Analysis

  • max time kernel
    136s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-08-2024 01:26

General

  • Target

    b173b03e0988654a331c46e31e2438115d34fc57a7550a66aee784d1e74300d3.exe

  • Size

    476KB

  • MD5

    5d9afa34d58d686ea27ab01f4f681d56

  • SHA1

    4301075acafdd765528e91950c6a89b96889d97c

  • SHA256

    b173b03e0988654a331c46e31e2438115d34fc57a7550a66aee784d1e74300d3

  • SHA512

    7912d1190a6d440d906c7cd908ff03d95187b894f469fc1cda0dcf985e61b74e376cd41e39fdac582e438f1c10e4be63c53e1943986943081b97cc99c72a2934

  • SSDEEP

    12288:yYmIjE7eNdKcWEb92Ubr4TgyUbZm6qCs8e/G:O7eNAYb92Ub8T5geL

Malware Config

Signatures

  • Expiro, m0yv

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

  • Expiro payload 4 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\b173b03e0988654a331c46e31e2438115d34fc57a7550a66aee784d1e74300d3.exe
    "C:\Users\Admin\AppData\Local\Temp\b173b03e0988654a331c46e31e2438115d34fc57a7550a66aee784d1e74300d3.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:3112
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3112 -s 532
      2⤵
      • Program crash
      PID:4076
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3112 -ip 3112
    1⤵
      PID:2976

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3112-0-0x0000000000B2B000-0x0000000000BBF000-memory.dmp

      Filesize

      592KB

    • memory/3112-1-0x0000000000AB0000-0x0000000000BBF000-memory.dmp

      Filesize

      1.1MB

    • memory/3112-2-0x0000000000B2B000-0x0000000000BBF000-memory.dmp

      Filesize

      592KB

    • memory/3112-3-0x0000000000AB0000-0x0000000000BBF000-memory.dmp

      Filesize

      1.1MB