Analysis

  • max time kernel
    93s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-09-2024 16:08

General

  • Target

    4317afbf25f7145ec2e84eee745d09c9f6e8a0973a460892fc4fa76595bfa319.exe

  • Size

    7.3MB

  • MD5

    e1a7b4cbe8e8aabce05747a34ce3a875

  • SHA1

    f31a6ca925f4a040bc29982ffb1cf6f0bc8b0843

  • SHA256

    4317afbf25f7145ec2e84eee745d09c9f6e8a0973a460892fc4fa76595bfa319

  • SHA512

    5db4ecec060dd771b77825106a554a7e91abc4da3431cff39fb4096ddad2309a230d28bf26777cb20d990678f7c21784aa00135057130517998488d9c79e520d

  • SSDEEP

    98304:dxC3ud6MOIvysi7CQKzo5qphIHVruP3WpF3UdE1hZHEdLF00n:SGQgMkhgJuP32+dmhZk/08

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\4317afbf25f7145ec2e84eee745d09c9f6e8a0973a460892fc4fa76595bfa319.exe
    "C:\Users\Admin\AppData\Local\Temp\4317afbf25f7145ec2e84eee745d09c9f6e8a0973a460892fc4fa76595bfa319.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:460
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 460 -s 428
      2⤵
      • Program crash
      PID:3216
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 460 -ip 460
    1⤵
      PID:1492

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/460-0-0x0000000000A4E000-0x0000000000AE1000-memory.dmp

      Filesize

      588KB

    • memory/460-1-0x0000000000300000-0x0000000000AE1000-memory.dmp

      Filesize

      7.9MB

    • memory/460-2-0x0000000000A4E000-0x0000000000AE1000-memory.dmp

      Filesize

      588KB

    • memory/460-3-0x0000000000300000-0x0000000000AE1000-memory.dmp

      Filesize

      7.9MB