Analysis

  • max time kernel
    102s
  • max time network
    104s
  • 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 15:31

General

  • Target

    bc5e8e9b72bf9c30accef0a83e8366d0N.exe

  • Size

    798KB

  • MD5

    bc5e8e9b72bf9c30accef0a83e8366d0

  • SHA1

    baeaf1dbf728ccaa6106be4833c7b604bfad1d2b

  • SHA256

    8a591155989d755b6a72f1f829d2aa1fcc4de8f89dce646cc4cde6ee7304de8b

  • SHA512

    9a7fe252099846fefecc15a9f6d2df33e5cb53917563fda6b7ce0f1c495549becafcfca676e243443ff3b48d8924dbe2c4d3f6b764cef71f985ea21343be9943

  • SSDEEP

    12288:3uypA23ESwGRwg3TBPi7BvmZmKZkxE9LUBB61FNIAhoJDPdRnz:eyy23p+WTBmvUmKZkx3PQIAhkzdRz

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\bc5e8e9b72bf9c30accef0a83e8366d0N.exe
    "C:\Users\Admin\AppData\Local\Temp\bc5e8e9b72bf9c30accef0a83e8366d0N.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4456
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4456 -s 472
      2⤵
      • Program crash
      PID:1416
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4456 -ip 4456
    1⤵
      PID:4148

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • memory/4456-0-0x000000000036D000-0x000000000039E000-memory.dmp

      Filesize

      196KB

    • memory/4456-1-0x00000000002A0000-0x000000000039E000-memory.dmp

      Filesize

      1016KB

    • memory/4456-2-0x000000000036D000-0x000000000039E000-memory.dmp

      Filesize

      196KB