General

  • Target

    Duplicated.xlsx

  • Size

    1.2MB

  • Sample

    210603-822qfz6hp6

  • MD5

    c3b92604182c4023868c7284cd93fe19

  • SHA1

    4f2cdd9771452f97fa7b4ff73bc537939df10af2

  • SHA256

    6031a48b46df7f0f0902658301276bd0f5f0cb61f0a5c07bd28d7a6805f0c5fa

  • SHA512

    944cb402b903aee07e4e165e9a052d9cad60de9d6cde6278b7b811de53f8b3b23df378379b67df0e1175ad3db7bc286feb53619bc5da0072a63dd67bdb787419

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

HostUniversal

C2

bressonseencrounder.mangospot.net:1984

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    Office

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    revsr_bwssxphqkv

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

Extracted

Family

warzonerat

C2

seencroundercontroller.webredirect.org:1894

Extracted

Family

nanocore

Version

1.2.2.0

C2

multipleentry90dayscontroller.homingbeacon.net:54980

universalchampionis.zapto.org:54980

Mutex

44548f7d-2f32-414e-b70b-1138f528266a

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    universalchampionis.zapto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-03-09T23:47:26.614623836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54980

  • default_group

    Basi@Manager

  • enable_debug_mode

    true

  • gc_threshold

    1.048576e+07

  • keep_alive_timeout

    30000

  • keyboard_logging

    false

  • lan_timeout

    2500

  • max_packet_size

    1.048576e+07

  • mutex

    44548f7d-2f32-414e-b70b-1138f528266a

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    multipleentry90dayscontroller.homingbeacon.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Targets

    • Target

      Duplicated.xlsx

    • Size

      1.2MB

    • MD5

      c3b92604182c4023868c7284cd93fe19

    • SHA1

      4f2cdd9771452f97fa7b4ff73bc537939df10af2

    • SHA256

      6031a48b46df7f0f0902658301276bd0f5f0cb61f0a5c07bd28d7a6805f0c5fa

    • SHA512

      944cb402b903aee07e4e165e9a052d9cad60de9d6cde6278b7b811de53f8b3b23df378379b67df0e1175ad3db7bc286feb53619bc5da0072a63dd67bdb787419

    • Imminent RAT

      Remote-access trojan based on Imminent Monitor remote admin software.

    • NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Remcos

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

    • WarzoneRat, AveMaria

      WarzoneRat is a native RAT developed in C++ with multiple plugins sold as a MaaS.

    • Warzone RAT Payload

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Drops startup file

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Uses the VBS compiler for execution

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks