General

  • Target

    05112024_0115_EE85716273�pdf.vbs.zip

  • Size

    8KB

  • Sample

    241105-bmfs9stncq

  • MD5

    bdab866d9f4a8a483b192078b8fe6284

  • SHA1

    453663ac88aa7dc0c0f9c6a8669dc0885bfd07e5

  • SHA256

    229b7b535ad988d6608f0122024724354fb1235dcc7cf280170e0ab4155fa739

  • SHA512

    9d1343456b2a4b4460b5f385a0974abe0a0283921eaf2eb44d6b54d7cb0025ba1a1ac5a61dd83257ecbcee6748d1cb6f227217957ce25c776c7036a2a54c472d

  • SSDEEP

    192:G7jnnIw/O4oJtNDOGutPEX4LRy+tKo9bPg2mVvn7F2mcz:GPnv/gT/u68Ry4KoVG7F2jz

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

ris4sts8yan0i.duckdns.org:23458

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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-LAZAF7

  • 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

      EE85716273·pdf.vbs

    • Size

      15KB

    • MD5

      dd2dbf4aaf7ccc943b82dda51afc985e

    • SHA1

      61a75176fefa4be72f5978319116722396a0e919

    • SHA256

      f592c9039e109241cbfd30ae6b0ec2c1098b10ca1dfa80eb427edea6564265f5

    • SHA512

      bcaaeeb59703067a86e59d94323f20347ca047c54658baf2dd4f50101a089b63407de4654138ed6dcf46a664cac0f5724322d9db86e4167d1e61b09db4a97f32

    • SSDEEP

      384:9b7o6mutReVkQRfjj+3auNjYKv5QN+pBcXg:ds6muSfe3auhYKuMpB7

    • Remcos

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

    • Remcos family

    • UAC bypass

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Blocklisted process makes network request

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

    • Legitimate hosting services abused for malware hosting/C2

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks