General

  • Target

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe

  • Size

    998KB

  • Sample

    240823-c6qm9a1erb

  • MD5

    2732e2eb4efa4972d94d993a31a67f44

  • SHA1

    60e02e1d0f4f002532f7ea2fc24adaf80db430bd

  • SHA256

    c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

  • SHA512

    159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

  • SSDEEP

    24576:4ALYnT2KsbNqGuYsqf3hfGwuvMSNMTosRap+EyT:4xT9oqVq5fPcMS/tp+F

Malware Config

Extracted

Family

remcos

Botnet

CLIENT

C2

64.188.18.85:2404

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    xlorers.exe

  • copy_folder

    xlorers

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-GK0LTU

  • 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

      c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24.exe

    • Size

      998KB

    • MD5

      2732e2eb4efa4972d94d993a31a67f44

    • SHA1

      60e02e1d0f4f002532f7ea2fc24adaf80db430bd

    • SHA256

      c733793c396f98ec7eccf793a4ecb71c1af71b6106d202afe28df463d5a60a24

    • SHA512

      159dcaae380279a2a68280c75d4a6fc53a9c79a846cfd31a42e250922e815e1e665faeb4ca017ecdc375439b2abdf98e62baaffead599db23e488adf4e792531

    • SSDEEP

      24576:4ALYnT2KsbNqGuYsqf3hfGwuvMSNMTosRap+EyT:4xT9oqVq5fPcMS/tp+F

    • 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

    • Command and Scripting Interpreter: PowerShell

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

    • Checks computer location settings

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

    • 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

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks