Analysis

  • max time kernel
    94s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-12-2024 11:11

General

  • Target

    fb4fb518905944d8d40f97c13a1a5578_JaffaCakes118.exe

  • Size

    2.5MB

  • MD5

    fb4fb518905944d8d40f97c13a1a5578

  • SHA1

    87791ebc36c32c5623dae7e32c375d39cb7abcd3

  • SHA256

    50915f0f6260856a025536f2e78c82d605e522d7051600545ab94f887bf4cfc5

  • SHA512

    07dd64fbe898dd173f19b93d29876e0ea294bdfda2d4a15e4366efbf5b15a967f1fed48860e51f1fb49d8183486c38b18ec797f21dba5e280b9bb0818ce12aee

  • SSDEEP

    49152:t848Edrt/PRv5ytQzhEP8aebD0KkslOcSDnYrPg3CvH7QDAYDvzs/3ffwva+f:t26p/phyueP8aebDQiOcSYzgx7zifZ+f

Score
10/10

Malware Config

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Remcos family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fb4fb518905944d8d40f97c13a1a5578_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\fb4fb518905944d8d40f97c13a1a5578_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4084
    • C:\Users\Admin\AppData\Local\Temp\remcos_a.vmp.exe
      "C:\Users\Admin\AppData\Local\Temp\remcos_a.vmp.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2968

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\remcos_a.vmp.exe

    Filesize

    923KB

    MD5

    f3314fc93173aa9f577d660772740ec2

    SHA1

    2a40e34b13dce2c06047e510d61cb8074d30e683

    SHA256

    be495cf2dcb879d5e867a0b744cf040ab55a4338a18c1f6a012c2450d5a57799

    SHA512

    decb8a5b77a1fedad692013e6ef3608094baba5e0b9d71cba7faafddeb8707dfddd524ef6639c57deb0cfc9254b63077bfae9de0c66fc7b599070b50dd35369a

  • memory/2968-11-0x0000000000467000-0x0000000000576000-memory.dmp

    Filesize

    1.1MB

  • memory/2968-12-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB

  • memory/2968-13-0x0000000000467000-0x0000000000576000-memory.dmp

    Filesize

    1.1MB

  • memory/2968-14-0x0000000000400000-0x000000000065E000-memory.dmp

    Filesize

    2.4MB