General

  • Target

    5113448d51807a38a76525708683448e742c5461ab21b14b7b4b5682acd627dd

  • Size

    470KB

  • Sample

    240710-vzzlpasgka

  • MD5

    bd960a153b84571d576d5dd4c48f09ba

  • SHA1

    4e70aed54595067ec69661201247d8664811f710

  • SHA256

    5113448d51807a38a76525708683448e742c5461ab21b14b7b4b5682acd627dd

  • SHA512

    c1958b33e77d05e684c966322f21ed5f24c7816d7c9815849649fdeeb697743704eb79ca135c205fdc6088b3cff80821beb373faa1ee49f2965dca9b3ffd98b9

  • SSDEEP

    12288:R0NwzIoEluDKUIqqUXeVeLm8pNisAhU3Bbg:fzIoEluWUXeVeLmfsA6RM

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

a458386d9.duckdns.org:3256

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

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-7CSH4D

  • 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

      5113448d51807a38a76525708683448e742c5461ab21b14b7b4b5682acd627dd

    • Size

      470KB

    • MD5

      bd960a153b84571d576d5dd4c48f09ba

    • SHA1

      4e70aed54595067ec69661201247d8664811f710

    • SHA256

      5113448d51807a38a76525708683448e742c5461ab21b14b7b4b5682acd627dd

    • SHA512

      c1958b33e77d05e684c966322f21ed5f24c7816d7c9815849649fdeeb697743704eb79ca135c205fdc6088b3cff80821beb373faa1ee49f2965dca9b3ffd98b9

    • SSDEEP

      12288:R0NwzIoEluDKUIqqUXeVeLm8pNisAhU3Bbg:fzIoEluWUXeVeLmfsA6RM

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

    • Remcos

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

    • UAC bypass

    • NirSoft MailPassView

      Password recovery tool for various email clients

    • NirSoft WebBrowserPassView

      Password recovery tool for various web browsers

    • Nirsoft

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • 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

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks