Resubmissions

29/10/2026, 22:27

261029-2c978sft3z6

29/10/2026, 22:20

261029-19dpvsttex5

Analysis

  • user interaction
    yes
  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    29/10/2026, 22:20

General

  • Target
    bitdefender_avfree.exe
  • Size 21.5MB
  • Sample261029-19dpvsttex
  • SHA256 840398d70bffeb58325dbf9bdab576c6df9a02552a6b3c56040edf08dc97d1f9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Drops file in System32 directory 10 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
  • Drops file in Windows directory 1 IoCs
  • Executes dropped EXE 14 IoCs
  • Loads dropped DLL 64 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 14 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 16 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 64 IoCs
  • Modifies registry class 50 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bitdefender_avfree.exe
    "C:\Users\Admin\AppData\Local\Temp\bitdefender_avfree.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1144
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\agent_launcher.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\agent_launcher.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2784
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\bddeploy.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\bddeploy.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2804
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\setuppackage.exe
          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\setuppackage.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:5376
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\installer.exe
          "C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\installer.exe"
          4⤵
          • Drops file in Program Files directory
          • Executes dropped EXE
          • Loads dropped DLL
          • Reads the TCP/IP host and domain name from the registry
          • System Location Discovery: System Language Discovery
          • Modifies system certificate store
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1800
          • C:\Program Files\Bitdefender Agent\ProductAgentService.exe
            "C:\Program Files\Bitdefender Agent\ProductAgentService.exe" install
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Reads the TCP/IP host and domain name from the registry
            • System Location Discovery: System Language Discovery
            PID:4284
          • C:\Program Files\Bitdefender Agent\ProductAgentService.exe
            "C:\Program Files\Bitdefender Agent\ProductAgentService.exe" enable
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Reads the TCP/IP host and domain name from the registry
            • System Location Discovery: System Language Discovery
            PID:704
          • C:\Program Files\Bitdefender Agent\ProductAgentService.exe
            "C:\Program Files\Bitdefender Agent\ProductAgentService.exe" start "C:\Users\Admin\AppData\Local\Temp\bitdefender_avfree.exe"
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Reads the TCP/IP host and domain name from the registry
            • System Location Discovery: System Language Discovery
            PID:3012
  • C:\Program Files\Bitdefender Agent\redline\bdredline.exe
    "C:\Program Files\Bitdefender Agent\redline\bdredline.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    PID:1700
  • C:\Program Files\Bitdefender Agent\ProductAgentService.exe
    "C:\Program Files\Bitdefender Agent\ProductAgentService.exe"
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    PID:2152
  • C:\Program Files\Bitdefender Agent\ProductAgentService.exe
    "C:\Program Files\Bitdefender Agent\ProductAgentService.exe"
    1⤵
    • Drops file in System32 directory
    • Executes dropped EXE
    • Loads dropped DLL
    • Reads the TCP/IP host and domain name from the registry
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1404
    • C:\Program Files\Bitdefender Agent\27.1.1.50\DiscoverySrv.exe
      "C:\Program Files\Bitdefender Agent\27.1.1.50\DiscoverySrv.exe" install
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious use of WriteProcessMemory
      PID:1140
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32 /s "C:\Program Files\Bitdefender Agent\27.1.1.50\DiscoveryComp.dll"
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:980
    • C:\Program Files\Bitdefender Agent\27.1.1.50\DiscoverySrv.exe
      "C:\Program Files\Bitdefender Agent\27.1.1.50\DiscoverySrv.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:4760
    • C:\Program Files\Bitdefender Agent\27.1.1.50\ProductAgentUI.exe
      "C:\Program Files\Bitdefender Agent\27.1.1.50\ProductAgentUI.exe" show=progress event_retry=Global\7295237F-E98C-4C46-A4A4-07F0D66278C2 app_name="Bitdefender Security"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:5984
    • C:\Program Files\Bitdefender Agent\27.1.1.50\WatchDog.exe
      "C:\Program Files\Bitdefender Agent\27.1.1.50\WatchDog.exe" install
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      PID:2044
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s upnphost
    1⤵
    • Drops file in Windows directory
    PID:5608
  • C:\Program Files\Bitdefender Agent\27.1.1.50\WatchDog.exe
    "C:\Program Files\Bitdefender Agent\27.1.1.50\WatchDog.exe"
    1⤵
      PID:1524

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          ProductAgent.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\ProductAgent.dll
          • Size 4.7MB
          • SHA256 764acb765ade58caab2275d47299fd5ce5c67c02c3a9475fb4ffb7bf987d594c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ProductAgentService.exe

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\ProductAgentService.exe
          • Size 767KB
          • SHA256 ab0d946d8874f848103106d7a818abb8c726121bce9079584067b6ab78d054a2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ProductAgentUI.exe

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\ProductAgentUI.exe
          • Size 2.2MB
          • SHA256 173249e773571d5790d96d3620b2699c60564ee6993c2f863592dc77da93bebf
          • MD5 SHA1 SHA512 SSDEEP TLSH

          WebView2Loader.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\WebView2Loader.dll
          • Size 113KB
          • SHA256 256510c2872a3a96a8e0a7db0db6c6e7b31ebed34cd6b7c430712ca640c73842
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bdec.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdec.dll
          • Size 773KB
          • SHA256 6046ff6d987302ced7bcca2defc79abb1a4c4aaf111afc8b75bc937a2ce63484
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bdec.ini

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdec.ini
          • Size 129B
          • SHA256 e8d31c1de790f738ef75daa0402584560a0672402d0d3ded0899d2dbc95fb911
          • MD5 SHA1 SHA512 TLSH

          bdnc.client_id

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdnc.client_id
          • Size 36B
          • SHA256 e6e827f81840ce8975cd5e30467ddc1661c3f407cd9d342d00800f32c01dcc26
          • MD5 SHA1 SHA512

          bdnc.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdnc.dll
          • Size 3.3MB
          • SHA256 8d2d60546cc4fd9d21bee75897a5450e76d00b744098b369ba34b6d3c0166964
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bdnc.ini

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdnc.ini
          • Size 164B
          • SHA256 dd5c7a764b9fea6f8c458d9b669b5764c46284dea68ce52b43136c4812d27fd7
          • MD5 SHA1 SHA512 TLSH

          bdnc.ini.md5

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdnc.ini.md5
          • Size 32B
          • SHA256 213cfb0620fe3151000010d50fae1c81f519b3209497ebf8df85c34911de68bb
          • MD5 SHA1 SHA512

          bdnc.uuid

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\bdnc.uuid
          • Size 36B
          • SHA256 0fc553f6cc7c737846fe1d80dd6331c26b43fc6581a54abd0209df96bd926d65
          • MD5 SHA1 SHA512

          bdch.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\crash_handler\bdch.dll
          • Size 2.3MB
          • SHA256 5b19045417aeb7d8ceedefaab775ffc8c726a8db8c17a7ad3fa4b2786c5ed8d0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bdch.json

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\crash_handler\bdch.json
          • Size 1KB
          • SHA256 9fc09799c09529b83741c7f364e330412085e56de72776ae414e9ea17d9bf1fc
          • MD5 SHA1 SHA512 TLSH

          bdnc.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\crash_handler\bdnc.dll
          • Size 459KB
          • SHA256 c9ba35a61456669b400c609fcfd57abb3d7ee15c614b655333310ae933690666
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bdreinit.exe

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\crash_handler\bdreinit.exe
          • Size 1.6MB
          • SHA256 8c730ada59e9e05f86de5d234d9e0b99d45910f8927e63f10d23d11d0f3c9e18
          • MD5 SHA1 SHA512 SSDEEP TLSH

          iservconfig.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\iservconfig.dll
          • Size 779KB
          • SHA256 117bd5e5c69cc0011396370a8b0b92f9a9fbca390ccf980dc676c4897b2244d8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          log.dll

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\log.dll
          • Size 313KB
          • SHA256 9be0db68d1aa599aaf199e81789706bbffb9a2b4d5643aeb9a5a9df25506bdfb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          LoggerConfig.xml

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\settings\LoggerConfig.xml
          • Size 84B
          • SHA256 5aa4fa764817f67f3993ab404bb65dd85abe05f7d4e0231311dd767f3bcaa215
          • MD5 SHA1 SHA512 TLSH

          ProductAgent.json

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\settings\ProductAgent.json
          • Size 1KB
          • SHA256 384f8bfc98c6c58a98877cd9599ca623559cb6f8d598d8065096002864b6596a
          • MD5 SHA1 SHA512 TLSH

          bdicon.ico

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\images\common\systray\bdicon.ico
          • Size 310KB
          • SHA256 d4ad680b92451ed53e4dbc6a978f8eb3f33a0a11adf9e0f1a1d816271dd83935
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bitdefender_logo.svg

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\images_2\common\bitdefender_logo.svg
          • Size 3KB
          • SHA256 e9022044a73b0332e686decd07ea3847127597d385b1adef86a8685acabf8cf6
          • MD5 SHA1 SHA512 TLSH

          close_hover.svg

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\images_2\common\close_hover.svg
          • Size 557B
          • SHA256 875880ec72cd8645b6c21bb479250c6e1244e6d950cce959ed8e449cfe03ebd5
          • MD5 SHA1 SHA512 TLSH

          load_medium.png

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\images_2\common\load_medium.png
          • Size 49KB
          • SHA256 58f92552f323d24233ff477b7788069699de9746c0efe702f71816d9cbac09eb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          minimize_hover.svg

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\images_2\common\minimize_hover.svg
          • Size 486B
          • SHA256 c569ab8d023b87bae27d330b5d54ecbac5543b1bd8b81f6335d8619f87638fa1
          • MD5 SHA1 SHA512 TLSH

          icon-warn.svg

          • Path C:\Program Files\Bitdefender Agent\27.1.1.50\skin\img\icons\icon-warn.svg
          • Size 1KB
          • SHA256 ca401acc7e0a98b7f28fc648f97cca10539433c8e3c59574d4a90903615da58f
          • MD5 SHA1 SHA512 TLSH

          bdredline.bdch.json

          • Path C:\Program Files\Bitdefender Agent\redline\bdredline.bdch.json
          • Size 942B
          • SHA256 3d211fe9c9e6c048c5e71c0f01e5354db6ad3964dbb4c83e1ae4bd317267672f
          • MD5 SHA1 SHA512 TLSH

          bdredline.conf

          • Path C:\Program Files\Bitdefender Agent\redline\bdredline.conf
          • Size 358B
          • SHA256 8ee5c38703a82ad615abe3adc6d3b47d05032e374ef38084f2b323a7b4f823e0
          • MD5 SHA1 SHA512 TLSH

          version.json

          • Path C:\Program Files\Bitdefender Agent\version.json
          • Size 42B
          • SHA256 85ee2682766ddea103784b0039d7857cc1b1801f94677e679fc45f69c464e26e
          • MD5 SHA1 SHA512

          agent_launcher.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\agent_launcher.exe
          • Size 249KB
          • SHA256 144cadead0541912843d47aed7d88d7fdda43e49641bd6e8e0df5c0c8ca1b39a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          bddeploy.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bddeploy.exe
          • Size 406KB
          • SHA256 c77afa25bbaf58dbb5669eb31ecbdf4f415996023eb64de6c89b71f08476787e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          deploy.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\deploy.dll
          • Size 20KB
          • SHA256 ac364daac06ed770cca271fbfeef32536b3ff97ab93c978a3730e7d8b59684f5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          additional.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\additional.dll
          • Size 1.6MB
          • SHA256 667d7dec51178bb488f10f31cd91d5c2b8002a54de70d235b2fc6799a5469b2a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          agentpackage.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\agentpackage.exe
          • Size 15.5MB
          • SHA256 c3faaf6ecc1b1efa87655218867e75a8e95b473692b5a9e354f4d33d25a4e202
          • MD5 SHA1 SHA512 SSDEEP TLSH

          agentpackage.exe.md5

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\agentpackage.exe.md5
          • Size 32B
          • SHA256 7bb9576095488b145a7e74e3b5ee6f7f7a0502622197cabac0da23d24931e8e9
          • MD5 SHA1 SHA512

          bdnc.json

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\bdnc.json
          • Size 154B
          • SHA256 fbd4d9075feb0e2678a9c9df0dc2860c4468968c176876cb0271ca8676347aa6
          • MD5 SHA1 SHA512 TLSH

          bdredline.bdch.json

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\bdredline.bdch.json
          • Size 730B
          • SHA256 a773cf585925921309cc117e59ee87c56ae7e9f7e7532b4fb153e4ac72dac76e
          • MD5 SHA1 SHA512 TLSH

          bdredline.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\bdredline.exe
          • Size 2.3MB
          • SHA256 0d40b0b31a6356f30b7d62c61f898049dc3b2b3787513f7b3e5e8f572737a3f8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          params.json

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\data\params.json
          • Size 86B
          • SHA256 c9128459dbcebc819dde6ea43d243420497fcf5a10b403cf708299a50e5d35f1
          • MD5 SHA1 SHA512 TLSH

          installer.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\installer.exe
          • Size 823KB
          • SHA256 294cc48535dc58baaef31f72c04d46daad2e18f80671d6936950122b2a946d2f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          en-US.txtui

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\lang\en-US.txtui
          • Size 10KB
          • SHA256 1868b43eab031374a3a65d6b82d853cd2371ed9ad6e043cdb53780baf3cc80b3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          resources.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\lang\ltr\resources.dll
          • Size 113KB
          • SHA256 9b8b309f05e7bd50c17cf499a8816c295d98f238dd263de007a082fdfadc4d3c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          productagentdp.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\productagentdp.dll
          • Size 619KB
          • SHA256 279233367d5cf36b6bf6885bc36ab26b9916a7026ff73e2c2b2b1201b94bfc02
          • MD5 SHA1 SHA512 SSDEEP TLSH

          sciter.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\sciter.dll
          • Size 4.6MB
          • SHA256 553fee2011e12543e5998467e8f692138d0c1f96aafb7cc1d691b0e65da1bf9f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          setuppackage.exe

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\setuppackage.exe
          • Size 6.2MB
          • SHA256 cf831e8f44a9ed4c0148013100137076d33b8f04e8cf024189ee414093d150aa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          setuppackage.exe.md5

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\setuppackage.exe.md5
          • Size 32B
          • SHA256 0cfc1861c7ba3c64b746744cc79bec0eaf0731a7283d0dd28e3bc001d52aca15
          • MD5 SHA1 SHA512

          unrar.dll

          • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\packages\unrar.dll
          • Size 278KB
          • SHA256 4065f8df7710a9bb2c192df67ef033baa6fa743c59425ef3d00f69c4cd570a52
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/1140-542-0x000000006DE50000-0x000000006DE60000-memory.dmp

          memory/2044-570-0x000000006DE50000-0x000000006DE60000-memory.dmp

          memory/5984-569-0x000000006DE50000-0x000000006DE60000-memory.dmp