General

  • Target

    Document#.exe

  • Size

    869KB

  • Sample

    240902-ktwbzawgnl

  • MD5

    4f762156a966f4cd24b41c6fa3dcaa12

  • SHA1

    d7df3aafb76c00928e3dac2db2b5ab9b383f9146

  • SHA256

    dbd18db30b53e23bf5b6385264a66d146164e02fd81d97d47bed98cdb4898f6a

  • SHA512

    3d41498d593df3dfa3c1b84fb9e3859c38a7f6e8bb18f9b25bcbb21f3a71ce52835888628569760dac0b52f1143c0d0b122896a75d45f22e462dc4103bb4638f

  • SSDEEP

    12288:LQQUntE1EKOwtg4WsLsmTk9fLN+cEKPZ/aUfqWARW8coiKEfVr4oeVz6Ao:juC1EKOqg4ZsmTafLUcXZLCrlcos8nq

Malware Config

Extracted

Family

remcos

Botnet

GRACE&SUCCESS

C2

eweo9264gtuiort.duckdns.org:22740

eweo9264gtuiort.duckdns.org:35966

Attributes
  • audio_folder

    MicRecords

  • 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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    great.dat

  • keylog_flag

    false

  • keylog_folder

    great

  • mouse_option

    false

  • mutex

    Rmc-GEOGQB

  • 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

      Document#.exe

    • Size

      869KB

    • MD5

      4f762156a966f4cd24b41c6fa3dcaa12

    • SHA1

      d7df3aafb76c00928e3dac2db2b5ab9b383f9146

    • SHA256

      dbd18db30b53e23bf5b6385264a66d146164e02fd81d97d47bed98cdb4898f6a

    • SHA512

      3d41498d593df3dfa3c1b84fb9e3859c38a7f6e8bb18f9b25bcbb21f3a71ce52835888628569760dac0b52f1143c0d0b122896a75d45f22e462dc4103bb4638f

    • SSDEEP

      12288:LQQUntE1EKOwtg4WsLsmTk9fLN+cEKPZ/aUfqWARW8coiKEfVr4oeVz6Ao:juC1EKOqg4ZsmTafLUcXZLCrlcos8nq

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Remcos

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

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • 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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      cf85183b87314359488b850f9e97a698

    • SHA1

      6b6c790037eec7ebea4d05590359cb4473f19aea

    • SHA256

      3b6a5cb2a3c091814fce297c04fb677f72732fb21615102c62a195fdc2e7dfac

    • SHA512

      fe484b3fc89aeed3a6b71b90b90ea11a787697e56be3077154b6ddc2646850f6c38589ed422ff792e391638a80a778d33f22e891e76b5d65896c6fb4696a2c3b

    • SSDEEP

      96:3IsUxO9udx4qYp7AJb76BykUbQMtHUOA5Iv+RnsrqeXV+d1g2IW9t2c+cEwF9oug:YVL7ikJb76BQUoUm+RnyXVYO2RvHoug

    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks