Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 01:27

General

  • Target
    2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe
  • Size 390KB
  • Sample261014-bveaeaea64
  • SHA256 6d54419c46fa4df1a171491814d7da87e40046cf1bf5da341b5c45e5f83af7d3
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Modifies visibility of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Detects Floxif payload 1 IoCs
  • UPX dump on OEP (original entry point) 3 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 5 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5136
    • \??\c:\users\admin\appdata\local\temp\2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe 
      c:\users\admin\appdata\local\temp\2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe 
      2⤵
      • Executes dropped EXE
      PID:5008
    • C:\Windows\Resources\Themes\icsys.icn.exe
      C:\Windows\Resources\Themes\icsys.icn.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4124
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visibility of hidden/system files in Explorer
        • Executes dropped EXE
        • Adds Run key to start application
        • Drops file in System32 directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1096
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2644
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visibility of hidden/system files in Explorer
            • Executes dropped EXE
            • Adds Run key to start application
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:5132
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious use of SetWindowsHookEx
              PID:4664

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        symsrv.dll

        • Path C:\Program Files\Common Files\System\symsrv.dll
        • Size 67KB
        • SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe 

        • Path C:\Users\Admin\AppData\Local\Temp\2026-10-13_f27d68238e2d0c1c0c4fd26f5d72ec2b_cobalt-strike_elex_floxif_icedid_luca-stealer_njrat_swisyn_vidar.exe 
        • Size 178KB
        • SHA256 428e86e4e106d6939185e0b0b8b843d4c2e794071436a06dd90719403c49598a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        428D10381410.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\428D10381410.tmp
        • Size 313KB
        • SHA256 01104bf4f94596133885e18c62fff8cc5e0c65d8f390b01eff85b9d135413c25
        • MD5 SHA1 SHA512 SSDEEP TLSH

        explorer.exe

        • Path C:\Windows\Resources\Themes\explorer.exe
        • Size 135KB
        • SHA256 4e63f9727cb8f287905483f2a01b2e4837f83e2ec75b4ff8a04584c450637030
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icsys.icn.exe

        • Path C:\Windows\Resources\Themes\icsys.icn.exe
        • Size 135KB
        • SHA256 5d7cb6381fd82ba61be5bbb827043a048b84f9c5bb5befd1ecaf4f9df1e428b0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        spoolsv.exe

        • Path C:\Windows\Resources\spoolsv.exe
        • Size 135KB
        • SHA256 490cffb83dce077c202e0c9b0e406fbfa6c3164e6cc8d3db0497987a35a864a2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        svchost.exe

        • Path C:\Windows\Resources\svchost.exe
        • Size 135KB
        • SHA256 dc110ce43a2907c0335e324aabaeda7f51c5c4f90a144bdfef466e066e7b2117
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1096-66-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/2644-62-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4124-21-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4124-65-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4664-61-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5132-67-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5136-5-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5136-0-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5136-63-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5136-64-0x0000000000400000-0x000000000041F000-memory.dmp