badlisted process makes network request 1 IoCs
Network request originating from process or tool commonly abused by malware.
flow pid Process 2 2924 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) \??\Z: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\J: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\G: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\A: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\D: msiexec.exe File opened (read-only) \??\I: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\S: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\Y: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\K: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\W: msiexec.exe File opened (read-only) \??\X: msiexec.exe File opened (read-only) \??\Q: msiexec.exe File opened (read-only) \??\D: msiexec.exe File opened (read-only) \??\O: msiexec.exe File opened (read-only) \??\P: msiexec.exe File opened (read-only) \??\M: msiexec.exe File opened (read-only) \??\H: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\B: msiexec.exe File opened (read-only) \??\L: msiexec.exe File opened (read-only) \??\N: msiexec.exe File opened (read-only) \??\U: msiexec.exe File opened (read-only) \??\R: msiexec.exe File opened (read-only) \??\T: msiexec.exe File opened (read-only) \??\V: msiexec.exe File opened (read-only) \??\Z: msiexec.exe File opened (read-only) \??\J: msiexec.exe - Drops file in Program Files directory 9 IoCs
description ioc Process File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libhardware_id_generator.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libstdc++-6.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libssl-3-x64.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libwinpthread-1.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\StepStrum.vst3 msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libLicenseSpring.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libcrypto-3-x64.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libcurl.dll msiexec.exe File created C:\Program Files\Common Files\VST3\StepStrum.vst3\Contents\x86_64-win\libgcc_s_seh-1.dll msiexec.exe - Drops file in Windows directory 12 IoCs
description ioc Process File opened for modification C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.log msiexec.exe File opened for modification C:\Windows\Installer\ msiexec.exe File created C:\Windows\Installer\inprogressinstallinfo.ipi msiexec.exe File created C:\Windows\SystemTemp\~DF1406ECEDB33F7CEB.TMP msiexec.exe File created C:\Windows\Installer\SourceHash{70ACE466-C53E-43B5-98ED-B87DF87A4E21} msiexec.exe File created C:\Windows\SystemTemp\~DFE1FDA84689011297.TMP msiexec.exe File opened for modification C:\Windows\Installer\MSI3C6E.tmp msiexec.exe File created C:\Windows\SystemTemp\~DFAB09121A3BD9E9CD.TMP msiexec.exe File created C:\Windows\Installer\e5a36e0.msi msiexec.exe File opened for modification C:\Windows\Installer\e5a36e0.msi msiexec.exe File created C:\Windows\Installer\e5a36e2.msi msiexec.exe File created C:\Windows\SystemTemp\~DF6EEF3C9ABCEF4F20.TMP msiexec.exe - Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
pid Process 2924 msiexec.exe - Checks SCSI registry key(s) 3 TTPs 5 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Device Parameters\Partmgr\PartitionTableCache = 000000000400000081a973cadba16b310000000000000000000000000000000000000000000000000000000000000000000000000000000000001071020000000000c012000000000000000000000000270101000088380181a973ca0000000000001071020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000d0830200000000006025c501000000000000000000000700010000e8410181a973ca000000000000d08302000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9c701000000000000050000000000000000000000070001000098d4e381a973ca00000000000030a9c7010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000030a9cc0100000000000005000000000000000000000007000100009854e681a973ca00000000000030a9cc01000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 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 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 - Modifies data under HKEY_USERS 3 IoCs
description ioc Process Key deleted \REGISTRY\USER\.DEFAULT\SOFTWARE\CLASSES\LOCAL SETTINGS\MUICACHE\27\52C64B7E msiexec.exe Key deleted \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\27 msiexec.exe Key created \REGISTRY\USER\.DEFAULT\Software\Classes\Local Settings\MuiCache\28 msiexec.exe - Modifies registry class 22 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\DeploymentFlags = "3" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\Net msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\Media\1 = ";" msiexec.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\Clients = 3a0000000000 msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\664ECA07E35C5B3489DE8BD78FA7E412 msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\AdvertiseFlags = "388" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\PackageName = "StepStrum-1.1.0-win-x64.msi" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\Media msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412 msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\Assignment = "1" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\InstanceType = "0" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\AuthorizedLUAApp = "0" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\0D40CDE2DFABD124D97557FA04EE7951\664ECA07E35C5B3489DE8BD78FA7E412 msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\Net\1 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Features\664ECA07E35C5B3489DE8BD78FA7E412\MainFeature msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\ProductName = "StepStrum" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\Language = "1033" msiexec.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\Version = "16842752" msiexec.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\UpgradeCodes\0D40CDE2DFABD124D97557FA04EE7951 msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\SourceList\LastUsedSource = "n;1;C:\\Users\\Admin\\AppData\\Local\\Temp\\" msiexec.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Installer\Products\664ECA07E35C5B3489DE8BD78FA7E412\PackageCode = "6FE8B3977A0BEC549B86DC9013E1385D" msiexec.exe - Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2408 msiexec.exe 2408 msiexec.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeShutdownPrivilege 2924 msiexec.exe Token: SeIncreaseQuotaPrivilege 2924 msiexec.exe Token: SeSecurityPrivilege 2408 msiexec.exe Token: SeCreateTokenPrivilege 2924 msiexec.exe Token: SeAssignPrimaryTokenPrivilege 2924 msiexec.exe Token: SeLockMemoryPrivilege 2924 msiexec.exe Token: SeIncreaseQuotaPrivilege 2924 msiexec.exe Token: SeMachineAccountPrivilege 2924 msiexec.exe Token: SeTcbPrivilege 2924 msiexec.exe Token: SeSecurityPrivilege 2924 msiexec.exe Token: SeTakeOwnershipPrivilege 2924 msiexec.exe Token: SeLoadDriverPrivilege 2924 msiexec.exe Token: SeSystemProfilePrivilege 2924 msiexec.exe Token: SeSystemtimePrivilege 2924 msiexec.exe Token: SeProfSingleProcessPrivilege 2924 msiexec.exe Token: SeIncBasePriorityPrivilege 2924 msiexec.exe Token: SeCreatePagefilePrivilege 2924 msiexec.exe Token: SeCreatePermanentPrivilege 2924 msiexec.exe Token: SeBackupPrivilege 2924 msiexec.exe Token: SeRestorePrivilege 2924 msiexec.exe Token: SeShutdownPrivilege 2924 msiexec.exe Token: SeDebugPrivilege 2924 msiexec.exe Token: SeAuditPrivilege 2924 msiexec.exe Token: SeSystemEnvironmentPrivilege 2924 msiexec.exe Token: SeChangeNotifyPrivilege 2924 msiexec.exe Token: SeRemoteShutdownPrivilege 2924 msiexec.exe Token: SeUndockPrivilege 2924 msiexec.exe Token: SeSyncAgentPrivilege 2924 msiexec.exe Token: SeEnableDelegationPrivilege 2924 msiexec.exe Token: SeManageVolumePrivilege 2924 msiexec.exe Token: SeImpersonatePrivilege 2924 msiexec.exe Token: SeCreateGlobalPrivilege 2924 msiexec.exe Token: SeBackupPrivilege 4872 vssvc.exe Token: SeRestorePrivilege 4872 vssvc.exe Token: SeAuditPrivilege 4872 vssvc.exe Token: SeBackupPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe Token: SeTakeOwnershipPrivilege 2408 msiexec.exe Token: SeRestorePrivilege 2408 msiexec.exe - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2924 msiexec.exe 2924 msiexec.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2924 msiexec.exe 2408 msiexec.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 2408 wrote to memory of 5164 2408 msiexec.exe 94 - Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Windows\system32\msiexec.exemsiexec.exe /I C:\Users\Admin\AppData\Local\Temp\StepStrum-1.1.0-win-x64.msi1⤵
- Badlisted process makes network request
- Enumerates connected drives
- Event Triggered Execution: Installer Packages
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
PID:2924
-
C:\Windows\system32\msiexec.exeC:\Windows\system32\msiexec.exe /V1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- 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:2408 -
C:\Windows\system32\srtasks.exeC:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:22⤵PID:5164
-
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Checks SCSI registry key(s)
- Suspicious use of AdjustPrivilegeToken
PID:4872
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵PID:2724
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Config.Msi\e5a36e1.rbs
- Size 8KB
- SHA256 9ee7a82105f09d13b9414a339c7f04fad7ebd0c108360379c15793186efc5905
- MD5 fe7a19e9e76dd9897d2a86625b57b225
- SHA1 cc3c71079d212e6217167aa7464dc90cac594cc2
- SHA512 c5c5ff1fd25349f00529be28ffd65096b887d6bb792eb9782a3b245dc1ca2a007b859434538892b351b047256765aba688bc915903208a2b04b3dbeae0dfe99c
- SSDEEP 192:qIqRN7QPbAQYtCk6mtp2I6p2FzAUlO7W0vWZB238pwxoYlOkoi:qIqRN7QPbAQY3pMpu/0lXh
- TLSH T10E126385BB5082E1F8855B36830B7F6A3BA3D2C85F201B4F01DD87685E8A3546F957CE
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Windows\Installer\e5a36e0.msi
- Size 6.8MB
- SHA256 43cf313d9a24a7e393f2c170ee36f253732edd50a6d3f905bc8f3425f85a0702
- MD5 a6ee28e98afcf5fddffd2dd3dc7a0c4b
- SHA1 2b063f33890e64f8ce88d74935a117522933353a
- SHA512 440cf89618b9e3cd52f081fa017c95485707829ba1e929f804e4b336f017c73e7ea018c5fcb8836887c38b4767eef2364031d89fbec7f8986f51bad0a4181683
- SSDEEP 196608:nmEIzVAWn539Y1Ngcg3yewrEEcunNk0YnBxIbQ:nmBxnPY3ZiwYEkzBxIQ
- TLSH T1BA76332B7E651704DE08EDBB867F93510638DD89AA248013A853790EEDF26F82FD4CD5
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
- Size 26.1MB
- SHA256 93ec9f7d070dbaee3a204232be7b086580cdf513347fcb57c3540df0698e21e7
- MD5 910d23b97c04f9af4565084de8a6b832
- SHA1 3c763f2ff6af56a7da3ae555db000371d90c2e25
- SHA512 75a16f8a48bd912b359123b8d0d883eb5ece15c76b55ac3c699c8f788fdfc7ffc0e891de55275fe0c8cfefd6265a0365981ce4cf2c35378de56e029ce56c16c8
- SSDEEP 24576:TFo3DMPbdoO/vvTL/CwF1yFQPrOfebSmUYjHdIrtDQrKJykVM4RWVsfURed:tHA
- TLSH T12257162436F92110E7F39E3DA8F46A234D397D579C16DE8C05425B8D0922FB1E872F6A
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path \??\Volume{ca73a981-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{25db4b1f-cf28-4bcb-80a0-2a4f732efe4d}_OnDiskSnapshotProp
- Size 6KB
- SHA256 f40134d3151a2ad87f14012034d74e265738c7395e5162c6cf265fc05f38bff2
- MD5 f2d1f6dcc696763b96df1c267a1f20bc
- SHA1 a4a1e3a960acd55f8c6c826ed777502ad8909649
- SHA512 c4775a28656474812131310df430c693b6b154e88ec32cbd79d24f50f66c47ef483b869869a6e002fc2110fdff525213143a0e0804cdd2fb81b78e665de507f0
- SSDEEP 96:FJtkBhLvc6DD84LTHzbOHXOHBlBRQn8Sc9XE56tOSVQpuN:LtkHb++uVmN
- TLSH T11ED188085AF54711E2B3AB3228F18557A877B911EF33CB8E0198638E2631910F935F6B
- MD5 SHA1 SHA512 SSDEEP TLSH