Analysis

  • max time kernel
    92s
  • max time network
    124s
  • 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 03:38

General

  • Target

    4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe

  • Size

    411KB

  • MD5

    ab82eeb4d0bfc29e266388cc4c2d372b

  • SHA1

    836976baba2cba88f4a4c1238b22a466dbebea4a

  • SHA256

    4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4

  • SHA512

    987b8634a5ac0fc6234ee10b5b437bff3450e6f473afcfa2c17c41df6d2241765e8813076a699aaa22bd58a00493b4d7b9008b5a96b1c12fe82120c1983605d1

  • SSDEEP

    12288:JetLagza/unbxptENWXkVTTM5ct0bDMT:JettMMbxpSNMk12c20T

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\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe
    "C:\Users\Admin\AppData\Local\Temp\4fced8f23e19e90f89d110b6dc75f76edac9624fc3aa99f793a249a4e76a8ed4.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:3840
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 296
      2⤵
      • Program crash
      PID:4324
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3840 -ip 3840
    1⤵
      PID:4556

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • memory/3840-0-0x000000000093B000-0x00000000009CE000-memory.dmp

      Filesize

      588KB

    • memory/3840-1-0x00000000008D0000-0x00000000009CE000-memory.dmp

      Filesize

      1016KB

    • memory/3840-2-0x000000000093B000-0x00000000009CE000-memory.dmp

      Filesize

      588KB

    • memory/3840-3-0x00000000008D0000-0x00000000009CE000-memory.dmp

      Filesize

      1016KB