Analysis

  • max time kernel
    149s
  • max time network
    119s
  • 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, 12:19

General

  • Target
    VpnInstaller.exe
  • Size 6.7MB
  • Sample260415-pg7xfsdx2m
  • SHA256 318b16bcf20c1fe089cf34941441a2908b159e3890b48b3fda7b49b0a2f7999e
  • 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.

  • Checks for any installed AV software in registry 1 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Executes dropped EXE 3 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Loads dropped DLL 16 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 6 IoCs
  • Modifies registry class 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VpnInstaller.exe
    "C:\Users\Admin\AppData\Local\Temp\VpnInstaller.exe"
    1⤵
    • Sets service image path in registry
    • Checks for any installed AV software in registry
    • Drops file in Program Files directory
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4800
    • C:\Windows\SysWOW64\sc.exe
      "C:\Windows\system32\sc.exe" failure AviraPhantomVPN reset= 86400 actions= restart/5000/restart/10000//1000
      2⤵
      • Launches sc.exe
      • System Location Discovery: System Language Discovery
      PID:5244
  • C:\Program Files (x86)\Avira\VPN\Avira.VpnService.exe
    "C:\Program Files (x86)\Avira\VPN\Avira.VpnService.exe"
    1⤵
    • Checks for any installed AV software in registry
    • Executes dropped EXE
    • Checks processor information in registry
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5500
    • C:\Program Files (x86)\Avira\VPN\Avira.NetworkBlocker.exe
      "C:\Program Files (x86)\Avira\VPN\Avira.NetworkBlocker.exe" delete
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:5604
  • C:\Program Files (x86)\Avira\VPN\Avira.WebAppHost.exe
    "C:\Program Files (x86)\Avira\VPN\Avira.WebAppHost.exe" /migrateSettings
    1⤵
    • Executes dropped EXE
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3572

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        no.png

        • Path C:\Program Files (x86)\Avira\VPN\App\images\png\regions\no.png
        • Size 743B
        • SHA256 3cf52e677d7f7be201cbf6e3ec56ed1f48b95c47e5969ef2c2510e270133c4f0
        • MD5 SHA1 SHA512 TLSH

        Avira.Acp.Common.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Acp.Common.dll
        • Size 17KB
        • SHA256 b738ee32b11a58b74686ccd551d0d33b58c3b335d9ba8998ba291c805340c455
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.Acp.Resources.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Acp.Resources.dll
        • Size 54KB
        • SHA256 839942ba4c0e36ad27355f65acf6520bbd6fa0967bfd3d9d6ddec520ca4fc3c9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.Acp.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Acp.dll
        • Size 154KB
        • SHA256 19f6be72656bc0df0ab8849ed1e87f92af256228a569fcc330c7d836527176c2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.Common.Acp.AppClient.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Common.Acp.AppClient.dll
        • Size 45KB
        • SHA256 61a6f383852f1c2e9699c6c8c4e77580eb102d3c8ff653c27179b36d364b4ba0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.Common.Core.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Common.Core.dll
        • Size 69KB
        • SHA256 6c5b87fad485e497d5e197a7b13da27ea4facde695cd05dd6edef2e4ae3247ad
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.Messaging.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.Messaging.dll
        • Size 48KB
        • SHA256 18a1c592f221731a710d8a9ef97d811a78411897b14c219206cebb0f78b550f7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.NetworkBlocker.exe

        • Path C:\Program Files (x86)\Avira\VPN\Avira.NetworkBlocker.exe
        • Size 231KB
        • SHA256 c69d3dee3e0c26dcaeb59ba40f7d8bbdbbfdb1444307d59add27de20f976240b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VPN.Acp.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VPN.Acp.dll
        • Size 33KB
        • SHA256 73d94e738bd4f5b726cda5797a597a17d5533c773a513b6c219f95585ce78c2f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VPN.Core.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VPN.Core.dll
        • Size 155KB
        • SHA256 6e14e9ee345b6eccee23ff7978f07cfaeb741f7ac2804d959023425900edb237
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VPN.NotifierClient.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VPN.NotifierClient.dll
        • Size 29KB
        • SHA256 70c45706580a79e9789a7030e7a971995bba18930aaf34838f16f72cb66ecbed
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VPN.OeConnector.dll

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VPN.OeConnector.dll
        • Size 42KB
        • SHA256 f6ee56ba04ca40f4b09cc7711ae7919fa7fc64c1791d31a393324c91e62114b7
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VpnService.exe

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VpnService.exe
        • Size 394KB
        • SHA256 f2162507b812680c842d4f14fd35ebc89cb509450e2d431a049bc9a7b7719c1e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VpnService.exe.config

        • Path C:\Program Files (x86)\Avira\VPN\Avira.VpnService.exe.config
        • Size 7KB
        • SHA256 26609d9d2352ce7569cb7771270e0f926eefaa86d7e92650f753a706db512ebb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.WebAppHost.exe

        • Path C:\Program Files (x86)\Avira\VPN\Avira.WebAppHost.exe
        • Size 824KB
        • SHA256 1139a8c5b872b774f23fc6b0f9c6a366f41f3fbe1e95703cb6c65cd03c37005e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.WebAppHost.exe.config

        • Path C:\Program Files (x86)\Avira\VPN\Avira.WebAppHost.exe.config
        • Size 2KB
        • SHA256 d2d75be243f2985bce5cda333b827429509330fe5a3b4d3e2812c42394f870c0
        • MD5 SHA1 SHA512 TLSH

        ProductSettings.json

        • Path C:\Program Files (x86)\Avira\VPN\Defaults\ProductSettings.json
        • Size 1KB
        • SHA256 7e84e38c4b147fa13e871249a9986c4621176ed0afc88c999901e354f603d096
        • MD5 SHA1 SHA512 TLSH

        Messaging.dll

        • Path C:\Program Files (x86)\Avira\VPN\Messaging.dll
        • Size 38KB
        • SHA256 2dabccb49edd4ea3c6fd585088c4c51a0c0d3bb2fa69e9aef91c0eef486a5de5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Newtonsoft.Json.dll

        • Path C:\Program Files (x86)\Avira\VPN\Newtonsoft.Json.dll
        • Size 701KB
        • SHA256 cd59cc9622b588afb1e16ea9dd1e28d46a1e06b62f05e9aaace0fdc5c4268ab2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Serilog.Sinks.File.dll

        • Path C:\Program Files (x86)\Avira\VPN\Serilog.Sinks.File.dll
        • Size 37KB
        • SHA256 dac5243b7ebf8e8a20e1a759523b9a2b1edc56ad80f4bfe4e1afc028cbfebae1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Serilog.dll

        • Path C:\Program Files (x86)\Avira\VPN\Serilog.dll
        • Size 153KB
        • SHA256 0a77ec95c2e5b43c2b5fc1f654475d1d0d227fd7b19fca324c42acce174f6bfd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ServiceStack.Text.dll

        • Path C:\Program Files (x86)\Avira\VPN\ServiceStack.Text.dll
        • Size 199KB
        • SHA256 678b767a6b621020b00b3920943105f2ae44b6f729e25c4539847021249797d0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        SharpRaven.dll

        • Path C:\Program Files (x86)\Avira\VPN\SharpRaven.dll
        • Size 103KB
        • SHA256 74d9c20e3d52a7eab8c810dde770155b1b4a899c82d0f748ababdfb39c7d499e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.Diagnostics.DiagnosticSource.dll

        • Path C:\Program Files (x86)\Avira\VPN\System.Diagnostics.DiagnosticSource.dll
        • Size 172KB
        • SHA256 7d79a90e94abbdfa79c901faaabda24f33ffc21b259b2cfdfecb5195575fb79d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VPN.Core.dll

        • Path C:\Program Files (x86)\Avira\VPN\VPN.Core.dll
        • Size 189KB
        • SHA256 cb71a544ad3f33c93daf0b90ff87d48fbd4713b00889d98be542202acd762f8a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Avira.VpnService.resources.dll

        • Path C:\Program Files (x86)\Avira\VPN\en-US\Avira.VpnService.resources.dll
        • Size 23KB
        • SHA256 25f5cb88461617650c2c40201cb9066a0fda9935408697628b54ae2e1f03ae2c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VpnPrivateSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.backup
        • Size 429B
        • SHA256 35a033f7077db801021a2a210597023965ecfeff5927c5384200c49bbff09e59
        • MD5 SHA1 SHA512 TLSH

        VpnPrivateSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.backup
        • Size 5KB
        • SHA256 d2062add4e668ba1f099bd3daee65d3ca2b67b5c5bb77b685ee5c26056ff5ef6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VpnPrivateSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.backup
        • Size 5KB
        • SHA256 e8f60d72d2b748697eb97c0521723fdb2ed5296378849a8f13ce1443e596fd37
        • MD5 SHA1 SHA512 SSDEEP TLSH

        VpnPrivateSettings.config

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.config
        • Size 262B
        • SHA256 291ed56031d965d67d3d05fa08341680bd9b4c33fca31abce28a43caf10f8f4a
        • MD5 SHA1 SHA512 TLSH

        VpnPrivateSettings.config

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.config
        • Size 534B
        • SHA256 fb890f5119180325a177c05a83c560edc9d0f0bb47f1763051c36875f573e60f
        • MD5 SHA1 SHA512 TLSH

        VpnPrivateSettings.config

        • Path C:\ProgramData\Avira\VPN\VpnPrivateSettings.config
        • Size 66B
        • SHA256 cc05bd02cb929f5ef7a9362698d7794845899dd6510fd41eb5f0a95d708a68dc
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.backup
        • Size 346B
        • SHA256 b1fffa75c975d475b35f4f292b9a0e88890e6d990b7ca3e63b7e4979c8e5c101
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.backup
        • Size 417B
        • SHA256 86a0fd28d8da2d9a27710d04e13d25407b5a61951b9c148b004d79f68c7e202d
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.backup
        • Size 710B
        • SHA256 ed4dccac72e79b41efb8c50dae3534fb0976d48727779b19a4d8f717fd746f8e
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.backup

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.backup
        • Size 233B
        • SHA256 cbf01a315acc02261f509941f896bc30d4e37ff6c894a3884e2d6420f98172e3
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.config

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.config
        • Size 270B
        • SHA256 56950acf510c4e80b5b3ff1e498e6cd4dbc005b61ced18f89feec1609615951e
        • MD5 SHA1 SHA512 TLSH

        VpnSharedSettings.config

        • Path C:\ProgramData\Avira\VPN\VpnSharedSettings.config
        • Size 149B
        • SHA256 e36f4979e64b3e1e40047f18a367f108e8be510c9b97139db2b050236e04142c
        • MD5 SHA1 SHA512 TLSH

        vpndbg.log

        • Path C:\ProgramData\Avira\VPN\vpndbg.log
        • Size 1KB
        • SHA256 ea36b03b53f170103d5dc3c923bfaf51ce9fb3e478953b093fb57f0f6132c6c8
        • MD5 SHA1 SHA512 TLSH

        FindProcDLL.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\FindProcDLL.dll
        • Size 3KB
        • SHA256 7ffc549e7f679a08c77fa230654b77cdffb3444296bb7c6b8b5769db374b61ee
        • MD5 SHA1 SHA512 TLSH

        INetC.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\INetC.dll
        • Size 21KB
        • SHA256 5520208a33e6409c129b4ea1270771f741d95afe5b048c2a1e6a2cc2ad829934
        • MD5 SHA1 SHA512 SSDEEP TLSH

        System.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\System.dll
        • Size 12KB
        • SHA256 a44ca08afb3f6bafd76aa35c259f3d599fe34f6f49ea5118626c1c1a540b0f03
        • MD5 SHA1 SHA512 SSDEEP TLSH

        base64.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\base64.dll
        • Size 40KB
        • SHA256 7e10ef2723a50b7346449f8bb39efab8a99e2815d33d311ecb8112734f91519d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsExec.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\nsExec.dll
        • Size 6KB
        • SHA256 e20666c498941d36bfd0eae411ad73c475d043cee39b50c31734a70eecaae0bb
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsProcess.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\nsProcess.dll
        • Size 70KB
        • SHA256 8f80ef429ce7c8a1ac7958ab36ec177f732dc924d14b21230da045e5ed1b255a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        nsisXML.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\nsisXML.dll
        • Size 12KB
        • SHA256 77aa1a74a556f00f16baf9b94637fa997bd4085695ba81bf496223644e43e815
        • MD5 SHA1 SHA512 SSDEEP TLSH

        registry.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsistemp\nsc174D.tmp\registry.dll
        • Size 24KB
        • SHA256 0b25b20f26de5d5bd795f934c70447112b4981343fcb2dfab3374a4018d28c2d
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3572-1127-0x000001BAD2A70000-0x000001BAD2AA1000-memory.dmp

        memory/3572-1128-0x000001BAD2B10000-0x000001BAD2B1C000-memory.dmp

        memory/3572-1091-0x000001BAD2600000-0x000001BAD26CE000-memory.dmp

        memory/4800-1017-0x0000000003E10000-0x0000000003E1B000-memory.dmp

        memory/4800-1072-0x00000000009C0000-0x0000000000A81000-memory.dmp

        memory/4800-23-0x00000000009C0000-0x0000000000A81000-memory.dmp

        memory/4800-948-0x0000000006310000-0x0000000006369000-memory.dmp

        memory/5500-1097-0x00000257801A0000-0x00000257801AE000-memory.dmp

        memory/5500-969-0x0000025780020000-0x000002578002C000-memory.dmp

        memory/5500-1112-0x00000257802D0000-0x00000257802DA000-memory.dmp

        memory/5500-1110-0x00000257804F0000-0x000002578059A000-memory.dmp

        memory/5500-1107-0x0000025780400000-0x0000025780434000-memory.dmp

        memory/5500-1045-0x0000025780180000-0x000002578019E000-memory.dmp

        memory/5500-1105-0x00000257802B0000-0x00000257802BE000-memory.dmp

        memory/5500-1044-0x0000025780320000-0x0000025780396000-memory.dmp

        memory/5500-991-0x00000257800A0000-0x00000257800A8000-memory.dmp

        memory/5500-1101-0x00000257802E0000-0x000002578030A000-memory.dmp

        memory/5500-990-0x0000025780270000-0x000002578029E000-memory.dmp

        memory/5500-1099-0x00000257802A0000-0x00000257802AC000-memory.dmp

        memory/5500-988-0x0000025780030000-0x0000025780040000-memory.dmp

        memory/5500-1088-0x0000025780120000-0x000002578012E000-memory.dmp

        memory/5500-1090-0x0000025780130000-0x000002578013A000-memory.dmp

        memory/5500-986-0x0000025780160000-0x000002578017C000-memory.dmp

        memory/5500-966-0x00000257800F0000-0x0000025780112000-memory.dmp

        memory/5500-967-0x00000257192F0000-0x0000025719300000-memory.dmp

        memory/5500-971-0x0000025780140000-0x0000025780154000-memory.dmp

        memory/5500-956-0x000002577FFA0000-0x0000025780004000-memory.dmp

        memory/5500-960-0x00000257800B0000-0x00000257800E2000-memory.dmp

        memory/5500-964-0x00000257801B0000-0x0000025780262000-memory.dmp

        memory/5500-962-0x0000025780070000-0x000002578009A000-memory.dmp

        memory/5500-958-0x0000025780040000-0x000002578006A000-memory.dmp

        memory/5500-1154-0x0000025719CD0000-0x000002571A1F8000-memory.dmp

        memory/5500-1109-0x00000257802C0000-0x00000257802C8000-memory.dmp

        memory/5500-1161-0x0000025780490000-0x00000257804DA000-memory.dmp

        memory/5500-1170-0x00000257003D0000-0x00000257003DC000-memory.dmp

        memory/5500-1171-0x00000257008F0000-0x0000025700902000-memory.dmp

        memory/5500-1172-0x00000257192F0000-0x0000025719300000-memory.dmp

        memory/5500-1103-0x00000257803A0000-0x00000257803B2000-memory.dmp