General

  • Target

    Purchase order.tar.gz

  • Size

    658KB

  • Sample

    240724-k6gdks1ekg

  • MD5

    516b934dc77ba6c90c41e15a885ca9cf

  • SHA1

    78333c9f477760539a7869e2cc299588ef92a444

  • SHA256

    41cc38436a40149d849c82847b835bd9c5cd976dd22dfd63db45a7ee85bea6b0

  • SHA512

    bc40117cd39c6338c7d05fde4b74167c419f0e3da7117331faa4fac2652325edbf741e4d9862b3cd520f2517953206052562f0ceed1eb3ec20cd00f1ebdbc1b9

  • SSDEEP

    12288:gIaA9ZiSfXEKmsao7/ZIIdaslHx++mtF1Vz5wmYDo9HgsnH1Dyosf:gIacZBfXEKmsaS/ZIfsltmVAqnH1DyT

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:59321

nnamoo.duckdns.org:59321

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-S35D6F

  • 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

      Purchase order.exe

    • Size

      1.2MB

    • MD5

      c4b7573f2c4f0a5e821a52a54d0bb3ea

    • SHA1

      49ec6d45fcdcfc5bc310552432864fe5d07967b9

    • SHA256

      50cad212d3a943e3c69974119c050fec40d82bfa7ccf94ab28121445138c4f5f

    • SHA512

      88cdd0be3100467ef2d5b2a79c407e3e7fc58a0ede56b46ae2fdbb220bdab06527beca5b28244d0960ed7820964e72ff52705932c9c7dab4df52d535dbaa782b

    • SSDEEP

      24576:LjWx3xQdd8fdq8EvCW+RSZhD445cr8VWO5g3EVB:LKVyL8fC+8XD445mY5g3EVB

    • 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