Overview

overview

10

Static

static

0941a59548...7c.exe

windows7_x64

10

0941a59548...7c.exe

windows10_x64

10

Sharing

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General

  • Target
    0941a59548b4f95082dfa17f85c6557c
  • Size 1.3MB
  • Sample210809-4mvexhlvbe
  • SHA256 b2beeab94f7cbc38143e2a050c263476419bb48d2ec37470df5b1ee0da812f50
  • MD5 SHA1 SHA512
Score
10/10
remcosremotehostevasionpersistenceratspywarestealer

Malware Config

Extracted

Family

  • remcos

Version

  • 3.2.0 Pro

Botnet

  • RemoteHost

C2

  • 45.137.22.101:5888

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-3RVIAE

  • 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;

Targets

    • Target
      0941a59548b4f95082dfa17f85c6557c
    • Size 1.3MB
    • SHA256 b2beeab94f7cbc38143e2a050c263476419bb48d2ec37470df5b1ee0da812f50
    • MD5 SHA1 SHA512
    Score
    10/10
    remcosremotehostevasionpersistenceratspywarestealer

    • Modifies system executable filetype association

      persistence

    • Remcos

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

      ratremcos

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Executes dropped EXE

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • Uses the VBS compiler for execution

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks