Analysis

  • max time kernel
    135s
  • max time network
    140s
  • 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 12:31

General

  • Target

    a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe

  • Size

    415KB

  • MD5

    f160b4aaad518b10dfc712bc54c37d11

  • SHA1

    e3416bde5791c7f1d362c3df517ccd068b44b21a

  • SHA256

    a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e

  • SHA512

    be0fdb8877f19d39a93ea1903149aba7f42c1a67726134b8d7b65670b8b3a19714703e920f160821c5a85d6a7899b1f9af8d1db4e21e674fb6af2a35b48c4c0a

  • SSDEEP

    6144:rT1oMahvpafezhv/Kf26N/tj9vRuVBhmkCTMU7z0pWL72uRTvBaWL:LaOmzhv/c910cnTMiWUR7BRL

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\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe
    "C:\Users\Admin\AppData\Local\Temp\a79113aac9d7c76351a1d74e3d46cdac44146323496b85bb4150ae10f108453e.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:4560
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4560 -s 260
      2⤵
      • Program crash
      PID:920
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4560 -ip 4560
    1⤵
      PID:4660

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4560-0-0x0000000000F6B000-0x0000000000FFE000-memory.dmp

      Filesize

      588KB

    • memory/4560-1-0x0000000000F00000-0x0000000000FFE000-memory.dmp

      Filesize

      1016KB

    • memory/4560-3-0x0000000000F00000-0x0000000000FFE000-memory.dmp

      Filesize

      1016KB

    • memory/4560-2-0x0000000000F6B000-0x0000000000FFE000-memory.dmp

      Filesize

      588KB