Overview

overview

10

Static

static

3

b82f9e8db8...e0.exe

windows10-2004-x64

10

b82f9e8db8...e0.exe

windows11-ltsc_2024-x64

10

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

Sharing

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General

  • Target
    b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe
  • Size 359KB
  • Sample260801-dtr6zsch37
  • SHA256 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
guloaderremcosremotehostdiscoverydownloaderrat

Malware Config

Extracted

Family

  • remcos

Version

  • 7.2.5 Pro

Botnet

  • RemoteHost

C2

  • 107.175.148.68:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-S7EK0D

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target
      b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0.exe
    • Size 359KB
    • SHA256 b82f9e8db8498f52fe986a31acc6ec7ba2de38c4c7a1aa69f043f577497d87e0
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    remotehostdiscoverydownloaderguloaderremcosrat

    • Family: Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Family: Remcos

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

      ratremcos

    • Loads dropped DLL

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2
    • Target
      $PLUGINSDIR/System.dll
    • Size 11KB
    • SHA256 f004c568d305cd95edbd704166fcd2849d395b595dff814bcc2012693527ac37
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3behavioral4

MITRE ATT&CK Enterprise v16

Tasks