Analysis

  • max time kernel
    11s
  • max time network
    15s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    31-08-2024 06:11

General

  • Target

    4458bf4125bfc990db039e6b488ea69817af9c4627c1af8d7b40d0182bba7da8.exe

  • Size

    7.3MB

  • MD5

    ca29ba90f0ba302e70dcc107cec7cc26

  • SHA1

    f0ba3ffdfaaa741ea197989ca0ab9390fde78f92

  • SHA256

    4458bf4125bfc990db039e6b488ea69817af9c4627c1af8d7b40d0182bba7da8

  • SHA512

    ff177e970837c30e62a9d897b9b5a9d464cc397be2d62b010d7afbba087159d0ef3d7bf50c14812cfd91f847b2f5961019f4e428a59a4fc705bf92c45756b38a

  • SSDEEP

    98304:hxC3ud6MOIvysiwCQKzo5qphIHVruP3WpF3UdE1hZHEdLFCmil+:WGQFMkhgJuP32+dmhZk/g

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.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4458bf4125bfc990db039e6b488ea69817af9c4627c1af8d7b40d0182bba7da8.exe
    "C:\Users\Admin\AppData\Local\Temp\4458bf4125bfc990db039e6b488ea69817af9c4627c1af8d7b40d0182bba7da8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2540
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2540 -s 156
      2⤵
      • Program crash
      PID:1240

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2540-0-0x000000000139E000-0x0000000001431000-memory.dmp

    Filesize

    588KB

  • memory/2540-1-0x0000000000C50000-0x0000000001431000-memory.dmp

    Filesize

    7.9MB

  • memory/2540-2-0x000000000139E000-0x0000000001431000-memory.dmp

    Filesize

    588KB

  • memory/2540-3-0x0000000000C50000-0x0000000001431000-memory.dmp

    Filesize

    7.9MB