Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    16/08/2026, 06:15

General

  • Target
    2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe
  • Size 4.3MB
  • Sample260816-g1bpcsssd1
  • SHA256 a21c10fbbb933bb17932d13f0720194e3435214eead3a85c6e242c3910ea3841
  • 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) 19 IoCs
  • Event Triggered Execution: AppInit DLLs 1 TTPs

    Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.

  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 8 IoCs
  • Loads dropped DLL 9 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 20 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 6 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 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 behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of SetWindowsHookEx 18 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4196
    • \??\c:\users\admin\appdata\local\temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 
      c:\users\admin\appdata\local\temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1480
      • \??\c:\users\admin\appdata\local\temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 
        c:\users\admin\appdata\local\temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:4120
      • C:\Windows\Resources\Themes\icsys.icn.exe
        C:\Windows\Resources\Themes\icsys.icn.exe
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1064
    • 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 use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4984
      • \??\c:\windows\resources\themes\explorer.exe
        c:\windows\resources\themes\explorer.exe
        3⤵
        • Modifies visibility of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5060
        • \??\c:\windows\resources\spoolsv.exe
          c:\windows\resources\spoolsv.exe SE
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:5920
          • \??\c:\windows\resources\svchost.exe
            c:\windows\resources\svchost.exe
            5⤵
            • Modifies visibility of hidden/system files in Explorer
            • Executes dropped EXE
            • Loads dropped DLL
            • Adds Run key to start application
            • Drops file in System32 directory
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2856
            • \??\c:\windows\resources\spoolsv.exe
              c:\windows\resources\spoolsv.exe PR
              6⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • System Location Discovery: System Language Discovery
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:3244

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        symsrv.dll.000

        • Path C:\PROGRA~1\COMMON~1\System\symsrv.dll.000
        • Size 114B
        • SHA256 aefc503b1ed462d7b6280228a7b5b710792273b78934426f88325341ac5b5a92
        • MD5 SHA1 SHA512 TLSH

        symsrv.dll

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

        2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe.tmp
        • Size 4.4MB
        • SHA256 765638b8098fb7bc387e1b99f935efa078f908f72433d9fcb68d6d423e60b20e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 

        • Path C:\Users\Admin\AppData\Local\Temp\2026-08-16_e4e4c4252bf7b9a657764817ffdea3c3_elex_emotet_floxif_stop_swisyn.exe 
        • Size 4.2MB
        • SHA256 c699a8c90f9642d22e2a78db1ca76cd089c4df46c0d9752dcaf2a98d67775785
        • MD5 SHA1 SHA512 SSDEEP TLSH

        336AE905C8.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\A1D26E2\336AE905C8.tmp
        • Size 4.1MB
        • SHA256 1ebe908b1187d86260d4d0cfb293a063835a604c8a0da50514b10eec423ca8bd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        explorer.exe

        • Path C:\Windows\Resources\Themes\explorer.exe
        • Size 135KB
        • SHA256 8ef2ab6527bf3a1563710aac47d85fe22c0bab586292b71d90d75e023527189b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        icsys.icn.exe

        • Path C:\Windows\Resources\Themes\icsys.icn.exe
        • Size 135KB
        • SHA256 357915d4f531c68d443d116e1564ba18a0c8417075692cafe77a05ad1a8f1e86
        • MD5 SHA1 SHA512 SSDEEP TLSH

        spoolsv.exe

        • Path C:\Windows\Resources\spoolsv.exe
        • Size 135KB
        • SHA256 02b161799b018d0a0dcf28ac53d37135b885401025dce6546684c1cc13ceb593
        • MD5 SHA1 SHA512 SSDEEP TLSH

        svchost.exe

        • Path C:\Windows\Resources\svchost.exe
        • Size 135KB
        • SHA256 e5930314e6c05d0de15b40230620dcc1be94cb9a468acd3d1d212ff42ff25b11
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1064-58-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1064-54-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/1064-59-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/1480-72-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/1480-68-0x0000000003270000-0x000000000328F000-memory.dmp

        memory/1480-67-0x0000000003270000-0x000000000328F000-memory.dmp

        memory/1480-9-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1480-71-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/1480-15-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2856-93-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2856-108-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/2856-131-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/2856-92-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3244-99-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/3244-103-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/3244-104-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4120-52-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4120-53-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4120-31-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4196-109-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4196-0-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/4984-110-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5060-98-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5060-129-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5060-122-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5060-44-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5060-111-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5060-113-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5060-118-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5920-78-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/5920-106-0x0000000000400000-0x000000000041F000-memory.dmp

        memory/5920-107-0x0000000010000000-0x0000000010030000-memory.dmp