General

  • Target
    9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6.exe
  • Size 577KB
  • Sample240301-fzpddsdf32
  • SHA256 9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 103.77.243.215:2404

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-SHZ02U

  • 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
      9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6.exe
    • Size 577KB
    • SHA256 9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6
    • MD5 SHA1 SHA512 SSDEEP
    • 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

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • 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

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target
      $PLUGINSDIR/nsExec.dll
    • Size 6KB
    • SHA256 030bcfa82e3bb424835a5fa53a3ff17ab08557d3bbeea4815313036fc4bdafe1
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      Seychelliske/brandbar/Choktilstandens.Max
    • Size 55KB
    • SHA256 ef2884aa50d62da1aae7a8822741cfe349d6a2fbead3af48698b5a75f0984842
    • MD5 SHA1 SHA512 SSDEEP
    Score
    8/10
    • Modifies Installed Components in the registry

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v15

Tasks