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Analysis

  • max time kernel
    95s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/01/2025, 04:48

General

  • Target

    JaffaCakes118_8c2873d511977594add09a4e60531bd8.exe

  • Size

    415KB

  • MD5

    8c2873d511977594add09a4e60531bd8

  • SHA1

    9ebbc576a8fe3cba13f018a0197a74c7b438b72d

  • SHA256

    375f5c82edbfd1930a62db083b22f000a688673f21ba27d45687c0da8f54087d

  • SHA512

    871137e10534b8c2f2c2d8f22b5747ab53e37b66553135d40c848c12574bf7827cdc6fe79dfc6f412482ef06ada6aa10f0ba1cbb73a8e93bdaf8606eedd9566c

  • SSDEEP

    6144:ldMUjQEJDsL8FK8cIF/mibypbcHVvZ9g+V2z5IY1ZOSA5w0eX1uIm4:4uzoliVubcZP365I+Zgw0g1T

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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c2873d511977594add09a4e60531bd8.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8c2873d511977594add09a4e60531bd8.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:3516
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3516 -s 256
      2⤵
      • Program crash
      PID:1004
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 200 -p 3516 -ip 3516
    1⤵
      PID:916

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • memory/3516-0-0x000000000049B000-0x000000000052E000-memory.dmp

      Filesize

      588KB

    • memory/3516-1-0x0000000000430000-0x000000000052E000-memory.dmp

      Filesize

      1016KB

    • memory/3516-2-0x000000000049B000-0x000000000052E000-memory.dmp

      Filesize

      588KB

    • memory/3516-3-0x0000000000430000-0x000000000052E000-memory.dmp

      Filesize

      1016KB