Analysis

  • max time kernel
    146s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-12-2024 01:44

General

  • Target

    2024-12-24_429a424423253deaf609e5afb0cadd88_floxif_icedid.exe

  • Size

    3.8MB

  • MD5

    429a424423253deaf609e5afb0cadd88

  • SHA1

    70080b2de95b97791d48509f8d7b2cc8573d9503

  • SHA256

    d366b377d43b8bdc3dd7cfac715435c2e4828916c64f659bfbff6082ede4311c

  • SHA512

    1e1f98577e5c22f8b182e4abbae9410736a150f5f82f6218ad1169302873764ae3abcf00b95de644862962b2324ae45799964b711245077744069243086f3c5b

  • SSDEEP

    49152:LntpdIiTFe5ToegDeDqT8jpIFLc8aOm7s+mu:LfdIyregDGk27hmu

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 7 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-24_429a424423253deaf609e5afb0cadd88_floxif_icedid.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-24_429a424423253deaf609e5afb0cadd88_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:1964
    • C:\Windows\SysWOW64\NOTEPAD.EXE
      "C:\Windows\system32\NOTEPAD.EXE" C:\Windows\temp\cpuz_driver_1964.log
      2⤵
      • System Location Discovery: System Language Discovery
      • Opens file in notepad (likely ransom note)
      PID:2368

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:\Windows\Temp\cpuz_driver_1964.log

    Filesize

    1KB

    MD5

    2f5ab5ac39b4306a42964b28556f1fae

    SHA1

    1bef93799d01fa6218461f96f92bf3241c072df8

    SHA256

    8bccfbea83de61662ef39a404d8f329443370d9c977eee2205c20ec4cb872757

    SHA512

    1b34712b7e4ebabf30df60614eb847b0dbb7239acb6f6b0ef4c42a8129527c3422095750a97e4b8fb242eff4f1939b9168205a5b83f1ec770869fbf9e76c82bc

  • C:\Windows\temp\cpuz_driver_1964.log

    Filesize

    1KB

    MD5

    b0f1b55b4be77cab082e9d3af06f4715

    SHA1

    18e46c018f878d3e62e60275d0552e755124c719

    SHA256

    e22c98c1ba7f6978e40a95f410ddc8bd59cfb7e73fdecb0fdaa2672a1f81dcb8

    SHA512

    e92164feb17935fc27c496b9197cb8e6953a0994d61af53162408360a3da8a0ed8cfb499fe74eb07aa46bc58f027ef8abec705ab4badfdd27d494916dfb00d08

  • memory/1964-40-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1964-35-0x0000000000400000-0x00000000007C0000-memory.dmp

    Filesize

    3.8MB

  • memory/1964-5-0x0000000000544000-0x0000000000547000-memory.dmp

    Filesize

    12KB

  • memory/1964-41-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1964-42-0x0000000000400000-0x00000000007C0000-memory.dmp

    Filesize

    3.8MB

  • memory/1964-51-0x0000000000400000-0x00000000007C0000-memory.dmp

    Filesize

    3.8MB

  • memory/1964-52-0x0000000000400000-0x00000000007C0000-memory.dmp

    Filesize

    3.8MB

  • memory/1964-3-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1964-57-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1964-60-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/1964-66-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB