Analysis

  • max time kernel
    149s
  • max time network
    126s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    27/08/2026, 12:29

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 13.9MB
  • Sample260827-pn76sshk3x
  • SHA256 9a6a2a3a88cde3da3256143d6094219a252adae010ad19886119a4fd82a663bc
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 5 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 10 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 13 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 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 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
    PID:4240
  • 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:4652
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 008E197280DE4D6A4ED12BAC3B30B896 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3720
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID174.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240702140 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3180
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID88A.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240703625 11 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1632
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDED4.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240705250 18 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5004
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4564
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding F2054ED388351AE3474A4BA407F9359F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4692
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 89005BAEB5A2A0D485B7AFD3F161D4F8 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:380
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:1668
    • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-coavq0-relay.screenconnect.com&p=443&s=86e3e95f-5988-49b0-82a9-58624cc3be00&k=BgIAAACkAABSU0ExAAgAAAEAAQCBO9tPvg5qPurW6qEvp9bUmW9mYzEm7o6yAFHTWSiFpJUPxyd86wxZabgPwagG7A6%2fXKMmY0E1n%2boZQO9a7xuH9q5G2JGTdmiFAM0w%2f7km1A%2b2nB6dNxYxc77fGCOp2OMgPv%2bFuFtWrvzeCyA7RzqeBVPJtzohXZk7kmhY2I01AwWEzFkHCexhIxD9AVRLThFZhImG%2bylaxX9ORTvzfvFaTxVCRnMte9pCKtjtTTw8M6jMBV17r4SXYpS0KUpcksBoo%2bozl1Jcq3eOEh34SUskDA29Qxg%2fF%2fBjBkLmO%2b99bBzOP0S1dWcjhJSaB7nffgZS951U4%2fC1FlYivi4oU2vh&c=Eye%20Clinic&c=&c=Surgery&c=Personal&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:1076
      • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "e883557c-2e19-4e1d-a9df-c3fc2956a87e" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3572
      • C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsClient.exe" "RunRole" "fc9d2355-3a4c-4c79-8566-bc8e81658d31" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4552

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5922a2.rbs

          • Path C:\Config.Msi\e5922a2.rbs
          • Size 214KB
          • SHA256 e71905a5eba9d482946f7a8d8e6ce7bb4c7a5b6fa237994d53a2c2181a6f8d0c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.Override.en-US.resources
          • Size 256B
          • SHA256 28b9226583d81800feaa9909bd0b0bf8a44bcbd97e66246c1d17162582fd46b3
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 4010ea184982e71ad71e76b43266488c954f665324b89ef042cea9e463a60c9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.dll
          • Size 91KB
          • SHA256 6e6aa42b107d3e82b7b7dc18a75eee3f09e9f268788c0a7edbbc617152adf178
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a94ecccb5b88e3860d619fbb3b87ff4af6448240ab65b89d610f348d75e793f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Core.dll
          • Size 577KB
          • SHA256 eedbd9ba4755f238af397c71b575082e18a31eabacc22abb4949f92fe991e169
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 305663a05c77c8058569a976db740aa2f20b66583f0381059633b628376570fc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 ce75ee1188726b49d46477166faac6f8715ca1aa4afc5b8a687fcbfcd541c0c2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\app.config
          • Size 1KB
          • SHA256 153a4b7722eae4a903301c18977dc8a803ca2c28464a0a25adba687c62f194d7
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (a25d630ec868238a)\system.config
          • Size 966B
          • SHA256 ed4ff0cac6b33b29810e91bc1cc07f41c37f5ec7eae787f70d9237477dbb8412
          • MD5 SHA1 SHA512 TLSH

          1A374813EDB1A6631387E414D3E73232

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1A374813EDB1A6631387E414D3E73232
          • Size 178KB
          • SHA256 0b297e07b0ebb1c95f28eb579a0aa2f95eb01aa58cf73a6f914bc15a94bf4181
          • MD5 SHA1 SHA512 SSDEEP TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 70efc54c8a42a73770348a98aba48e9913ffe2cc78c9fb1f0e380f58b286e150
          • MD5 SHA1 SHA512 TLSH

          1A374813EDB1A6631387E414D3E73232

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1A374813EDB1A6631387E414D3E73232
          • Size 306B
          • SHA256 9180c5e8309654636820c72d02f7f5434ae12ae9c891d0f31212dd45377810d8
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 eaff6890615c18b43ba93695f343043da75b3f9c85dae3cbfdb61c9534ab6214
          • 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

          MSID174.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSID174.tmp
          • Size 1.1MB
          • SHA256 18bacfd2a7c95800b6279cb8731bf03c8bbb526f5bc3790254a8e06d7ceee8ad
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID174.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID174.tmp-\ScreenConnect.Core.dll
          • Size 567KB
          • SHA256 15fec18d3a8990cdb540897ede61227353165668048c001164fcd22233cc8390
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID174.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 c1142cc3ae09a7d3b5392539c29cbeb585543a38c93e37e55d82cbe0bb56d588
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID174.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ae3005e1ca932eccde09c479fde2ecf8ea2feeb908dec4f0c830eab671276454
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSID88A.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID88A.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 7c27380976a5befc5a947e129eb464123f46d06cf0eb7f984ced921f36e1d0e7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2523.tmp

          • Path C:\Windows\Installer\MSI2523.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5922a1.msi

          • Path C:\Windows\Installer\e5922a1.msi
          • Size 13.9MB
          • SHA256 9a6a2a3a88cde3da3256143d6094219a252adae010ad19886119a4fd82a663bc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          rla1uui0.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\rla1uui0.newcfg
          • Size 683B
          • SHA256 5e2081e2dcac13454949600b9199b5715d8024413b656207e1a74e0cd2c52c79
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\user.config
          • Size 520B
          • SHA256 5750f2579c122d27f36df6c418ee0a4904ab2bd0116b3c9686d06f395f07fafc
          • MD5 SHA1 SHA512 TLSH

          vy14f5n4.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (a25d630ec868238a)\vy14f5n4.newcfg
          • Size 884B
          • SHA256 6fbc398bfe3294f0c24255710b9c9b7e348cf4e3c26083337cda34c3f75b5aec
          • MD5 SHA1 SHA512 TLSH

          memory/1076-163-0x0000000003FF0000-0x0000000004084000-memory.dmp

          memory/1076-157-0x0000000003DF0000-0x0000000003E0A000-memory.dmp

          memory/1076-189-0x0000000004460000-0x00000000044CC000-memory.dmp

          memory/1076-196-0x0000000004570000-0x0000000004602000-memory.dmp

          memory/1076-170-0x0000000004190000-0x00000000041E0000-memory.dmp

          memory/1076-167-0x0000000004240000-0x00000000043F0000-memory.dmp

          memory/1076-202-0x00000000041E0000-0x0000000004221000-memory.dmp

          memory/1076-204-0x0000000004750000-0x0000000004826000-memory.dmp

          memory/1632-74-0x0000000004800000-0x0000000004828000-memory.dmp

          memory/3180-42-0x0000000005430000-0x00000000059D4000-memory.dmp

          memory/3180-37-0x0000000004A80000-0x0000000004B14000-memory.dmp

          memory/3180-33-0x00000000049D0000-0x00000000049DC000-memory.dmp

          memory/3180-29-0x0000000004980000-0x00000000049AE000-memory.dmp

          memory/3180-41-0x0000000004CD0000-0x0000000004E80000-memory.dmp

          memory/3572-223-0x000000001B4D0000-0x000000001B53C000-memory.dmp

          memory/3572-224-0x000000001B930000-0x000000001B9C4000-memory.dmp

          memory/3572-222-0x0000000000950000-0x00000000009FE000-memory.dmp

          memory/3572-225-0x000000001BB80000-0x000000001BD30000-memory.dmp

          memory/3572-226-0x000000001B480000-0x000000001B49A000-memory.dmp

          memory/3572-227-0x000000001C0C0000-0x000000001C246000-memory.dmp

          memory/3572-228-0x000000001B540000-0x000000001B581000-memory.dmp