Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    02-09-2024 01:21

General

  • Target

    49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc.exe

  • Size

    482KB

  • MD5

    dc64fb891964a7694201dc450ccc7a4f

  • SHA1

    cb214a7979e99b4445610d2e2064ae90c6146053

  • SHA256

    49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc

  • SHA512

    875cb330fb155b77961f1d8075915764d9effa4bdfbae568feb39d622583552cb5fac8d8ed196f520e8d2b5dbe4d49d7fc23552d71d2eb5c9baa7aaccd5b5362

  • SSDEEP

    6144:wJxMdy+42CUfNDDCLawEBa9CrxJCkOzzxeEpysla4+oybZU+g22zlcUfn/uTHqVw:huEUyHOFeEgslVblDzlcUux8crCcJ

Malware Config

Signatures

  • Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

  • Expiro payload 3 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 WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc.exe
    "C:\Users\Admin\AppData\Local\Temp\49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1924 -s 132
      2⤵
      • Program crash
      PID:2936

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1924-0-0x0000000000D4C000-0x0000000000DDF000-memory.dmp

    Filesize

    588KB

  • memory/1924-1-0x0000000000CD0000-0x0000000000DDF000-memory.dmp

    Filesize

    1.1MB

  • memory/1924-2-0x0000000000D4C000-0x0000000000DDF000-memory.dmp

    Filesize

    588KB