Overview

overview

10

Static

static

1

Virescent.vbs

windows10-2004-x64

10

Virescent.vbs

windows11-21h2-x64

10

Sharing

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General

  • Target
    Virescent.vbs
  • Size 50KB
  • Sample260616-devcsshy3j
  • SHA256 b32425dba354fb2ab5c58d17d2cdde3b3a85105f009dfc48ec02beb2bc4056a4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
remcosremotehostcollectiondiscoveryrat

Malware Config

Extracted

Family

  • remcos

Botnet

  • RemoteHost

C2

  • 31.57.216.56:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-1E0LSY

  • 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
      Virescent.vbs
    • Size 50KB
    • SHA256 b32425dba354fb2ab5c58d17d2cdde3b3a85105f009dfc48ec02beb2bc4056a4
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    remotehostcollectiondiscoveryremcosrat

    • Family: Remcos

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

      ratremcos

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook profiles

      collection

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks