Overview

overview

10

Static

static

10

rrXcTwCT.exe

windows7-x64

10

rrXcTwCT.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    rrXcTwCT.exe
  • Size 124KB
  • Sample220810-yldnvaecdj
  • SHA256 a0911f69ebcbc93540e63bf007fcab0bbece1a9f55c780ea29fc0a4935e2b93b
  • MD5 SHA1 SHA512
Score
10/10
remcosremotehostevasionpersistencerattrojan

Malware Config

Extracted

Family

  • remcos

Version

  • 2.5.1 Pro

Botnet

  • RemoteHost

C2

  • 67.211.213.207:444

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    srchost.exe

  • copy_folder

    srchost

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%\System32

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    srchost

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    srchost-93R9LI

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    srchost

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Targets

    • Target
      rrXcTwCT.exe
    • Size 124KB
    • SHA256 a0911f69ebcbc93540e63bf007fcab0bbece1a9f55c780ea29fc0a4935e2b93b
    • MD5 SHA1 SHA512
    Score
    10/10
    remcosremotehostevasionpersistencerattrojan

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks