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Overview

overview

10

Static

static

1

7caf68c894...ac.exe

windows7-x64

10

7caf68c894...ac.exe

windows10-2004-x64

10

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General

  • Target

    7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac

  • Size

    910KB

  • Sample

    250323-yw247axnz3

  • MD5

    a24a1bbd8b0ce4737d179c924afc6e77

  • SHA1

    40cd5db7d8a1d1c37ee23f90a363bc00dc36ee2a

  • SHA256

    7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac

  • SHA512

    f283a6c54bdf6f5a3a1ece5d90ea64cbc9586f3015dd03bfe0a0fd8966c54bd7f91ab00ce3cc49acc33c9642d99d36943a11c2d0819aa583ec8236cf956e1e91

  • SSDEEP

    12288:kp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9M7:kpugRNJI1D39dlfGQrFUx9M7

Score
10/10
remcoshostdiscoverypersistenceratspywarestealer

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

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

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family

remcos

Botnet

Host

C2

213.183.58.19:4000

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

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac

    • Size

      910KB

    • MD5

      a24a1bbd8b0ce4737d179c924afc6e77

    • SHA1

      40cd5db7d8a1d1c37ee23f90a363bc00dc36ee2a

    • SHA256

      7caf68c89471c61128dc496052deb1bdc26b0a5c98218975cbd76545e483aaac

    • SHA512

      f283a6c54bdf6f5a3a1ece5d90ea64cbc9586f3015dd03bfe0a0fd8966c54bd7f91ab00ce3cc49acc33c9642d99d36943a11c2d0819aa583ec8236cf956e1e91

    • SSDEEP

      12288:kp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9M7:kpugRNJI1D39dlfGQrFUx9M7

    Score
    10/10
    remcoshostdiscoverypersistenceratspywarestealer

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks