Analysis

  • max time kernel
    155s
  • max time network
    149s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    15-09-2021 06:52

General

  • Target

    b65daa1dd4d5250dc46988b6ad6f9225.exe

  • Size

    917KB

  • MD5

    b65daa1dd4d5250dc46988b6ad6f9225

  • SHA1

    a5bc36c7ff1d32ef1d375c948ee0796f9bc869ac

  • SHA256

    a8dc7160a7ee97e27a4448c6795e8753db816b528eb8c6cd9ed68f83707d4903

  • SHA512

    d7975cbd3a8f6d297a9906ae8aebaddc1b3f444830d07fa2e8ddf2b10a9e9cef16fc1a4a4a21a24341275eea940775a6ca67ba61ade206e8d4df49e7e2a7bb1d

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

RemoteHost

C2

freelife.hopto.org:2404

freelife1.hopto.org:2404

freelife2.hopto.org:2404

freelife01.hopto.org:2404

freelife3.hopto.org:2404

freelife4.hopto.org:2404

freelife5.hopto.org:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • 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

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    pastananiceforwhat-QQD2AI

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Signatures

  • Remcos

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b65daa1dd4d5250dc46988b6ad6f9225.exe
    "C:\Users\Admin\AppData\Local\Temp\b65daa1dd4d5250dc46988b6ad6f9225.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4720
    • C:\Windows\SysWOW64\dialer.exe
      C:\Windows\System32\dialer.exe
      2⤵
        PID:4840

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/4720-119-0x0000000002230000-0x0000000002231000-memory.dmp
      Filesize

      4KB

    • memory/4840-120-0x0000000000000000-mapping.dmp
    • memory/4840-122-0x0000000000C80000-0x0000000000C81000-memory.dmp
      Filesize

      4KB

    • memory/4840-121-0x00000000009C0000-0x00000000009C1000-memory.dmp
      Filesize

      4KB

    • memory/4840-124-0x0000000010590000-0x000000001060C000-memory.dmp
      Filesize

      496KB

    • memory/4840-123-0x0000000000C50000-0x0000000000C51000-memory.dmp
      Filesize

      4KB

    • memory/4840-125-0x0000000000400000-0x0000000000479000-memory.dmp
      Filesize

      484KB