Overview

overview

10

Static

static

1

bd2cc0d774...9b.exe

windows7-x64

10

bd2cc0d774...9b.exe

windows10-2004-x64

10

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General

  • Target

    bd2cc0d77439897df24dee9a6ee2ef9b.exe

  • Size

    880KB

  • Sample

    230313-mch2esbh6v

  • MD5

    bd2cc0d77439897df24dee9a6ee2ef9b

  • SHA1

    e2da1b80f9b1dc69837a33e70ea00fc29538b8e2

  • SHA256

    35e1a124178c0809f6db117d15e133965b0840ba4adb7f7a30bacc21204c191f

  • SHA512

    b66e4fded3f1a1f4d5d3b2a01a01ca6789907f3701b2d72bb942d69ff31bc271ec1167a24aa6133f4e6cceb4b2b7f2b7a0001a88720f28677136d9f6ba64b9b1

  • SSDEEP

    24576:tUayKWt/Ik4e+hTWWcaVx1RUOFEZbeGV6:tKxIZXhKbgEZbeGV

Score
10/10
remcosupdatemicrosoftevasionpersistencephishingrattrojan

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Update

C2

ytuna1709.duckdns.org:3035

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    Windows Start-Up Audio.exe

  • copy_folder

    Microsoft Start-Up Media

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %WinDir%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Windows Display

  • keylog_path

    %WinDir%

  • mouse_option

    false

  • mutex

    Windows Audio

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Microsoft Sound Endpoint

  • take_screenshot_option

    true

  • take_screenshot_time

    5

  • take_screenshot_title

    Username;password;proforma;invoice;notepad

Targets

    • Target

      bd2cc0d77439897df24dee9a6ee2ef9b.exe

    • Size

      880KB

    • MD5

      bd2cc0d77439897df24dee9a6ee2ef9b

    • SHA1

      e2da1b80f9b1dc69837a33e70ea00fc29538b8e2

    • SHA256

      35e1a124178c0809f6db117d15e133965b0840ba4adb7f7a30bacc21204c191f

    • SHA512

      b66e4fded3f1a1f4d5d3b2a01a01ca6789907f3701b2d72bb942d69ff31bc271ec1167a24aa6133f4e6cceb4b2b7f2b7a0001a88720f28677136d9f6ba64b9b1

    • SSDEEP

      24576:tUayKWt/Ik4e+hTWWcaVx1RUOFEZbeGV6:tKxIZXhKbgEZbeGV

    Score
    10/10
    remcosupdateevasionpersistencerattrojanmicrosoftphishing

    • Remcos

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

      ratremcos

    • UAC bypass

      evasiontrojan

    • 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

    • Detected potential entity reuse from brand microsoft.

      phishingmicrosoft

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

3
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks