Analysis

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

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    23/07/2026, 00:14

General

  • Target
    ScreenConnect.ClientSetup.exe
  • Size 12.2MB
  • Sample260723-ajvmkseb59
  • SHA256 f231d42a5dccfc512674f6fc6d5445e0f5dbd4d11f19f7e1ef976045e0c71b6e
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 4 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.

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops file in System32 directory 9 IoCs
  • 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.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 13 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 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 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4936
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\aa0708ab58a31f6b\ScreenConnect.ClientSetup.msi" SC_EXE_PATH="C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.exe"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:4756
  • 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:1140
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A350EBEB312A4AFA410CD0B2F402E067 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3820
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIECAD.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240708921 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4984
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF151.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240709984 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3492
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIF6D1.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240711421 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2028
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4132
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 9CB44B4CAF983094D122818E4C957F48
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3564
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F7BF147B2958C05CA132306AF530F391 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:544
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3624
    • C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-zggsoa-relay.screenconnect.com&p=443&s=5d003cb9-a150-4000-a3e0-c03278a9fe33&k=BgIAAACkAABSU0ExAAgAAAEAAQA1wZcXUSEe4vnzar9cJ8KQYYTykuFpXqKTQ4yS72trrIx%2bTVKMH6ivlHc4%2f47NP7fdQdFfk8aQ%2bS7gRe%2bd6a751AEVrJ13ZYg%2bwSg2zVaa3mEmb6%2bgV8hhlFs5WMkalIHVmoINVhcEPBwVvDy6GzPTtEb4wG5PqJtRKoNLK8mecjsWLF04bhUqV7vYNMYHQVmtyNz%2biIVOsJ850ibHGvITLYx1%2fG5Tzkfhd3boW%2bKn9EitkH8hQTRsPPcdpHd%2f4jPvzkA%2f7Q1E8IO6EtKrWL%2bCujGzbS2OZ6taQS2MGiVnJOmSeZpcQ6df8YJkHXE%2fBJdwcvz30Q30vNJzqU%2fQcPTM"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • 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:1004
      • C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsClient.exe" "RunRole" "4e648cae-c0ac-413c-ac22-a3db47409cc5" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2916
      • C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsClient.exe" "RunRole" "4ec5ddd4-7fd6-47dd-bc68-e7d4d15e749d" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3344
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:3564

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            e593986.rbs

            • Path C:\Config.Msi\e593986.rbs
            • Size 214KB
            • SHA256 320af3b19dd5e72aaf07065149f5c5e315b85407905ed8d87177743dce7f7920
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Client.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.Client.dll
            • Size 412KB
            • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.ClientService.dll
            • Size 91KB
            • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientService.exe

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.ClientService.exe
            • Size 93KB
            • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Core.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.Core.dll
            • Size 577KB
            • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.Windows.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.Windows.dll
            • Size 1.7MB
            • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsAuthenticationPackage.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsAuthenticationPackage.dll
            • Size 254KB
            • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.WindowsCredentialProvider.dll

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\ScreenConnect.WindowsCredentialProvider.dll
            • Size 837KB
            • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            system.config

            • Path C:\Program Files (x86)\ScreenConnect Client (aa0708ab58a31f6b)\system.config
            • Size 972B
            • SHA256 8a7158cb58f7ad5dac8589e7813e4e44a23106fffe16fa0653d90729ee61a7cb
            • MD5 SHA1 SHA512 TLSH

            8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
            • Size 727B
            • SHA256 187b6e2163bda774ecdc0297009ad3b3a7f41e04f4c844d47cc0a691c61da13e
            • MD5 SHA1 SHA512 TLSH

            C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
            • Size 727B
            • SHA256 6d2d75d1a6eb0fe58611d3cc961aa193da86ee077c98ba511db3c8316ad5d35e
            • MD5 SHA1 SHA512 TLSH

            8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_59E89BCE9615F2B61F2F2C691688F111
            • Size 404B
            • SHA256 226cc4f4eec1fe9973d5d854a6475aafcaebbdf49a27aa88fc083fbca6d1bd78
            • MD5 SHA1 SHA512 TLSH

            C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141

            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\C8E534EE129F27D55460CE17FD628216_1130D9B25898B0DB0D4F04DC5B93F141
            • Size 412B
            • SHA256 5c7eae0e364e151cc7a7a6a200f2b407f94f655b6bb7dc072cf88f4cb128e447
            • MD5 SHA1 SHA512 TLSH

            rundll32.exe.log

            • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rundll32.exe.log
            • Size 746B
            • SHA256 ddebb6b1094dbef9e96754a74ebd4761d857864c9bd0b5f20a97259a6d7c8fe0
            • MD5 SHA1 SHA512 TLSH

            MSIECAD.tmp

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

            Microsoft.Deployment.WindowsInstaller.dll

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

            ScreenConnect.Core.dll

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

            ScreenConnect.InstallerActions.dll

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

            ScreenConnect.Windows.dll

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

            CustomAction.config

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF151.tmp-\CustomAction.config
            • Size 234B
            • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
            • MD5 SHA1 SHA512 TLSH

            ScreenConnect.WindowsInstaller.dll

            • Path C:\Users\Admin\AppData\Local\Temp\MSIF151.tmp-\ScreenConnect.WindowsInstaller.dll
            • Size 137KB
            • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
            • MD5 SHA1 SHA512 SSDEEP TLSH

            ScreenConnect.ClientSetup.msi

            • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\26.4.3.9662\aa0708ab58a31f6b\ScreenConnect.ClientSetup.msi
            • Size 9.8MB
            • SHA256 fb529e992d2ec48abb1b696ec39290aaa1d9cbaf77d7b48d6ffeec392851c43d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            MSI3BB8.tmp

            • Path C:\Windows\Installer\MSI3BB8.tmp
            • Size 202KB
            • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
            • MD5 SHA1 SHA512 SSDEEP TLSH

            2vjm2tkq.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa0708ab58a31f6b)\2vjm2tkq.newcfg
            • Size 884B
            • SHA256 908b3f2a384881ead3df43fcf49772489f8c3f15314a7149c6ec7351d8991601
            • MD5 SHA1 SHA512 TLSH

            user.config

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa0708ab58a31f6b)\user.config
            • Size 520B
            • SHA256 f6e89490111afad10de6795cb70f4953a08e56623e10dbad918920293ea08bd0
            • MD5 SHA1 SHA512 TLSH

            wnfdf3nw.newcfg

            • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (aa0708ab58a31f6b)\wnfdf3nw.newcfg
            • Size 683B
            • SHA256 da4315f900a176adf935e4b248d4f30dd316a4b31408bbe9763e8891aeec2042
            • MD5 SHA1 SHA512 TLSH

            metadata-2

            • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
            • Size 24.1MB
            • SHA256 2ff951382d2650e3dc35e31e64dc735600e7627851be8e5d344a586eafd2b5e9
            • MD5 SHA1 SHA512 SSDEEP TLSH

            {fef8c41d-723f-4cfd-b1dd-71a2931cf3e5}_OnDiskSnapshotProp

            • Path \??\Volume{63ef4f52-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{fef8c41d-723f-4cfd-b1dd-71a2931cf3e5}_OnDiskSnapshotProp
            • Size 6KB
            • SHA256 f2bf83c25c6907013b0f74cf4b7ce77ba6149822ae3140fb0364aa6ec6058246
            • MD5 SHA1 SHA512 SSDEEP TLSH

            memory/1004-172-0x0000000003B40000-0x0000000003BD4000-memory.dmp

            memory/1004-208-0x0000000003FB0000-0x000000000401C000-memory.dmp

            memory/1004-211-0x0000000003F40000-0x0000000003F81000-memory.dmp

            memory/1004-209-0x00000000040C0000-0x0000000004152000-memory.dmp

            memory/1004-189-0x0000000003D30000-0x0000000003D80000-memory.dmp

            memory/1004-213-0x00000000042A0000-0x0000000004376000-memory.dmp

            memory/1004-176-0x0000000003D90000-0x0000000003F40000-memory.dmp

            memory/1004-166-0x00000000014D0000-0x00000000014EA000-memory.dmp

            memory/2916-229-0x000000001B360000-0x000000001B3F4000-memory.dmp

            memory/2916-230-0x000000001B5B0000-0x000000001B760000-memory.dmp

            memory/2916-231-0x00000000023C0000-0x00000000023DA000-memory.dmp

            memory/2916-232-0x000000001C9A0000-0x000000001CB26000-memory.dmp

            memory/2916-228-0x0000000002460000-0x00000000024CC000-memory.dmp

            memory/2916-227-0x0000000000390000-0x000000000043E000-memory.dmp

            memory/3492-81-0x0000000002F80000-0x0000000002FA8000-memory.dmp

            memory/4936-5-0x00000000063D0000-0x00000000063F8000-memory.dmp

            memory/4936-4-0x0000000006490000-0x0000000006524000-memory.dmp

            memory/4936-6-0x0000000006520000-0x00000000066D0000-memory.dmp

            memory/4936-7-0x0000000006C80000-0x0000000007224000-memory.dmp

            memory/4936-3-0x0000000003D70000-0x0000000003D7C000-memory.dmp

            memory/4936-2-0x0000000006410000-0x0000000006420000-memory.dmp

            memory/4936-1-0x0000000003D40000-0x0000000003D48000-memory.dmp

            memory/4936-8-0x0000000006410000-0x0000000006420000-memory.dmp

            memory/4936-0-0x0000000006410000-0x0000000006420000-memory.dmp

            memory/4984-37-0x0000000005440000-0x000000000546E000-memory.dmp

            memory/4984-45-0x0000000005580000-0x0000000005614000-memory.dmp

            memory/4984-49-0x00000000057D0000-0x0000000005980000-memory.dmp

            memory/4984-41-0x0000000005480000-0x000000000548C000-memory.dmp