Overview

overview

8

Static

static

5

ZA_Access_...nt.msi

windows10-2004-x64

7

ZA_Access_...nt.msi

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    60s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    02/07/2026, 11:50

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General

  • Target
    ZA_Access_My_Department.msi
  • Size 29.5MB
  • Sample260702-nz117ahs91
  • SHA256 0f8bdace0b997d4360731fd8bb9fde8d201fcd9d090a8c5be31617e881bd4ec7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarediscoverypersistenceprivilege_escalationransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 2 IoCs
  • Enumerates connected drives 3 TTPs 48 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 11 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
    persistenceprivilege_escalation
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 45 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ZA_Access_My_Department.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:6100
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5800
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3448
    • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZADeployer.exe
      "C:\Program Files (x86)\ZohoMeeting\UnAttended\ZADeployer.exe" install
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:5644
      • C:\Program Files (x86)\ZohoMeeting\UnAttended\7z.exe
        "C:\Program Files (x86)\ZohoMeeting\UnAttended\\\7z.exe" x "C:\Program Files (x86)\ZohoMeeting\UnAttended\\\ZohoMeeting.7z" -o"C:\Program Files (x86)\ZohoMeeting\UnAttended\\" -y
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        PID:2364
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious use of AdjustPrivilegeToken
    PID:4068
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:4724
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:5744
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:5660
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:4384
  • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURSService.exe
    "C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURSService.exe" run -SessionType URS -productID 1
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4628
    • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe
      -productID 1 -URS_REQUEST -wsn assist.zoho.com -check_urs_preferences -urs_pref_timeout 90
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5332
    • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe
      "C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe" -productID 1 -URS_REQUEST -wsn assist.zoho.com -urs_pref_timeout 90
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:4132
  • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURSService.exe
    "C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURSService.exe" run -SessionType URS -productID 1
    1⤵
      PID:612
      • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe
        -productID 1 -URS_REQUEST -wsn assist.zoho.com -check_urs_preferences -urs_pref_timeout 90
        2⤵
          PID:1632
        • C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe
          "C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoURS.exe" -productID 1 -URS_REQUEST -wsn assist.zoho.com -urs_pref_timeout 90
          2⤵
            PID:2608

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              7z.dll
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\7z.dll
              • Size 1.1MB
              • SHA256 25a52dd0a38f58001779b12e84c2937aa52a922a4db9c43fa89214f11a3f4766
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              7z.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\7z.exe
              • Size 265KB
              • SHA256 54353ea62390f3151fc9dd9cadc86694e17d7d75a7ee6e39ca6285fa4bfb7336
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              AssistLogo_white_border_32.ico
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\AssistLogo_white_border_32.ico
              • Size 14KB
              • SHA256 dd72cc36c3e664913059cc64a852fe673a8b6eb264632fefae20649a27e999d4
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZADeployer.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZADeployer.exe
              • Size 6.5MB
              • SHA256 b0c09192bf5925717b7f04a3aeebe22f79389aef7eddb7ed52338d12fb14f9a3
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZohoMeeting.7z
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting.7z
              • Size 25.3MB
              • SHA256 4f280714af8dcf5ee85933052a7827ae1e4e7fc840e546d9e3dae45f36b1aeec
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ClientSocket.dll
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ClientSocket.dll
              • Size 3.2MB
              • SHA256 d285cbb665349d2a6af7f0c24d2d85f72ab5035a69959d6d9eb31da898343d05
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              AgentApplicationResources.properties
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\Resource\Language\AgentApplicationResources.properties
              • Size 15KB
              • SHA256 69f4db49ffb502944417b233366031fd1485ca8dcdafcba94730fd1019ea7bc1
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              Settings.conf
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\Settings.conf
              • Size 60B
              • SHA256 fdd7b9237db53968ea67662b40be859718b4249593346bde3acbbe74f85b228a
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              ToolsIQ.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ToolsIQ.exe
              • Size 465KB
              • SHA256 7082baed8924a67f8d5e6e2be7605384793d2bca691168c21b1d9b675d298fb0
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              URSCredentialProvider64.dll
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\URSCredentialProvider64.dll
              • Size 548KB
              • SHA256 e7be2116ad1fdf0948aae10a96c4c2a125aea8d2a9ebebca47f5f18a0efac054
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZAService.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZAService.exe
              • Size 7.1MB
              • SHA256 e170d2480d2b914f1a071d26eef421833122faef24976d7d3df997bbd23a4fb6
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZA_Upgrader.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZA_Upgrader.exe
              • Size 6.2MB
              • SHA256 65840edea17ddc88998ff6ecb8566c50bfabc125a94a7efdc5d1a80af3f018b9
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZohoTray.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\ZohoTray.exe
              • Size 6.5MB
              • SHA256 1c26894a4736ddcd96c8b0138471f0f19950d4cf1f99e4008d197548e17aec47
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              agent.exe
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\ZohoMeeting\agent.exe
              • Size 14.5MB
              • SHA256 ad3b378b89b0aa5795f31f1f7e71086bdfcbba3fc930e6248bc340d5eb9dffd1
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              license.rtf
              • Path C:\Program Files (x86)\ZohoMeeting\UnAttended\license.rtf
              • Size 51KB
              • SHA256 6e29c59f8e107b61d26eca465ea8eaa421998af223496253bacd0c761bb99222
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              LogFileTray.log
              • Path C:\ProgramData\ZohoMeeting\log\LogFileTray.log
              • Size 14KB
              • SHA256 56b7fc775df025d9d55d521afedb85916e12f2e1161306fa7559ddca6103f853
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              ZohoURSService.log
              • Path C:\ProgramData\ZohoMeeting\log\ZohoURSService.log
              • Size 22KB
              • SHA256 ddcf9c2b51e67aaa27aa187519999259e7279bf6d870d5dfa33c3323812f9e2f
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              prep_Activatable Class_Hermes_perf.cache
              • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
              • Size 603B
              • SHA256 76051c7134ef5b2b172ae67cc7317ea11daedcc3d11f55c52922e505f501568b
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              LogFileTray.log
              • Path C:\Users\Admin\AppData\Local\ZohoMeeting\log\LogFileTray.log
              • Size 3KB
              • SHA256 5f1cb3335b179efbb10ffc8bdc87800bec934806fcfd8b6bb91cef0c9cb5ae1a
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              metadata-2
              • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
              • Size 26.1MB
              • SHA256 fdd49bcc6594ba02589b7a1338da8e58878c508a6de8c105c7c8059505933d83
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              {2e14e01c-668f-4200-bcf8-223e14a8f8e1}_OnDiskSnapshotProp
              • Path \??\Volume{0c051f61-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{2e14e01c-668f-4200-bcf8-223e14a8f8e1}_OnDiskSnapshotProp
              • Size 6KB
              • SHA256 b5c6e179efb57e17fba4b2570ee67c2e513e8344585d2ad104535fe265c67db1
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              memory/4384-57-0x0000022906970000-0x0000022906990000-memory.dmp
              Download

              memory/4384-75-0x00000229069B0000-0x00000229069D0000-memory.dmp
              Download

              memory/4384-58-0x0000022916BA0000-0x0000022916CA0000-memory.dmp
              Download

              memory/4384-91-0x0000022918410000-0x0000022918430000-memory.dmp
              Download

              memory/4384-45-0x0000022902EA0000-0x0000022902FA0000-memory.dmp
              Download