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Analysis

  • max time kernel
    118s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2024, 12:02

General

  • Target

    JaffaCakes118_19fc4d5fd0417d431cdb16112c593851.exe

  • Size

    738KB

  • MD5

    19fc4d5fd0417d431cdb16112c593851

  • SHA1

    814dec635ce5d1e55479ca9f81b22236e27e421b

  • SHA256

    e3d380417ff300e5ca62e16e77b3977233df145e8c429a3bbb60eea59e3599b9

  • SHA512

    3242b32c014773ba2ac689ae56fecb42a5bf2707c4fbdeddd3b310201ffb9fe25577977f2b76994615227d052a76fb313d80e1592a3095f3a6fc1397ea23e41e

  • SSDEEP

    12288:CAwSfxL/2Dc3jDLLmt0LDQewsHjhWW1d9cgO0qIlp7+x9xhIS2:HGewsHjoW1d9c0Na98

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_19fc4d5fd0417d431cdb16112c593851.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_19fc4d5fd0417d431cdb16112c593851.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2436
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2436 -s 124
      2⤵
      • Program crash
      PID:2204

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • memory/2436-0-0x0000000000FBF000-0x0000000001052000-memory.dmp

    Filesize

    588KB

  • memory/2436-1-0x0000000000F00000-0x0000000001052000-memory.dmp

    Filesize

    1.3MB

  • memory/2436-2-0x0000000000FBF000-0x0000000001052000-memory.dmp

    Filesize

    588KB

  • memory/2436-3-0x0000000000F00000-0x0000000001052000-memory.dmp

    Filesize

    1.3MB