Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    21/04/2026, 09:59

General

  • Target
    bf70651adae1db15cd799bfe05ed0686dfb0a3fc7454cd8836ea4dd2543e4b27.exe
  • Size 11.4MB
  • Sample260421-l1d7pscv8l
  • SHA256 bf70651adae1db15cd799bfe05ed0686dfb0a3fc7454cd8836ea4dd2543e4b27
  • 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 2 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
  • Badlisted process makes network request 8 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 16 IoCs
  • Suspicious use of SendNotifyMessage 14 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:\Users\Admin\AppData\Local\Temp\bf70651adae1db15cd799bfe05ed0686dfb0a3fc7454cd8836ea4dd2543e4b27.exe
    "C:\Users\Admin\AppData\Local\Temp\bf70651adae1db15cd799bfe05ed0686dfb0a3fc7454cd8836ea4dd2543e4b27.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4136
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.4.25.9314\53096ac4ea6afa96\ScreenConnect.ClientSetup.msi"
      2⤵
      • Badlisted process makes network request
      • Enumerates connected drives
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      PID:3052
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • 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:924
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B6D97FE05D6DC82B0DC584E8D7928223 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2124
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240705000 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:448
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3328
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 2A0BD2C6D94B079F59F7F1F3D913F6D8
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4732
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding A25AB0D2795014F8424341BBA8DA200E E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2284
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:2080
    • C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-hirb01-relay.screenconnect.com&p=443&s=677e1a53-3b04-4745-9025-e5969007032e&k=BgIAAACkAABSU0ExAAgAAAEAAQDNztjW%2fqNzV7Ye7isDW4bPANMpAj9GjqDUTNvXu9j6H3sYvRxVhVNCv697xU3OY9FSewPXcYpYG%2f0S%2btrBL%2b2ev4DmNobTaUUiXK%2f53A2clqgI21WmvcEtPRRZgZ%2bDayCt4QiVi%2fB2QadPsUsEx5wVwBfyRZemNmve7s0vYXdUkyj6UxG%2bENjqp0ixLa5VXkOuafCnIvZsk4yKwbeXMpo5ZVBkLLEfOjhQwN47Sg1d6IdHgK7S%2bS5J2fLcsYdVXze9G4vWQo%2f1m68LFkZXL%2fYSeFKDCffHw7uZHz6m7eTWy8eyNrReuWW6RgkfNpwbXTDL%2bxvCPaEjP8m9xV2BhdLA&c=2108&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:4544
      • C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsClient.exe" "RunRole" "ce1a4287-4750-4ac9-8411-d827cb7def6e" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4536

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e5919d8.rbs

          • Path C:\Config.Msi\e5919d8.rbs
          • Size 214KB
          • SHA256 2e4365f356da5930600da13f153a40c902ca08e59875f2217f32b870b9cc7389
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\Client.en-US.resources
          • Size 64KB
          • SHA256 062a4b43d45d55746c88f3f1b0e4e8e376c5577133ed8d9e94c1e3251c341fc1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\Client.resources
          • Size 2KB
          • SHA256 4514129a17cafb2891674dd75cf25dfc3e2ac08a08f7adebeba3519f2313ac5e
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.Client.dll
          • Size 228KB
          • SHA256 5f3c1398a870b858717fe96badcdee4c61f7a094f25ae43066b3e89609a131c4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 8feedfba8746cf5956f3133882fd729691c810bb1a2937a89a3131240ff24a42
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 f9c621811f7d98a670a5a25c5aad8dbc3fb301ba81f90c61d5d67285058d164c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.Core.dll
          • Size 552KB
          • SHA256 16e4ca949e3b543a9aae9420ff5b2adcf0de2dfac9e735d822c9bfb53ed062d2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 8efd3582e622edd7c7d3a1fcef0a869254c410de09581ce018c9abc6b3a0274f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsClient.exe
          • Size 599KB
          • SHA256 c79526ce6eed74a509c7192decb2ce8988578cdbe3400c68b66395f9c2941e40
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (53096ac4ea6afa96)\system.config
          • Size 968B
          • SHA256 f26a0b799f833c5746314de82cecfe4595b02dd3ad32cc99c5ae6520ce5ca8f4
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 751B
          • SHA256 395294ca7519006c05e70ba272b889be2a766ab11cdc471a932b4d8c6562e58e
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\BA74182F76F15A9CF514DEF352303C95
          • Size 737B
          • SHA256 ceded167756e333f15a8abc1358b63233849949a26b6d9c886924ca44480e40f
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 50a3367220a633c33e5a4d39a268ffce42ec5715c349ff4c12117564c9ccb9fe
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 408B
          • SHA256 a017fff7596a6f1ae963a066670a9943ed26d3aac8d950c8476eef456453661f
          • MD5 SHA1 SHA512 TLSH

          BA74182F76F15A9CF514DEF352303C95

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\BA74182F76F15A9CF514DEF352303C95
          • Size 248B
          • SHA256 7ad961ae5f912bc2b842319d921251ac95aa0bddc8d824b3d8b21813c2a232ca
          • MD5 SHA1 SHA512 TLSH

          MSIDD99.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp
          • Size 1.0MB
          • SHA256 b90ac2e5a4f6a2ad7c1e7f842e133b1dc54f2d2e96c096f810bc279144c90cdc
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp-\ScreenConnect.Core.dll
          • Size 542KB
          • SHA256 15148976d1df0b7648ff4085ef2da7c32d767be8203542234f86820c7dd7f39c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 a750e0ec9269c71a2a5a1591f3da199c239ebf6d84acdee857b6e878e1c52174
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSIDD99.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 cca228d4d04731a91fff3cc4a0551be447090c0e5c87dcc721ca6199bb1f26a9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientSetup.msi

          • Path C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.4.25.9314\53096ac4ea6afa96\ScreenConnect.ClientSetup.msi
          • Size 9.0MB
          • SHA256 eb210f1ae88cdb19a18cc0e6421d60908dd515f3ab6f85383c32844a92d98b2e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI5664.tmp

          • Path C:\Windows\Installer\MSI5664.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 5108c904048015d0333b5fbbbd110c39827cda16724fd45cbdc100bffaf2d123
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {56d8a9f0-caed-4594-873f-94efdfcdd1a9}_OnDiskSnapshotProp

          • Path \??\Volume{8f991d9f-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{56d8a9f0-caed-4594-873f-94efdfcdd1a9}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 e0073e244f555dccbfbd65aa223c350a95bfef4209267d2493d6bc279aa04817
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/448-52-0x0000000002D30000-0x0000000002D3A000-memory.dmp

          memory/448-60-0x00000000053B0000-0x000000000555E000-memory.dmp

          memory/448-66-0x0000000000E80000-0x0000000000F3B000-memory.dmp

          memory/448-56-0x0000000005170000-0x00000000051FE000-memory.dmp

          memory/448-48-0x00000000050B0000-0x00000000050DE000-memory.dmp

          memory/924-77-0x000001DBCA8E0000-0x000001DBCA8EC000-memory.dmp

          memory/2080-69-0x0000014FC68C0000-0x0000014FC696E000-memory.dmp

          memory/2124-68-0x0000000000680000-0x000000000073B000-memory.dmp

          memory/2124-154-0x0000000000680000-0x000000000073B000-memory.dmp

          memory/2284-155-0x0000000001000000-0x00000000010BB000-memory.dmp

          memory/3052-67-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/3052-16-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/3052-17-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/3052-20-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/3052-157-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/3052-76-0x00000000012D0000-0x000000000138B000-memory.dmp

          memory/4136-8-0x0000000005F10000-0x0000000005FA2000-memory.dmp

          memory/4136-4-0x0000000005BB0000-0x0000000005C3E000-memory.dmp

          memory/4136-10-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          memory/4136-1-0x0000000003500000-0x0000000003508000-memory.dmp

          memory/4136-9-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          memory/4136-2-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          memory/4136-14-0x0000000005E60000-0x0000000005E66000-memory.dmp

          memory/4136-3-0x0000000005AE0000-0x0000000005AE8000-memory.dmp

          memory/4136-7-0x00000000063B0000-0x0000000006956000-memory.dmp

          memory/4136-6-0x0000000005C40000-0x0000000005DEE000-memory.dmp

          memory/4136-5-0x0000000005B80000-0x0000000005BA4000-memory.dmp

          memory/4136-0-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          memory/4136-13-0x0000000005A60000-0x0000000005AC4000-memory.dmp

          memory/4536-165-0x0000000002D70000-0x0000000002DAE000-memory.dmp

          memory/4536-177-0x000000001C580000-0x000000001C69E000-memory.dmp

          memory/4536-176-0x0000000001350000-0x000000000135C000-memory.dmp

          memory/4536-170-0x000000001B6E0000-0x000000001B6F8000-memory.dmp

          memory/4536-169-0x0000000001390000-0x00000000013A8000-memory.dmp

          memory/4536-168-0x000000001C050000-0x000000001C1D8000-memory.dmp

          memory/4536-167-0x000000001BD10000-0x000000001BEBE000-memory.dmp

          memory/4536-166-0x000000001BAD0000-0x000000001BB5E000-memory.dmp

          memory/4536-164-0x0000000000AC0000-0x0000000000B5A000-memory.dmp

          memory/4544-140-0x00000000040C0000-0x00000000040FE000-memory.dmp

          memory/4544-132-0x0000000003F10000-0x00000000040BE000-memory.dmp

          memory/4544-134-0x0000000003EB0000-0x0000000003F00000-memory.dmp

          memory/4544-122-0x0000000003BA0000-0x0000000003BB8000-memory.dmp

          memory/4544-128-0x0000000003C60000-0x0000000003CEE000-memory.dmp

          memory/4544-152-0x0000000004400000-0x00000000044D5000-memory.dmp

          memory/4544-173-0x0000000003B80000-0x0000000003B8B000-memory.dmp

          memory/4544-174-0x0000000004100000-0x0000000004137000-memory.dmp

          memory/4544-175-0x0000000004660000-0x0000000004666000-memory.dmp

          memory/4544-150-0x0000000004140000-0x0000000004181000-memory.dmp

          memory/4732-156-0x0000000000C30000-0x0000000000CEB000-memory.dmp