General

  • Target

    576-67-0x0000000000400000-0x0000000000417000-memory.dmp

  • Size

    92KB

  • Sample

    230309-kqqbjsae2t

  • MD5

    92a67ceceb9653bb5a8d10999ca01f53

  • SHA1

    cb0ee3e4f078320e62f6fe52e246bc64bab4743c

  • SHA256

    19af4bd362626268a49b289adcb937015a40de31baf3a0ad574ee942e88ab1f7

  • SHA512

    2641cd453150f15f7b82bb2160ab6ba1c5061efeba22f38c4c5930dd8c50d2b15bc35d12c7da519a088f31f1255cb1466e78f0896c7571282e8a9a29e70b9a1f

  • SSDEEP

    1536:ohhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP60rg:uhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+c

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

      576-67-0x0000000000400000-0x0000000000417000-memory.dmp

    • Size

      92KB

    • MD5

      92a67ceceb9653bb5a8d10999ca01f53

    • SHA1

      cb0ee3e4f078320e62f6fe52e246bc64bab4743c

    • SHA256

      19af4bd362626268a49b289adcb937015a40de31baf3a0ad574ee942e88ab1f7

    • SHA512

      2641cd453150f15f7b82bb2160ab6ba1c5061efeba22f38c4c5930dd8c50d2b15bc35d12c7da519a088f31f1255cb1466e78f0896c7571282e8a9a29e70b9a1f

    • SSDEEP

      1536:ohhW0YTGZWdVseJxaM9kraLdV2QkQ1TbPX8IHOCkIsI4ESHNTh9E+JP19qkP60rg:uhzYTGWVvJ8f2v1TbPzuMsIFSHNThy+c

    • Remcos

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

    • UAC bypass

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

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

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Remote System Discovery

1
T1018

Tasks