Overview

overview

10

Static

static

3

c3a763655d...6N.exe

windows7-x64

10

c3a763655d...6N.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    c3a763655dbd277ce4f256c3567fd8523574d848e21181387b3dc047e79f1496N.exe

  • Size

    372KB

  • Sample

    250216-xavbsavra1

  • MD5

    b52779497b912f5b58c9f1713bf7a4e0

  • SHA1

    15842a82d1b7b6a4016d6492e126a1e0379eabcd

  • SHA256

    c3a763655dbd277ce4f256c3567fd8523574d848e21181387b3dc047e79f1496

  • SHA512

    5ae97636030e074d3ce5642e90a4309cae0f36763fbce33b086487afd9dcd0951bfc1af42d69928a83404baf921e5d341cd7e6e670e4d67e0e0fcb4953174dd7

  • SSDEEP

    6144:t8dgUkQx+HXGidCzj8LBb8Rw5Jdypyf6aCXYfhi+:t2qQx+H2i+8LBNbdypazCXY

Score
10/10
remcostinodiscoverypersistencerat

Malware Config

Extracted

Family

remcos

Version

2.4.3 Pro

Botnet

TINo

C2

185.140.53.140:2404

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

    true

  • 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

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-5S9O07

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      c3a763655dbd277ce4f256c3567fd8523574d848e21181387b3dc047e79f1496N.exe

    • Size

      372KB

    • MD5

      b52779497b912f5b58c9f1713bf7a4e0

    • SHA1

      15842a82d1b7b6a4016d6492e126a1e0379eabcd

    • SHA256

      c3a763655dbd277ce4f256c3567fd8523574d848e21181387b3dc047e79f1496

    • SHA512

      5ae97636030e074d3ce5642e90a4309cae0f36763fbce33b086487afd9dcd0951bfc1af42d69928a83404baf921e5d341cd7e6e670e4d67e0e0fcb4953174dd7

    • SSDEEP

      6144:t8dgUkQx+HXGidCzj8LBb8Rw5Jdypyf6aCXYfhi+:t2qQx+H2i+8LBNbdypazCXY

    Score
    10/10
    remcostinodiscoverypersistencerat

    • Modifies WinLogon for persistence

      persistence

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Modifies WinLogon

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks