General

  • Target

    a46173f3115e45f7a55120e49b3a625d5198d1ea0b600a174ad05a27b9d3f92d.vbs

  • Size

    156KB

  • Sample

    240517-b8lawaca57

  • MD5

    8a2a1b975419f7619d9580c2974ecdbc

  • SHA1

    684125ffbbb03a5c1950976f8730d68dd01e5a63

  • SHA256

    a46173f3115e45f7a55120e49b3a625d5198d1ea0b600a174ad05a27b9d3f92d

  • SHA512

    02c6faa7fb9ecfeacc31468766a4ec7697d3a54c3dd0b98d9e0876c1135e468175f2e62a4344210843b9fff8e32068b65119d4a29b871c2414b11426d6dadb22

  • SSDEEP

    1536:ZlGd99CObiFCocEW1aJK66n5yhtW0/5JpWn4ctDg0BhbUZlu9gISsRf:bGdw9JK6X/vcxg0Bhcg

Malware Config

Extracted

Family

remcos

Botnet

Protected

C2

janbours92harbu01.duckdns.org:3980

janbours92harbu01.duckdns.org:3981

janbours92harbu02.duckdns.org:3980

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

    true

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    kajsoiestc.dat

  • keylog_flag

    false

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    aksoiestgb-1YOAXH

  • 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

      a46173f3115e45f7a55120e49b3a625d5198d1ea0b600a174ad05a27b9d3f92d.vbs

    • Size

      156KB

    • MD5

      8a2a1b975419f7619d9580c2974ecdbc

    • SHA1

      684125ffbbb03a5c1950976f8730d68dd01e5a63

    • SHA256

      a46173f3115e45f7a55120e49b3a625d5198d1ea0b600a174ad05a27b9d3f92d

    • SHA512

      02c6faa7fb9ecfeacc31468766a4ec7697d3a54c3dd0b98d9e0876c1135e468175f2e62a4344210843b9fff8e32068b65119d4a29b871c2414b11426d6dadb22

    • SSDEEP

      1536:ZlGd99CObiFCocEW1aJK66n5yhtW0/5JpWn4ctDg0BhbUZlu9gISsRf:bGdw9JK6X/vcxg0Bhcg

    • 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

    • Blocklisted process makes network request

    • 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.

    • Accesses Microsoft Outlook accounts

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks