Overview

overview

10

Static

static

3

3b324a37f1...18.exe

windows7-x64

10

3b324a37f1...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    3b324a37f139d7d4ef82cee02bfb7ab9_JaffaCakes118
  • Size 1.3MB
  • Sample240512-vntlasae63
  • SHA256 b22aa813b223ea1300d79472b45d28bec5eef803fd86598c3f9d2ce2aae30a74
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
remcos3404evasionpersistencerat

Malware Config

Extracted

Family

  • remcos

Botnet

  • 3404

C2

  • 194.40.242.22:3404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    2

  • connect_interval

    15

  • copy_file

    msos.exe

  • copy_folder

    Msos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    MSOS

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    support-9DOJNT

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    msos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      3b324a37f139d7d4ef82cee02bfb7ab9_JaffaCakes118
    • Size 1.3MB
    • SHA256 b22aa813b223ea1300d79472b45d28bec5eef803fd86598c3f9d2ce2aae30a74
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    remcos3404evasionpersistencerat

    • Remcos

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

      ratremcos

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

      evasion

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      evasion

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks