Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/08/2022, 01:16

General

  • Target
    Szpxxznwosquqelpmqhxnhklckexxbrzlg.exe
  • Size 969KB
  • Sample220817-bmsstsgefm
  • SHA256 2fe6e7ac5c699248c6f80259e23782d718bea739b0687a91e949cbdf486a4abf
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • remcos

Botnet
  • noguts

C2
  • hustlehard.ddns.net:4670

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

    Remcos-U89MGT

  • 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

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • 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\Szpxxznwosquqelpmqhxnhklckexxbrzlg.exe
    "C:\Users\Admin\AppData\Local\Temp\Szpxxznwosquqelpmqhxnhklckexxbrzlg.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\SysWOW64\calc.exe
      "C:\Windows\System32\calc.exe"
      2⤵
        PID:532

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/532-220-0x0000000050590000-0x000000005060E000-memory.dmp

          memory/532-221-0x0000000002260000-0x00000000022DB000-memory.dmp

          memory/532-222-0x0000000002260000-0x00000000022DB000-memory.dmp