General

  • Target

    4e5eeb3466f9ff1b02cf89480335e8d746ca6ecaeb658dd43f08eed3ea877c39.bat

  • Size

    6.7MB

  • Sample

    240229-f4hreafc65

  • MD5

    a3508267d7a36e0823f98f3b0c8be53e

  • SHA1

    ad616497393aa64cc82090ff565111531f54921c

  • SHA256

    4e5eeb3466f9ff1b02cf89480335e8d746ca6ecaeb658dd43f08eed3ea877c39

  • SHA512

    a85aea224a0369eedc247fb7ec21f8f50af1dce4ee814196b23e884aa8ca4e0c5358469900eb806bcd0fc59c85a5ad9f03d93f8a3e73320a0b66264cbc4d1d7c

  • SSDEEP

    49152:90Gy6Q/liR7e23oSl2ZKxubTjJvrHEXzUP93pSVVNjrZD07DJZhNzU00UcBuoitX:O

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

127.0.0.1:45671

127.0.0.1:55677

192.3.101.8:55677

192.3.101.8:45671

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-2P1XPK

  • 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

      4e5eeb3466f9ff1b02cf89480335e8d746ca6ecaeb658dd43f08eed3ea877c39.bat

    • Size

      6.7MB

    • MD5

      a3508267d7a36e0823f98f3b0c8be53e

    • SHA1

      ad616497393aa64cc82090ff565111531f54921c

    • SHA256

      4e5eeb3466f9ff1b02cf89480335e8d746ca6ecaeb658dd43f08eed3ea877c39

    • SHA512

      a85aea224a0369eedc247fb7ec21f8f50af1dce4ee814196b23e884aa8ca4e0c5358469900eb806bcd0fc59c85a5ad9f03d93f8a3e73320a0b66264cbc4d1d7c

    • SSDEEP

      49152:90Gy6Q/liR7e23oSl2ZKxubTjJvrHEXzUP93pSVVNjrZD07DJZhNzU00UcBuoitX:O

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

    • Remcos

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

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects executables built or packed with MPress PE compressor

    • Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

    • Detects executables referencing many email and collaboration clients. Observed in information stealers

    • ModiLoader Second Stage

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Creates new service(s)

    • 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