Overview

overview

10

Static

static

1

4d8b2d19bd...48.bat

windows7-x64

1

4d8b2d19bd...48.bat

windows10-2004-x64

10

Sharing

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General

  • Target

    4d8b2d19bdd29e6d89e0769cff9b0b48.bat

  • Size

    191B

  • Sample

    240925-rb5agsygnp

  • MD5

    4d8b2d19bdd29e6d89e0769cff9b0b48

  • SHA1

    07c4469751a5ddf43288b8ea7d32afce71783a2c

  • SHA256

    1f09edf42fa70f1d36df268eef5b64ea5617485d1a511f674740decfcebdea1e

  • SHA512

    dd00356e9fdf149c9890bf71459a5e20b5bc581d62c7a3964a18aaffb32bd7e5210cc9aa8d6251e87ba4ba3ac803b5e720c66ecf161a546a4d36409d1311d3dc

Score
10/10
remcosback-septemberdiscoveryrat

Malware Config

Extracted

Family

remcos

Botnet

Back-September

C2

fullimmersion777.com:8090

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    hello.exe

  • copy_folder

    windw

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    rimcsl-94LESJ

  • 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

      4d8b2d19bdd29e6d89e0769cff9b0b48.bat

    • Size

      191B

    • MD5

      4d8b2d19bdd29e6d89e0769cff9b0b48

    • SHA1

      07c4469751a5ddf43288b8ea7d32afce71783a2c

    • SHA256

      1f09edf42fa70f1d36df268eef5b64ea5617485d1a511f674740decfcebdea1e

    • SHA512

      dd00356e9fdf149c9890bf71459a5e20b5bc581d62c7a3964a18aaffb32bd7e5210cc9aa8d6251e87ba4ba3ac803b5e720c66ecf161a546a4d36409d1311d3dc

    Score
    10/10
    remcosback-septemberdiscoveryrat

    • Remcos

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

      ratremcos

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks