Analysis

  • max time kernel
    90s
  • max time network
    92s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2024, 15:35

General

  • Target

    eb5ec3b7d5e40e7e5ac48e35aa92e95c2cedde328d1363122c72e4b637764327N.exe

  • Size

    640KB

  • MD5

    9d750dc7d494f5a04cc82c91a0cfe110

  • SHA1

    3954f855a79773eb2b4b7a6acf4d32b23d1350a1

  • SHA256

    eb5ec3b7d5e40e7e5ac48e35aa92e95c2cedde328d1363122c72e4b637764327

  • SHA512

    8073525c7440e3e1e8a21967102869c2e2b898a5bc59bcc0e73983df0ae627795e05d6d3c43ee9ef8b04366a4317b57209744a48f07dc56202b7be17e7b1db87

  • SSDEEP

    12288:8SvoAT6AV0E7BAmEjCtLwwsv+KKhlz/HjrGoSf7FHfMdHnBjvrEH7p:8SZmAtTFwFM/xSxfMBlrEH7p

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
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 6 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 4 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eb5ec3b7d5e40e7e5ac48e35aa92e95c2cedde328d1363122c72e4b637764327N.exe
    "C:\Users\Admin\AppData\Local\Temp\eb5ec3b7d5e40e7e5ac48e35aa92e95c2cedde328d1363122c72e4b637764327N.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:4216
    • \??\c:\21ac5aecb396e72459d6\update\update.exe
      c:\21ac5aecb396e72459d6\update\update.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:2588

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\21ac5aecb396e72459d6\_sfx_.dll

    Filesize

    25KB

    MD5

    ee207e35aea4d5df41d90221e1b66efa

    SHA1

    757469cf9ad2f21f267bbe730560114fdf8a89a5

    SHA256

    cf64c95e9a2d02967efc22b00efb3736156b913a95231eb63c1df45d43475e64

    SHA512

    43e9f75725daa4f3428b2d9cee2c2cc8b2f2e991b8e58d72d2f429fbdfb614c86d172f03d3f9da98756bd4e245643d9a57c6efa422d6c60ad364a2322245542d

  • C:\21ac5aecb396e72459d6\update\UPDSPAPI.dll.tmp

    Filesize

    413KB

    MD5

    89130afce2de7da19fc8239d990baa01

    SHA1

    e340fa4ba5ac6e4de48a91d66505963370acb3e2

    SHA256

    62c881860f557fc61bcd2f274558ad41279640209968cdd305225455587e472a

    SHA512

    c74faa57e46c63b5776b90bc2a2a77e8ebd717ddac75d80031da13b162ad3df40246757363a57ca5f67e97f02ed0d336cd40af3a05c800b9699ce08c229004ce

  • C:\21ac5aecb396e72459d6\update\update.exe

    Filesize

    683KB

    MD5

    e265f4549a137e02dd049102ec73f8da

    SHA1

    9ef4c6208913b66670b19662845024b144511e55

    SHA256

    c870e6680683cefffb7f7ecad848ab956099095bdf8ae7a68055384407d8d6ee

    SHA512

    9f2da8efd2677a99e2484e6d2734bb320beceed8a482d95e99fea1fd21b52bc9818526ce4ed90dbc288b2da6ba2accf09af8bb75ed73fece89025727513f9ee4

  • C:\21ac5aecb396e72459d6\update\updspapi.dll

    Filesize

    337KB

    MD5

    50166a8cac712edf084573eb0de57a30

    SHA1

    424cd652fa5db27d789f17c9473448c1e96a38ec

    SHA256

    c78fb1c4310b660659c749a6f9e04b6a1aca80579d9120ddbff9a909369347a1

    SHA512

    b5d73d75102ebd420b2a0e640b6b3d44b0d67820ac3e2b1d4941f6bc5e8672e2a179dabe9fc189c605ca236665f1dbb94b033acb8fe25414a534bd3620bbeaf8

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/2588-50-0x0000000000A30000-0x0000000000A86000-memory.dmp

    Filesize

    344KB

  • memory/2588-66-0x0000000000A30000-0x0000000000A86000-memory.dmp

    Filesize

    344KB

  • memory/2588-69-0x0000000000A30000-0x0000000000A86000-memory.dmp

    Filesize

    344KB

  • memory/4216-4-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4216-6-0x0000000001005000-0x0000000001006000-memory.dmp

    Filesize

    4KB

  • memory/4216-64-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4216-74-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB