Overview

overview

10

Static

static

1

5f5a5e0bee...59.hta

windows7-x64

10

5f5a5e0bee...59.hta

windows10-2004-x64

10

Sharing

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General

  • Target

    5f5a5e0bee42f891a5766a05041909db6981c8e6de0de123cc41196b5089ec59.hta

  • Size

    131KB

  • Sample

    241028-c4czdawkej

  • MD5

    88525e906bbdf8d8c07e66a6fb654a21

  • SHA1

    98cd664d60e4e83e2d51ace6b8e89b4ad2992684

  • SHA256

    5f5a5e0bee42f891a5766a05041909db6981c8e6de0de123cc41196b5089ec59

  • SHA512

    8aeef95955d338c9e78559a40dba58031d09fe7b2048e59f840dcd34f4c23825381b699ef6113975b65b0858d895a8369d6ed7e5d9cd63dfb6a8496799f63730

  • SSDEEP

    96:Eam73NoY+bAFoM+bAbSvGe8DEo1ofB+bA23oqc7T:Ea23SH06T0mQqfs024xT

Score
10/10
remcosremotehostcollectiondefense_evasiondiscoveryexecutionrat

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

exe.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

Extracted

Family

remcos

Botnet

RemoteHost

C2

103.186.116.99:58934

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

    nor

  • keylog_path

    %Temp%

  • mouse_option

    false

  • mutex

    Rmc-IAW1Y3

  • 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

      5f5a5e0bee42f891a5766a05041909db6981c8e6de0de123cc41196b5089ec59.hta

    • Size

      131KB

    • MD5

      88525e906bbdf8d8c07e66a6fb654a21

    • SHA1

      98cd664d60e4e83e2d51ace6b8e89b4ad2992684

    • SHA256

      5f5a5e0bee42f891a5766a05041909db6981c8e6de0de123cc41196b5089ec59

    • SHA512

      8aeef95955d338c9e78559a40dba58031d09fe7b2048e59f840dcd34f4c23825381b699ef6113975b65b0858d895a8369d6ed7e5d9cd63dfb6a8496799f63730

    • SSDEEP

      96:Eam73NoY+bAFoM+bAbSvGe8DEo1ofB+bA23oqc7T:Ea23SH06T0mQqfs024xT

    Score
    10/10
    defense_evasiondiscoveryexecutionremcosremotehostcollectionrat

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • 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.

      execution

    • Evasion via Device Credential Deployment

      defense_evasionexecution

    • Checks computer location settings

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

    • Accesses Microsoft Outlook accounts

      collection

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks