Resubmissions

12/05/2025, 21:57

250512-1tzbmaxrw3

25/04/2025, 20:13

250425-yzes3asnt910

25/04/2025, 14:50

250425-r7qf7syks310

25/04/2025, 14:35

250425-ryf66svsby10

25/04/2025, 14:30

250425-rvmjsaxrw510

24/04/2025, 16:38

250424-t5sjws1rw610

14/04/2025, 07:51

250414-jp1kfssjz910

14/04/2025, 07:46

250414-jl9nyssjt910

08/04/2025, 15:58

250408-tevasswl1810

08/04/2025, 14:19

250408-rm2nqsvqw210

General

  • Target
    archive_61.zip
  • Size 23.2MB
  • Sample250425-rvmjsaxrw5
  • SHA256 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • | nelsontriana980

Botnet
  • Default

C2
  • pctrabajonuevo.casacam.net:6606

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • reftel.ddns.net:54984

  • 127.0.0.1:54984

Mutex
  • 11b132f1-b2d5-4bf6-9166-34aaf514d89a

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-27T18:14:14.261066736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54984

  • default_group

    Default

  • 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

    11b132f1-b2d5-4bf6-9166-34aaf514d89a

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    reftel.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Extracted

Family
  • asyncrat

Version
  • 0.5.7B

Botnet
  • Default

C2
  • mooonskj.ddns.net:5552

Mutex
  • AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family
  • njrat

Version
  • im523

Botnet
  • HacKed

C2
  • holyfuckingshit.zapto.org:1188

Mutex
  • dbaa10daaecc50e5048d51ecb95a01dd

Attributes
  • reg_key

    dbaa10daaecc50e5048d51ecb95a01dd

  • splitter

    |'|'|

Extracted

Family
  • quasar

Version
  • 1.4.1

Botnet
  • Office04

C2
  • 127.0.0.1:4782

Mutex
  • 64815557-7ace-4e24-8254-b4bfa76c68d0

Attributes
  • encryption_key

    4C4CF51A01784F79888EFBAF8D36D0C89B0CFD16

  • install_name

    Client.exe

  • key_salt

    bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Quasar Client Startup

  • subdirectory

    SubDir

Extracted

Family
  • asyncrat

Version
  • 0.4.9G

C2
  • corporation.warzonedns.com:9341

Mutex
  • 480-28105c055659

Attributes
  • delay

    0

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Credentials
  • Protocol

    smtp

  • Host

    smtp.yandex.com

  • Port

    587

  • Password

    Boy12345#

Extracted

Family
  • remcos

Version
  • 1.7 Pro

Botnet
  • Host

C2
  • systemcontrol.ddns.net:45000

  • systemcontrol2.ddns.net:45000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    OfficeUpgrade.exe

  • copy_folder

    OfficeUpgrade

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    Upgrader.dat

  • keylog_flag

    false

  • keylog_folder

    Upgrader

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    req_khauflaoyr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    OfficeUpgrade

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Extracted

Family
  • snakekeylogger

C2
  • https://api.telegram.org/bot7810553983:AAF3uNmTjPchWZALCr5hfHzaUc2KfKr7BrQ/sendMessage?chat_id=8164035448

Targets

    • Target
      f5ae5532f18462594d061ae3bdf732b5.exe
    • Size 2.0MB
    • SHA256 afc02ea81470653fdfdfa402a5a8718a48617cefdfd811e95b9d0350b8bc9910
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Target
      f5cb51ffdb87e6d78da4a60b2a83a2c0.exe
    • Size 271KB
    • SHA256 cc18af46043434e99591546067f4ac5c031656cc3493d80396c4eb461e2d6cc9
    • MD5 SHA1 SHA512 SSDEEP
    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Executes dropped EXE

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Target
      f5ed1274646abc95fd8b87f43adcadbc.exe
    • Size 66KB
    • SHA256 dfc5e3435f8ce62c4ba623753f1e15d0311547b9c0276d34b4736f640be26330
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Target
      f62837f3bc66012b94d74cc471f3d97a.exe
    • Size 625KB
    • SHA256 6831200eb1173e4bf699042b7b2e63e3582490981a55b20671724bb60cb0faa9
    • MD5 SHA1 SHA512 SSDEEP
    • Snake Keylogger

      Keylogger and Infostealer first seen in November 2020.

    • Snake Keylogger payload

    • Snakekeylogger family

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    • Target
      f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b.exe
    • Size 273KB
    • SHA256 f628fa20e85aaf1cc562cfd512392d3d12da2ef70adc31068f1e3d7f2b0a4f3b
    • MD5 SHA1 SHA512 SSDEEP
    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • Target
      f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5.exe
    • Size 373KB
    • SHA256 f640f01e808f31a32d455a827fd646d5faf2a452b47833597990ffe9a6597ac5
    • MD5 SHA1 SHA512 SSDEEP
    • Checks computer location settings

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

    • Executes dropped EXE

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

    • Target
      f66fa3036e662d8f7ccce8795fb8b907.exe
    • Size 154KB
    • SHA256 ada4cebb65e8b8b58ecee2c799394b5bad8fa4ebfd3ee7cf8f88c54b93e91b86
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    • Checks computer location settings

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

    • Executes dropped EXE

    • Target
      f68f044685639be03fd992bcb711c098d22b6d0f0043638768c726bf96049950.exe
    • Size 3.0MB
    • SHA256 f68f044685639be03fd992bcb711c098d22b6d0f0043638768c726bf96049950
    • MD5 SHA1 SHA512 SSDEEP
    Score
    3/10
    • Target
      f6ac1ea5c19284854998f25244a12f25.exe
    • Size 654KB
    • SHA256 10478f3361a6cdb5ce48bf9490ea60505e90ef4f9649973ca35bdcf43af1f4b9
    • MD5 SHA1 SHA512 SSDEEP
    Score
    8/10
    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Executes dropped EXE

    • Suspicious use of SetThreadContext

    • Target
      f6b79788476c3806befcdd2dead8231a.exe
    • Size 506KB
    • SHA256 9c798b5cf50fd400ce59355b91a741ab5ccfcffdaedc50815981fa280f4776a9
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    • Checks computer location settings

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

    • Executes dropped EXE

    • Target
      f6e297800457d823c0597e833d555135.exe
    • Size 78KB
    • SHA256 da2a754ce56ec13af9f429d5dcd20ff88aadc429a1b0a74d68f217f87e31b42f
    • MD5 SHA1 SHA512 SSDEEP
    • MetamorpherRAT

      Metamorpherrat is a hacking tool that has been around for a while since 2013.

    • Metamorpherrat family

    • Checks computer location settings

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

    • Executes dropped EXE

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • Drops file in System32 directory

    • Target
      f721adec82fb8994517719b69e8aa337d4619879e64cbd2fd80fc4e190e22c71.exe
    • Size 859KB
    • SHA256 f721adec82fb8994517719b69e8aa337d4619879e64cbd2fd80fc4e190e22c71
    • MD5 SHA1 SHA512 SSDEEP
    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    • Target
      f736c152b3d1812f1142ed0da99e0ac8.exe
    • Size 5.9MB
    • SHA256 78acaa343a31b3474452e4deb58753f16b72e9ba9ec2f537fd7d7431f699c246
    • MD5 SHA1 SHA512 SSDEEP
    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks whether UAC is enabled

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Target
      f780377dd90d33c8280734d882fc2ac9.exe
    • Size 12KB
    • SHA256 d44c91defb81890cb0045d3a612485a4db65c1f4e52ce405efa453b8a07229e7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    7/10
    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Uses the VBS compiler for execution

    • Target
      f7a96bf0830c5f7513d65086e0f7eb6679565b6ffdc6d1e325ee21303b38fec8.exe
    • Size 16.3MB
    • SHA256 f7a96bf0830c5f7513d65086e0f7eb6679565b6ffdc6d1e325ee21303b38fec8
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      f812ad48d0a6d53611389e30fd8ae9f80a245fe3360b52dc833f6bf7b7b7859b.exe
    • Size 135KB
    • SHA256 f812ad48d0a6d53611389e30fd8ae9f80a245fe3360b52dc833f6bf7b7b7859b
    • MD5 SHA1 SHA512 SSDEEP
    • Remcos

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

    • Remcos family

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks

static1

ratdefaulthackedoffice04dcratquasarasyncratnanocoremafiaware666njrat
Score
10/10

behavioral1

dcratinfostealerrat
Score
10/10

behavioral2

dcratinfostealerrat
Score
10/10

behavioral3

quasardiscoverypersistencespywaretrojan
Score
10/10

behavioral4

quasardiscoverypersistencespywaretrojan
Score
10/10

behavioral5

asyncratdefaultdiscoveryrat
Score
10/10

behavioral6

asyncratdefaultdiscoveryrat
Score
10/10

behavioral7

snakekeyloggerdiscoveryexecutionkeyloggerstealer
Score
10/10

behavioral8

snakekeyloggerdiscoveryexecutionkeyloggerstealer
Score
10/10

behavioral9

asyncratdiscoverypersistencerat
Score
10/10

behavioral10

asyncratdiscoverypersistencerat
Score
10/10

behavioral11

discoverypersistence
Score
7/10

behavioral12

discoverypersistence
Score
7/10

behavioral13

discovery
Score
7/10

behavioral14

discovery
Score
7/10

behavioral15

discovery
Score
3/10

behavioral16

discovery
Score
3/10

behavioral17

execution
Score
8/10

behavioral18

execution
Score
8/10

behavioral19

discovery
Score
7/10

behavioral20

discovery
Score
7/10

behavioral21

metamorpherratdiscoverypersistenceratstealertrojan
Score
10/10

behavioral22

metamorpherratdiscoverypersistenceratstealertrojan
Score
10/10

behavioral23

collectioncredential_accessdiscoverypersistencespywarestealer
Score
10/10

behavioral24

collectioncredential_accessdiscoverypersistencespywarestealer
Score
10/10

behavioral25

dcratdefense_evasionexecutioninfostealerrattrojan
Score
10/10

behavioral26

dcratdefense_evasionexecutioninfostealerrattrojan
Score
10/10

behavioral27

discovery
Score
7/10

behavioral28

discovery
Score
7/10

behavioral29

Score
1/10

behavioral30

Score
1/10

behavioral31

remcoshostdiscoverypersistencerat
Score
10/10

behavioral32

remcoshostdiscoverypersistencerat
Score
10/10