General

  • Target

    na.hta

  • Size

    118KB

  • Sample

    241015-pzlryaygrp

  • MD5

    3734b6b1d8a5b84814fa08ce7b1ef6c7

  • SHA1

    b89ece297f8abe5e32931f3589d572f50b5036a8

  • SHA256

    b2c7816147d7816cf870f2088aa7be410616f1b639214904a56e49e580c89580

  • SHA512

    add36444b8322aac9b7300081dd67a7d887427dd1d9d0c71115f1a2f4f9427e88b38b7c2158e715e6200fcc794d529611c9f4ac81c7ff10d86a9c996ac01ef8e

  • SSDEEP

    96:Eam73N7J8BZ7t8BIyEQ2XVVAfUFup/JJ5757N8BnL7i7T:Ea23N7u7nyEQUVA8cb757qL74T

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://raw.githubusercontent.com/CryptersAndToolsOficial/ZIP/refs/heads/main/DetahNote_V.jpg%20

exe.dropper

https://raw.githubusercontent.com/CryptersAndToolsOficial/ZIP/refs/heads/main/DetahNote_V.jpg%20

Extracted

Family

remcos

Botnet

authur

C2

authurremc.duckdns.org:14645

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-7B1J99

  • 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

      na.hta

    • Size

      118KB

    • MD5

      3734b6b1d8a5b84814fa08ce7b1ef6c7

    • SHA1

      b89ece297f8abe5e32931f3589d572f50b5036a8

    • SHA256

      b2c7816147d7816cf870f2088aa7be410616f1b639214904a56e49e580c89580

    • SHA512

      add36444b8322aac9b7300081dd67a7d887427dd1d9d0c71115f1a2f4f9427e88b38b7c2158e715e6200fcc794d529611c9f4ac81c7ff10d86a9c996ac01ef8e

    • SSDEEP

      96:Eam73N7J8BZ7t8BIyEQ2XVVAfUFup/JJ5757N8BnL7i7T:Ea23N7u7nyEQUVA8cb757qL74T

    • 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

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Evasion via Device Credential Deployment

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses Microsoft Outlook accounts

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks