General

  • Target

    Request for quotation.exe

  • Size

    1.2MB

  • Sample

    240724-hlye9awelf

  • MD5

    de12c9cd706f1745fed49a0bd86a2d0c

  • SHA1

    7e0e46e675a61dc5807915139904d2fb742f5d32

  • SHA256

    f7f46b7ae3a2502c6489735c6d92a400617704cd12440e2015f3e50834af0d42

  • SHA512

    93d143630d0c9e7fbcb152f15264c573c788d24894fed2176124e08833b835f15557d7d02a853fd424b04cc8fc2fcfa3649f942fcab7681f380189cc38a940f8

  • SSDEEP

    24576:LjWx3xQdd8fdq8EvCW+RSZhD445cr8VWO5g3EVL:LKVyL8fC+8XD445mY5g3EVL

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:52121

officerem.duckdns.org:52121

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-UNX1LL

  • 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

      Request for quotation.exe

    • Size

      1.2MB

    • MD5

      de12c9cd706f1745fed49a0bd86a2d0c

    • SHA1

      7e0e46e675a61dc5807915139904d2fb742f5d32

    • SHA256

      f7f46b7ae3a2502c6489735c6d92a400617704cd12440e2015f3e50834af0d42

    • SHA512

      93d143630d0c9e7fbcb152f15264c573c788d24894fed2176124e08833b835f15557d7d02a853fd424b04cc8fc2fcfa3649f942fcab7681f380189cc38a940f8

    • SSDEEP

      24576:LjWx3xQdd8fdq8EvCW+RSZhD445cr8VWO5g3EVL:LKVyL8fC+8XD445mY5g3EVL

    • 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

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks