Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-12-2024 12:30

General

  • Target

    2024-12-25_987690fecfded5445a5183029584e05d_floxif_smoke-loader.exe

  • Size

    134KB

  • MD5

    987690fecfded5445a5183029584e05d

  • SHA1

    603b14e0603bed157565156067ca9fdbe98ad5a9

  • SHA256

    e8d5c8ff924da84563d5294bd9d14c12794be05a63b204ce2896e9889caedd41

  • SHA512

    ebc84c7fe6b61453f51320ccf648a49b41e46b96042375548a92481c7e35af67820947d761732f114c1bddd48b21e32bba9efc060f67666dd16137b6a6c1c3d7

  • SSDEEP

    3072:9w/3d/GWR7lxqhxPIG7Qe2lQBV+UdE+rECWp7hKOR4EPL:gd/GUZEhL75BV+UdvrEFp7hKORHPL

Malware Config

Extracted

Family

bdaejec

C2

ddos.dnsnb8.net

Signatures

  • Bdaejec

    Bdaejec is a backdoor written in C++.

  • Bdaejec family
  • Detects Bdaejec Backdoor. 1 IoCs

    Bdaejec is backdoor written in C++.

  • Floxif family
  • Floxif, Floodfix

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

  • Detected Nirsoft tools 1 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • Detects Floxif payload 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.

  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 11 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 2 IoCs
  • Suspicious use of FindShellTrayWindow 13 IoCs
  • Suspicious use of SendNotifyMessage 13 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-12-25_987690fecfded5445a5183029584e05d_floxif_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-12-25_987690fecfded5445a5183029584e05d_floxif_smoke-loader.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:2548
    • C:\Users\Admin\AppData\Local\Temp\LobpFI.exe
      C:\Users\Admin\AppData\Local\Temp\LobpFI.exe
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2936
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6a1b0e72.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2672

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:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\0BHOTC3C\k2[1].rar

    Filesize

    4B

    MD5

    d3b07384d113edec49eaa6238ad5ff00

    SHA1

    f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

    SHA256

    b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

    SHA512

    0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

  • C:\Users\Admin\AppData\Local\Temp\6a1b0e72.bat

    Filesize

    187B

    MD5

    df7a15385634017114542a064aacc423

    SHA1

    9fad3bc586587bb730a60b4fabb4e2e9bc35d08f

    SHA256

    63578b71dbd120debd1ce65d9d6bba2fb39a193f154b9c0ec1d5790b70c726da

    SHA512

    198f56607400abbd5d55652e3d3cda848b6f1031563637f30195b1f3fb9c76c19900977afdd055ccc6c6b60ec6594c31fe086a195341a455c4c15e5fdf2cb9b2

  • C:\Users\Admin\AppData\Local\Temp\7ED3303A.exe

    Filesize

    4B

    MD5

    20879c987e2f9a916e578386d499f629

    SHA1

    c7b33ddcc42361fdb847036fc07e880b81935d5d

    SHA256

    9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

    SHA512

    bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

  • C:\Users\Admin\AppData\Local\Temp\LobpFI.exe

    Filesize

    15KB

    MD5

    56b2c3810dba2e939a8bb9fa36d3cf96

    SHA1

    99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

    SHA256

    4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

    SHA512

    27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

  • memory/2548-56-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/2548-6-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2548-80-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2548-9-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/2548-0-0x0000000000400000-0x0000000000420000-memory.dmp

    Filesize

    128KB

  • memory/2548-76-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2548-1-0x000000000041B000-0x000000000041C000-memory.dmp

    Filesize

    4KB

  • memory/2548-68-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2548-63-0x000000000041B000-0x000000000041C000-memory.dmp

    Filesize

    4KB

  • memory/2548-66-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2936-16-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2936-61-0x0000000010000000-0x0000000010030000-memory.dmp

    Filesize

    192KB

  • memory/2936-60-0x0000000000FA0000-0x0000000000FA9000-memory.dmp

    Filesize

    36KB

  • memory/2936-12-0x0000000000FA0000-0x0000000000FA9000-memory.dmp

    Filesize

    36KB