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Analysis

  • max time kernel
    15s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    16/01/2025, 08:19

General

  • Target

    4d78c92d9702a848a4718cac7d8e70137950fde128e70e1743eade7ddd00b77c.exe

  • Size

    576KB

  • MD5

    f6ac62956c8a5d31deccceec8f0c5e41

  • SHA1

    9e00eb2fc5c31f9000733cf86a2fae5919d8f1f1

  • SHA256

    4d78c92d9702a848a4718cac7d8e70137950fde128e70e1743eade7ddd00b77c

  • SHA512

    f95a74d7cdf8d6cc742a07aa94f039ff18f0a532461846f6bb29c7a35aa7474d72ab38b5c8e2e25781e273e49b50bcdd24c277dcb591924fe75343ae22d77ef7

  • SSDEEP

    12288:TxEDAi++Ryo2LbaHkrd7TkTvvrL+2ZBM8P:3L+RXzkp7iX/VBM8P

Malware Config

Signatures

  • Expiro family
  • Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

  • Expiro payload 1 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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 SetWindowsHookEx 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4d78c92d9702a848a4718cac7d8e70137950fde128e70e1743eade7ddd00b77c.exe
    "C:\Users\Admin\AppData\Local\Temp\4d78c92d9702a848a4718cac7d8e70137950fde128e70e1743eade7ddd00b77c.exe"
    1⤵
    • Enumerates connected drives
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:1568

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/1568-0-0x0000000000400000-0x00000000005AA000-memory.dmp

    Filesize

    1.7MB

  • memory/1568-1-0x0000000000427000-0x0000000000429000-memory.dmp

    Filesize

    8KB

  • memory/1568-2-0x0000000000400000-0x00000000005AA000-memory.dmp

    Filesize

    1.7MB