Analysis

  • max time kernel
    91s
  • max time network
    138s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc.exe
    "C:\Users\Admin\AppData\Local\Temp\49743c2e8e3d1ff87eb95d633804f3e215a344323699085096b5e832b3ae55dc.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:64
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 64 -s 400
      2⤵
      • Program crash
      PID:2636
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 64 -ip 64
    1⤵
      PID:2416

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/64-0-0x0000000000B4C000-0x0000000000BDF000-memory.dmp

      Filesize

      588KB

    • memory/64-1-0x0000000000AD0000-0x0000000000BDF000-memory.dmp

      Filesize

      1.1MB

    • memory/64-2-0x0000000000B4C000-0x0000000000BDF000-memory.dmp

      Filesize

      588KB