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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    10/01/2025, 18:21

General

  • Target

    JaffaCakes118_eae9019d1976bfa42ce219392a42e98b.exe

  • Size

    484KB

  • MD5

    eae9019d1976bfa42ce219392a42e98b

  • SHA1

    35eba58c2422aa11b5d4554c824ca92947f8f950

  • SHA256

    4f098737a0b13e9129123e1fa03e34a8473421fe818282fe8e58ca6749dce747

  • SHA512

    aac6d4a587465dbc88f424f4846f38b0e7e7212effa5634f43c542ee9bf2892a6f791139db5071dfaf76964934a380cbcd0d613c9a0c81827fdd3be02f1daab2

  • SSDEEP

    6144:p2V8qKt/zG0/E3bg3mh9QPghD4fyR9ZIyUc5CokFiokBwVpvh9BBXRCl:p2V6GFGmIYSq5RD5CoF+vG

Malware Config

Signatures

  • Expiro family
  • 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.

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eae9019d1976bfa42ce219392a42e98b.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eae9019d1976bfa42ce219392a42e98b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2092
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2092 -s 132
      2⤵
      • Program crash
      PID:2056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2092-0-0x000000000034D000-0x00000000003E0000-memory.dmp

    Filesize

    588KB

  • memory/2092-1-0x00000000002D0000-0x00000000003E0000-memory.dmp

    Filesize

    1.1MB

  • memory/2092-2-0x000000000034D000-0x00000000003E0000-memory.dmp

    Filesize

    588KB

  • memory/2092-3-0x00000000002D0000-0x00000000003E0000-memory.dmp

    Filesize

    1.1MB