Analysis

  • max time kernel
    90s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    10/12/2024, 06:39 UTC

General

  • Target

    261ab21d24448a289b5ce13ed9e89facd67b069d4ccd4715f5f3933a11ae2c5b.dll

  • Size

    2.7MB

  • MD5

    ff9b48aa765dd53fa805ab91836c8b20

  • SHA1

    71251c34487a4b687597751503dae82945e589d6

  • SHA256

    261ab21d24448a289b5ce13ed9e89facd67b069d4ccd4715f5f3933a11ae2c5b

  • SHA512

    800dfa27d5ab68cb07c8f20c6c803df220f80971365ed4d91bfd5dff7304e383841519ebe9f68689dc4b3b51190ccd508179a35c7a402e1efb228b8f05a75d81

  • SSDEEP

    49152:FMOYy4DN360WiMj7ivQDfl3qUbgeGIWlE1P9pqid4A9xhCK0QzaSxuYYsXfXWTHA:Foh07qE1P9pzv9xZ0Jlu

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
  • 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.

  • Loads dropped DLL 2 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Program crash 1 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.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\261ab21d24448a289b5ce13ed9e89facd67b069d4ccd4715f5f3933a11ae2c5b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2464
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\261ab21d24448a289b5ce13ed9e89facd67b069d4ccd4715f5f3933a11ae2c5b.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2344
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2344 -s 332
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:2152

Network

  • flag-us
    DNS
    5isohu.com
    Remote address:
    8.8.8.8:53
    Request
    5isohu.com
    IN A
    Response
  • flag-us
    DNS
    www.aieov.com
    Remote address:
    8.8.8.8:53
    Request
    www.aieov.com
    IN A
    Response
    www.aieov.com
    IN A
    45.33.30.197
    www.aieov.com
    IN A
    198.58.118.167
    www.aieov.com
    IN A
    45.79.19.196
    www.aieov.com
    IN A
    72.14.185.43
    www.aieov.com
    IN A
    45.33.2.79
    www.aieov.com
    IN A
    45.56.79.23
    www.aieov.com
    IN A
    45.33.23.183
    www.aieov.com
    IN A
    45.33.20.235
    www.aieov.com
    IN A
    173.255.194.134
    www.aieov.com
    IN A
    45.33.18.44
    www.aieov.com
    IN A
    96.126.123.244
    www.aieov.com
    IN A
    72.14.178.174
  • flag-us
    GET
    http://www.aieov.com/logo.gif
    WerFault.exe
    Remote address:
    45.33.30.197:80
    Request
    GET /logo.gif HTTP/1.1
    Accept: */*
    Host: www.aieov.com
    Response
    HTTP/1.1 403 Forbidden
    server: openresty/1.13.6.1
    date: Tue, 10 Dec 2024 06:39:36 GMT
    content-type: text/html
    content-length: 175
    connection: close
  • 45.33.30.197:80
    http://www.aieov.com/logo.gif
    http
    WerFault.exe
    290 B
    503 B
    5
    4

    HTTP Request

    GET http://www.aieov.com/logo.gif

    HTTP Response

    403
  • 8.8.8.8:53
    5isohu.com
    dns
    56 B
    117 B
    1
    1

    DNS Request

    5isohu.com

  • 8.8.8.8:53
    www.aieov.com
    dns
    59 B
    251 B
    1
    1

    DNS Request

    www.aieov.com

    DNS Response

    45.33.30.197
    198.58.118.167
    45.79.19.196
    72.14.185.43
    45.33.2.79
    45.56.79.23
    45.33.23.183
    45.33.20.235
    173.255.194.134
    45.33.18.44
    96.126.123.244
    72.14.178.174

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    7574cf2c64f35161ab1292e2f532aabf

    SHA1

    14ba3fa927a06224dfe587014299e834def4644f

    SHA256

    de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

    SHA512

    4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

  • memory/2344-3-0x00000000001F0000-0x0000000000220000-memory.dmp

    Filesize

    192KB

  • memory/2344-8-0x00000000001F0000-0x0000000000220000-memory.dmp

    Filesize

    192KB

  • memory/2344-6-0x0000000010000000-0x000000001029D000-memory.dmp

    Filesize

    2.6MB

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