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Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231020-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2023, 14:51

General

  • Target

    jurojarem2.1.exe

  • Size

    572KB

  • MD5

    0a1d0f4a278dff187347c1544ab3dc6a

  • SHA1

    765e25fcbbdb651ae743dede4a50f10cc672e915

  • SHA256

    9ef9b4a8ab8366ea77b049febf61fd2003aa90b9b38f5c301bff8a60a0feef24

  • SHA512

    4aba1511baf640947fe77d15c44e27b28bd8d1eb18c8e2136228630910384902ba891cf630ad39fa3a4893196c3490d109722f8fd292447516b364292ed5b385

  • SSDEEP

    12288:HVzaqD3kmx8ROJVT7WPBL4lbeItG74jdzGa0oiN/uucM/9:1zNDv8kJ57W2lb/GQGv5

Malware Config

Extracted

Family

remcos

Botnet

jujufile

C2

sheddy1122.ddns.net:6524

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-YCH6KL

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jurojarem2.1.exe
    "C:\Users\Admin\AppData\Local\Temp\jurojarem2.1.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1936
    • C:\Users\Admin\AppData\Local\Temp\nrcrae.exe
      "C:\Users\Admin\AppData\Local\Temp\nrcrae.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1448
      • C:\Users\Admin\AppData\Local\Temp\nrcrae.exe
        "C:\Users\Admin\AppData\Local\Temp\nrcrae.exe"
        3⤵
        • Executes dropped EXE
        PID:4092

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nrcrae.exe

    Filesize

    191KB

    MD5

    ee99fc55b29a46169f0540aeb0bca165

    SHA1

    01a548e1c1f25ef3fc9bb0b9de385e9c36282033

    SHA256

    7f5b232d44fbdd08ebbc844ca1fd85896a87e3597b03ca0a6f92ccaa4f0a8ef3

    SHA512

    57cb9b568a4513fdff5e1cf85922bf481b4d4b6f95e8f0a38f4a053e5b6a9c34da7156df230e08e39f2cbf09bb610599a75c4c9624455e56136f015e793c0daf

  • C:\Users\Admin\AppData\Local\Temp\nrcrae.exe

    Filesize

    191KB

    MD5

    ee99fc55b29a46169f0540aeb0bca165

    SHA1

    01a548e1c1f25ef3fc9bb0b9de385e9c36282033

    SHA256

    7f5b232d44fbdd08ebbc844ca1fd85896a87e3597b03ca0a6f92ccaa4f0a8ef3

    SHA512

    57cb9b568a4513fdff5e1cf85922bf481b4d4b6f95e8f0a38f4a053e5b6a9c34da7156df230e08e39f2cbf09bb610599a75c4c9624455e56136f015e793c0daf

  • C:\Users\Admin\AppData\Local\Temp\nrcrae.exe

    Filesize

    191KB

    MD5

    ee99fc55b29a46169f0540aeb0bca165

    SHA1

    01a548e1c1f25ef3fc9bb0b9de385e9c36282033

    SHA256

    7f5b232d44fbdd08ebbc844ca1fd85896a87e3597b03ca0a6f92ccaa4f0a8ef3

    SHA512

    57cb9b568a4513fdff5e1cf85922bf481b4d4b6f95e8f0a38f4a053e5b6a9c34da7156df230e08e39f2cbf09bb610599a75c4c9624455e56136f015e793c0daf

  • C:\Users\Admin\AppData\Local\Temp\wmexolwodq.pd

    Filesize

    503KB

    MD5

    5ea8e75765169d06ea196ff8199f776f

    SHA1

    4ed58a9bab8b37909c4e56cc5c436d685cc5cd5e

    SHA256

    fbfa13ab9d91adbadf4080bbdd528deaae39a252a2da31e29415db9372657436

    SHA512

    a03d986037667d41c0413aacf1ee0fa70e240d9e652da73a633b02d2f78d1f6ffcb3b554c173398f769890489106015938f0687ea34eb723200b7bb678e3409f

  • memory/1448-5-0x00000000006E0000-0x00000000006E3000-memory.dmp

    Filesize

    12KB

  • memory/4092-8-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-10-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-11-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-12-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-13-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-14-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-15-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-16-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-17-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-18-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-19-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-20-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-21-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-22-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-23-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-24-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-25-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-26-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-27-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-28-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-29-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-30-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-31-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-32-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-33-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-34-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-36-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-37-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-38-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-39-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-40-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-41-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-42-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-43-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-44-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-45-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-46-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-47-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-48-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-49-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-50-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-51-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-52-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-53-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-54-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-55-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-56-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-57-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-58-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-59-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-60-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-61-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-62-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-63-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-64-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-65-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-66-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-67-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-68-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-69-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-70-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-71-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-72-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB

  • memory/4092-73-0x0000000000400000-0x0000000000482000-memory.dmp

    Filesize

    520KB