General

  • Target

    1afaba7255b072d5b5459d784a332cefe16f39b880ae5544f546cb95f1220dca

  • Size

    1.1MB

  • Sample

    241126-za62pavmbj

  • MD5

    be53f22f667f5cad38dfdc078260b795

  • SHA1

    2c71d39f61d00a0c2e73c6221c6a5e9ec8fdbd01

  • SHA256

    1afaba7255b072d5b5459d784a332cefe16f39b880ae5544f546cb95f1220dca

  • SHA512

    3b5664e3983833608c316576270787b9ba7ebf6cc6f5640719e7b6a9ba4aafd4f9352a89ddd473dbf4a0cb467fe2e57676dfb784dcf7c10fab02ac35f38acc94

  • SSDEEP

    24576:OeXB1m0LifI3DB8nv4Ieje3ZMLyHZIA4Nm5EDCIc78cO4:Oo1m0L+RwHjkUfAum5EDCTgc

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

172.93.189.76:2404

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • 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

    true

  • install_flag

    true

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-4EQLNI

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      1afaba7255b072d5b5459d784a332cefe16f39b880ae5544f546cb95f1220dca

    • Size

      1.1MB

    • MD5

      be53f22f667f5cad38dfdc078260b795

    • SHA1

      2c71d39f61d00a0c2e73c6221c6a5e9ec8fdbd01

    • SHA256

      1afaba7255b072d5b5459d784a332cefe16f39b880ae5544f546cb95f1220dca

    • SHA512

      3b5664e3983833608c316576270787b9ba7ebf6cc6f5640719e7b6a9ba4aafd4f9352a89ddd473dbf4a0cb467fe2e57676dfb784dcf7c10fab02ac35f38acc94

    • SSDEEP

      24576:OeXB1m0LifI3DB8nv4Ieje3ZMLyHZIA4Nm5EDCIc78cO4:Oo1m0L+RwHjkUfAum5EDCTgc

    • Remcos

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

    • Remcos family

    • UAC bypass

    • 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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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