Analysis

  • max time kernel
    78s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-12-2024 07:23

General

  • Target

    2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia.exe

  • Size

    1.8MB

  • MD5

    606fc82a05ab359478f5a56646e20d5c

  • SHA1

    227d27d9852b4c19d9fc075b04fc2e320e0d4eca

  • SHA256

    470383cc055f7e510c6ce10cffc206116ba4f79e165c0701038fa6d2cb14d78b

  • SHA512

    b5314b1af7776f21706adfc9fdb185a8fac0c1528a71f29ea37a88a928d25be502147176a88964cf723405a632349cb3dacdd92bdde7db994eec7f451a3afb43

  • SSDEEP

    49152:BppJgw14kZV2HXsMnmjEREseBSsxHnfXsrHYi2Yijix:rwYJYn

Malware Config

Signatures

  • Floxif family
  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • Drops file in Drivers directory 1 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 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • UPX packed file 7 IoCs

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

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

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

  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia.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:1560
    • C:\Users\Admin\AppData\Local\Temp\2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia64.exe
      C:\Users\Admin\AppData\Local\Temp\2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia.exe
      2⤵
      • Drops file in Drivers directory
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3228
      • C:\Windows\System32\Notepad.exe
        Notepad.exe C:\Users\Admin\Desktop\Rkill.txt
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:3168

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Common Files\System\symsrv.dll

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • C:\Program Files\Common Files\System\symsrv.dll.000

    Filesize

    175B

    MD5

    1130c911bf5db4b8f7cf9b6f4b457623

    SHA1

    48e734c4bc1a8b5399bff4954e54b268bde9d54c

    SHA256

    eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

    SHA512

    94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

  • C:\Users\Admin\AppData\Local\Temp\2024-12-21_606fc82a05ab359478f5a56646e20d5c_floxif_mafia64.exe

    Filesize

    964KB

    MD5

    ae368c10327fe7a8e5c875360e529b35

    SHA1

    d69fad67631f48f2eee9109a368eb176356da531

    SHA256

    797f0917162e74e64f556fd467cc13d10401e826309c3ed889574889a96b88c7

    SHA512

    e7e6e4d29dfdc537b21fdffc6c1ac0674b55fdf6c61e5fecfbdde1fa271903db1291c50bac3263bc9f4ee7797689542f29770e0d98b8180453c39bc6058a5c67

  • C:\Users\Admin\Desktop\Rkill.txt

    Filesize

    514B

    MD5

    4748e8bc20393b0eba2ec46550720d40

    SHA1

    2d2938d66d1365f918464d147ef5fc0c33051c1d

    SHA256

    ecf35b01f5e6db3d1b766d8cb67d1280c9318ea7285b233f2c5fcf6c2f298826

    SHA512

    5d0394f15efeeff0c2b60e8870f91789f3e310f354dc45137f89aa77afefe645d22ebdb5ab7f319b52c554f8f37bf4d74f19ce92d5408f341e58a253fe02492c

  • C:\Users\Admin\Desktop\Rkill.txt

    Filesize

    3KB

    MD5

    0a3253bf542f3dd2866464fb6bda4d3a

    SHA1

    ed1877aa34acef688ebd52d78a7f3deefe40bfb7

    SHA256

    c52193f075448ef3b1e27828dc8929c3fc0c4fc02d909453700343975d9d3c16

    SHA512

    7ecd9208f4ebd8147c2bfdc47f9ce4c6bd950bbbf2b48f8dabd6c6f0946265d8ec038528f44be3495f539ecb6939754cdbd67c42273d81db775746cc16de9298

  • memory/1560-5-0x0000000000261000-0x0000000000262000-memory.dmp

    Filesize

    4KB

  • memory/1560-20-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-21-0x0000000000260000-0x000000000041F000-memory.dmp

    Filesize

    1.7MB

  • memory/1560-24-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-28-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-34-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-39-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1560-37-0x0000000000260000-0x000000000041F000-memory.dmp

    Filesize

    1.7MB