General

  • Target

    PRICE REQUEST RSM PQ24.docx.doc

  • Size

    179KB

  • Sample

    240827-splwqsxbrc

  • MD5

    dddc62fe7387455520e9eb696b4292fd

  • SHA1

    88f4353640f565178c8e4986d8cea7a03b1d14c4

  • SHA256

    2819ddc5b45aec8e553a8ba973a5e555d733dc45f38d3566dc2f0d1e7761ac32

  • SHA512

    e7334d487cd7137a1af8880c31086a9bb59b445ccd91346bc005ce7a5bd0026ab9a2854977463662eab7a148963376245b2917373a890a09ae5898999ebd1661

  • SSDEEP

    3072:aiY5rj1ATug+mhTZMxjcFQ9csn4qAzYjDp/shKuikycBSRjR/Vx7XUwV5h:w5r/g+qZMpcFSQzYHut4dNHh

Malware Config

Extracted

Family

remcos

Botnet

AUG 26

C2

sungito2.ddns.net:6509

154.216.19.222:5532

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

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-LXAZN2

  • 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

      PRICE REQUEST RSM PQ24.docx.doc

    • Size

      179KB

    • MD5

      dddc62fe7387455520e9eb696b4292fd

    • SHA1

      88f4353640f565178c8e4986d8cea7a03b1d14c4

    • SHA256

      2819ddc5b45aec8e553a8ba973a5e555d733dc45f38d3566dc2f0d1e7761ac32

    • SHA512

      e7334d487cd7137a1af8880c31086a9bb59b445ccd91346bc005ce7a5bd0026ab9a2854977463662eab7a148963376245b2917373a890a09ae5898999ebd1661

    • SSDEEP

      3072:aiY5rj1ATug+mhTZMxjcFQ9csn4qAzYjDp/shKuikycBSRjR/Vx7XUwV5h:w5r/g+qZMpcFSQzYHut4dNHh

    • 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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Abuses OpenXML format to download file from external location

    • 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.

    • Accesses Microsoft Outlook accounts

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks