Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-12-2024 17:31

General

  • Target

    2024-12-23_63daf9ce70bf83999b5ee3a29f1a0f1a_floxif_icedid.exe

  • Size

    3.9MB

  • MD5

    63daf9ce70bf83999b5ee3a29f1a0f1a

  • SHA1

    d9b9a95b04b1eeb97190786b4283782dd70cacc5

  • SHA256

    d226436494389ca6451e3beb6e670f0b2d7b01ed15fe884912895cd367f25a86

  • SHA512

    6b83d081aa3a41c7c9842bcb49461121da670988085f6a7efc1bfa9c6ce68a31e5c133f9753247f70e7c03c50033bdd5c90292fe071c1d46fc682f5e8100682a

  • SSDEEP

    49152:3PCtrQVG+mgo57IX55RdXvTFmpItLc8aOm7s+TgoW:3SQJxX55R6427hTgn

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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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.

  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • UPX packed file 8 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-23_63daf9ce70bf83999b5ee3a29f1a0f1a_floxif_icedid.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-23_63daf9ce70bf83999b5ee3a29f1a0f1a_floxif_icedid.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4860
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Windows\temp\cpuz_driver_4860.log
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:2104

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

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:\Windows\Temp\cpuz_driver_4860.log

    Filesize

    1KB

    MD5

    f512c1982bf6633ed0ea167e2342d48f

    SHA1

    c9a88f1cc9d1f01ea98af452eec619801dc4ef31

    SHA256

    c6c9135c7299314aaab1079f924d96569d2d93298dbc8d4663cf9efd33775650

    SHA512

    d71e808ea39cb28c7d6b4a2d015d49de9ed77aab8ab06d29494d65aa3c5cda895546647e0bc696eb8b413b656edc31fd48d2940d28598141f93ce8d5c58a0ce8

  • C:\Windows\temp\cpuz_driver_4860.log

    Filesize

    2KB

    MD5

    fd7eebd8258b18335205c36dd2efe6b3

    SHA1

    02d727f937c83f9e00127dd1947b64d0534d49f8

    SHA256

    d68c005d7eeb23122670faf2ec335a5e656e611ce88d18f5bc867e800449d236

    SHA512

    05a021f91614f7e429d5269b2fd6ce97954b313d5f862413cd7d944220dae898f8e69432157e2d935f159dad67560b23d995735bf02fe2b267e771c3da3af5ae

  • memory/4860-71-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-72-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-58-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-54-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-61-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-62-0x0000000077165000-0x0000000077166000-memory.dmp

    Filesize

    4KB

  • memory/4860-53-0x0000000077165000-0x0000000077166000-memory.dmp

    Filesize

    4KB

  • memory/4860-57-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-75-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-76-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-79-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-82-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-88-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/4860-94-0x0000000077150000-0x00000000771B3000-memory.dmp

    Filesize

    396KB

  • memory/4860-96-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB