General

  • Target

    7c79a0a702c401e92aa955ac6645577d5543df9f5556c202adb53951c3acbe6a

  • Size

    606KB

  • Sample

    250121-s46vfs1pbm

  • MD5

    2ba976f7e7c9a6fc2964962ec458ea15

  • SHA1

    5d509c5b56fe74330f8fc03ce15db39758aab2cc

  • SHA256

    7c79a0a702c401e92aa955ac6645577d5543df9f5556c202adb53951c3acbe6a

  • SHA512

    b74a253f2103bd68068e42868d34fe291123e73fc37e3675d7477ad683133cb75255cf982b5362cf1f456642158d26be81dc3930f3aff16d82a9c8a7afc4f68d

  • SSDEEP

    12288:/gHApKp8VRCWf29VVAGoTdzzL8blv76cN6x8S5:IUKpARCWf2/oTBLS+O6x8S5

Malware Config

Extracted

Family

remcos

Botnet

googlegroupaccount

C2

213.152.187.241:12776

10.14.10.19:12776

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    googlegroupaccount.exe

  • copy_folder

    googlegroupaccount

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-6741XM

  • 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

      7c79a0a702c401e92aa955ac6645577d5543df9f5556c202adb53951c3acbe6a

    • Size

      606KB

    • MD5

      2ba976f7e7c9a6fc2964962ec458ea15

    • SHA1

      5d509c5b56fe74330f8fc03ce15db39758aab2cc

    • SHA256

      7c79a0a702c401e92aa955ac6645577d5543df9f5556c202adb53951c3acbe6a

    • SHA512

      b74a253f2103bd68068e42868d34fe291123e73fc37e3675d7477ad683133cb75255cf982b5362cf1f456642158d26be81dc3930f3aff16d82a9c8a7afc4f68d

    • SSDEEP

      12288:/gHApKp8VRCWf29VVAGoTdzzL8blv76cN6x8S5:IUKpARCWf2/oTBLS+O6x8S5

    • Remcos

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

    • Remcos family

    • 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