Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    20/07/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260720-w2ff9sbv8q
  • SHA256 81375f8b1328f88e9e0809a87d1b75a9e6d75aed9045139679c3dd3929509d7a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 3 IoCs

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

  • 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.

  • 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 42 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 12 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • 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.

  • Modifies data under HKEY_USERS 14 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 12 IoCs
  • Suspicious use of SendNotifyMessage 10 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 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\ScreenConnect.ClientSetup.msi
    1⤵
    • 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:4748
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 73DF359A6A49596BBFC59F1DD093CF1A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5940
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240729562 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2600
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4424.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240731203 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5600
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4A6F.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240733109 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5868
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:556
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 31859F26FEF904D7ECC9F3401EC8B26B
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2172
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 18746B3ABE762A3549A379FA5E487D6C E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:4288
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3884
    • C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-yt27xv-relay.screenconnect.com&p=443&s=0a0727f1-3911-463a-815f-86d2b2d8ab3b&k=BgIAAACkAABSU0ExAAgAAAEAAQBFlcIsui8pbUD534%2bvbkg2iKCQmSSueGIoVF%2bbbXjTJj7IrHQaNXudvB2SvIFMfuZk3GwaPYymBlOVoFkOAQymrn5LvLqrYQlSJ59iF1ei9Sfs%2fCVEp1cgCTCuu0LUU%2fxHRDku8pr6K0wfcuL91kpC%2fTZ61rwozoIZ3K%2f18yEh7c91uQ7glplqd9Bhpul3LsHOG86W%2fE2%2b3mHpsHu9ZFMO4qvzWmBRbWRFadu%2bOlSyDUIV5vCVz5gC4Z4btdezry7HaR6ypT9EzSZdG0yPjM4d3mZQq%2fO8ODMebsGyXoZjEqOxIp7DY%2fcKKEuBbHgwoi2gu5DpAWPaeXG%2fEU9MNpWk"
      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:5860
      • C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe" "RunRole" "d84a6fe7-8fa0-4867-95df-8c06ce6e45f9" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4308
      • C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe" "RunRole" "7b457c76-6750-43fd-97ea-35bc20771442" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5388

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e599f45.rbs

          • Path C:\Config.Msi\e599f45.rbs
          • Size 214KB
          • SHA256 b9603e8f30b77f02debfee8fc7bb803584e5763e6a23896f2554e8da47ca85da
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe
          • Size 676KB
          • SHA256 f49ca44ae19ec33053d76aeca7136193095b6583888a0be063b8120c3c9226c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a7b037e78b9e86f4)\system.config
          • Size 968B
          • SHA256 132c171777814e882d0a93b37c6b6fe3cb17e6fa58f19cd3d974ba41a59558d3
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 4KB
          • SHA256 0300e9ddb527990e8b59d06e9ccf3ec2bd92d3bbd0ef4fba69d6336e4195e82d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 c2a9a3e1f4422875cb23149bc6e469fe1cfe3e136d0d77321b9649fd44f8785f
          • MD5 SHA1 SHA512 TLSH

          MSI3C63.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3C63.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4424.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4424.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIA59E.tmp

          • Path C:\Windows\Installer\MSIA59E.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e599f44.msi

          • Path C:\Windows\Installer\e599f44.msi
          • Size 9.8MB
          • SHA256 81375f8b1328f88e9e0809a87d1b75a9e6d75aed9045139679c3dd3929509d7a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          4ivstple.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a7b037e78b9e86f4)\4ivstple.newcfg
          • Size 883B
          • SHA256 e6ec68b98ce6473aff114d6f8ef08ce94ca9aad1fde0153609b20c0a7226a3dd
          • MD5 SHA1 SHA512 TLSH

          n4f1hod4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a7b037e78b9e86f4)\n4f1hod4.newcfg
          • Size 883B
          • SHA256 89092d78fa86e22cf1200f2bd438a0a5d55dc4076972cd74250b4d28b76e55f3
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a7b037e78b9e86f4)\user.config
          • Size 520B
          • SHA256 dddfb0d7e51690d069fec0d29683a63a1ff2e9d917df61a95d262299d551ce01
          • MD5 SHA1 SHA512 TLSH

          ypvau1me.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a7b037e78b9e86f4)\ypvau1me.newcfg
          • Size 683B
          • SHA256 9ce9b17d8ab8b0adce90f4fe26486fcac33cba21e8104965ddf0d193cd8859ab
          • MD5 SHA1 SHA512 TLSH

          memory/2600-21-0x0000000005C10000-0x0000000005C3E000-memory.dmp

          memory/2600-33-0x0000000005F90000-0x0000000006140000-memory.dmp

          memory/2600-29-0x0000000005D40000-0x0000000005DD4000-memory.dmp

          memory/2600-34-0x0000000006700000-0x0000000006CBA000-memory.dmp

          memory/2600-25-0x0000000005C50000-0x0000000005C5C000-memory.dmp

          memory/4308-216-0x000000001C330000-0x000000001C4B8000-memory.dmp

          memory/4308-215-0x0000000002510000-0x000000000252A000-memory.dmp

          memory/4308-214-0x000000001B3D0000-0x000000001B580000-memory.dmp

          memory/4308-213-0x000000001B180000-0x000000001B214000-memory.dmp

          memory/4308-211-0x00000000000F0000-0x000000000019E000-memory.dmp

          memory/4308-212-0x000000001AD80000-0x000000001ADEC000-memory.dmp

          memory/5600-64-0x0000000005590000-0x00000000055B8000-memory.dmp

          memory/5860-190-0x00000000046A0000-0x00000000046E1000-memory.dmp

          memory/5860-151-0x0000000004500000-0x0000000004594000-memory.dmp

          memory/5860-155-0x0000000004750000-0x0000000004900000-memory.dmp

          memory/5860-192-0x0000000004C70000-0x0000000004D46000-memory.dmp

          memory/5860-168-0x00000000046F0000-0x0000000004740000-memory.dmp

          memory/5860-188-0x0000000004A80000-0x0000000004B12000-memory.dmp

          memory/5860-187-0x0000000004970000-0x00000000049DC000-memory.dmp

          memory/5860-145-0x00000000043A0000-0x00000000043BA000-memory.dmp