Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/09/2024, 12:38

General

  • Target
    85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe
  • Size 1.9MB
  • Sample240913-pvb2ya1gqa
  • SHA256 85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • UPX packed file 6 IoCs

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

  • 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 Program Files directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe
    "C:\Users\Admin\AppData\Local\Temp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3664
    • C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe
      "C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4356

Network

        MITRE ATT&CK Enterprise v15

        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

        symsrv.dll.000

        • Path C:\Program Files\Common Files\System\symsrv.dll.000
        • Size 175B
        • SHA256 eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1
        • MD5 SHA1 SHA512

        85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe

        • Path C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe
        • Size 1.6MB
        • SHA256 acf5e22c4b1a98dc889fe2ad25626ea6fb8cce66edf1c2a4773ad4742f71203c
        • MD5 SHA1 SHA512 SSDEEP

        85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\jds240625359.tmp\85c2bc15f52bcba4ed42a78119d414c2b526454c8bdab938dafb3ebf75391e25.exe.tmp
        • Size 1.6MB
        • SHA256 d53647421fa607a7132d60c6dd880c16b1b6ab0d9449461a3fb27ce33aa1c82a
        • MD5 SHA1 SHA512 SSDEEP

        jusched.log

        • Path C:\Users\Admin\AppData\Local\Temp\jusched.log
        • Size 165KB
        • SHA256 0cdb38c36e76d8baf48a652526ecef26ed443c0f01a14ed6f4c7cd9fe70d93ec
        • MD5 SHA1 SHA512 SSDEEP

        jusched.log

        • Path C:\Users\Admin\AppData\Local\Temp\jusched.log
        • Size 164KB
        • SHA256 27f75a3e5be38217530fea7f918b0c84556362ecb8b976d70924d8494aa4aa39
        • MD5 SHA1 SHA512 SSDEEP

        memory/3664-2-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/3664-125-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/3664-126-0x0000000000D00000-0x0000000000ECF000-memory.dmp

        memory/3664-134-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/3664-6-0x0000000000D01000-0x0000000000D02000-memory.dmp

        memory/3664-141-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/3664-159-0x0000000010000000-0x0000000010030000-memory.dmp

        memory/4356-128-0x0000000000C90000-0x0000000000E25000-memory.dmp