General

  • Target

    23a637d35dee17d4d74a34d981ba4b20N.exe

  • Size

    2.1MB

  • Sample

    240822-e9cxnsyfld

  • MD5

    23a637d35dee17d4d74a34d981ba4b20

  • SHA1

    1eecd058bfd3e66f7badb648587595b21daaf951

  • SHA256

    04d46b9dfee3e14a714ff011856eee2abeeeb7c6cbe042dacd9996d3af861adc

  • SHA512

    c47890eedac4ccaf39d3d0eabf5590796f37576448e3841b309553ae2bb0acdfdc7afef2d98117f0458df4e59ce8bcf639f7752f3e88d74b201b7ebd91f5eac7

  • SSDEEP

    24576:cD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJtL:cp7E+QrFUBgq2SnP

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      23a637d35dee17d4d74a34d981ba4b20N.exe

    • Size

      2.1MB

    • MD5

      23a637d35dee17d4d74a34d981ba4b20

    • SHA1

      1eecd058bfd3e66f7badb648587595b21daaf951

    • SHA256

      04d46b9dfee3e14a714ff011856eee2abeeeb7c6cbe042dacd9996d3af861adc

    • SHA512

      c47890eedac4ccaf39d3d0eabf5590796f37576448e3841b309553ae2bb0acdfdc7afef2d98117f0458df4e59ce8bcf639f7752f3e88d74b201b7ebd91f5eac7

    • SSDEEP

      24576:cD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4avnXJtL:cp7E+QrFUBgq2SnP

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks