General

  • Target

    d99f687b6e744e9d9bdff2e59c273c85deff48dbaa52bf2d64009fd5ec4907ab.exe

  • Size

    901KB

  • Sample

    240927-b8v53ssaka

  • MD5

    784b07833fbdca10528dbeb3eb1daffe

  • SHA1

    beee89b885546c0dc98f7931f097f9659bbb8419

  • SHA256

    d99f687b6e744e9d9bdff2e59c273c85deff48dbaa52bf2d64009fd5ec4907ab

  • SHA512

    459916b828fcef6f3eb9aa2e123078a33907281ac47aab71bb3140ce446a6694bdb6347b1dec6678a96368768697a4045bd31b9110b2d87306a011296264dc4b

  • SSDEEP

    24576:pSl++842srFVCeJ8E5WryTL/8bTAWrtCh:pSl++842srfp+EW4oAQtU

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

104.250.180.178:7902

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    Adobe.exe

  • copy_folder

    Adobe

  • 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

    Adobe-OTOIRK

  • 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

      d99f687b6e744e9d9bdff2e59c273c85deff48dbaa52bf2d64009fd5ec4907ab.exe

    • Size

      901KB

    • MD5

      784b07833fbdca10528dbeb3eb1daffe

    • SHA1

      beee89b885546c0dc98f7931f097f9659bbb8419

    • SHA256

      d99f687b6e744e9d9bdff2e59c273c85deff48dbaa52bf2d64009fd5ec4907ab

    • SHA512

      459916b828fcef6f3eb9aa2e123078a33907281ac47aab71bb3140ce446a6694bdb6347b1dec6678a96368768697a4045bd31b9110b2d87306a011296264dc4b

    • SSDEEP

      24576:pSl++842srFVCeJ8E5WryTL/8bTAWrtCh:pSl++842srfp+EW4oAQtU

    • Remcos

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

    • 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

    • 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