Overview

overview

10

Static

static

3

e04e60efc4...18.exe

windows7-x64

10

e04e60efc4...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e04e60efc406faefb13b0fd319e2251f_JaffaCakes118

  • Size

    632KB

  • Sample

    241211-hkhcmswndm

  • MD5

    e04e60efc406faefb13b0fd319e2251f

  • SHA1

    9e0f221915f81e639a52eeaf76dc96f95ab05e4d

  • SHA256

    61cb3345fb32835c6be148fbcd92812c80cc168affea782936055ff62ca4dd4b

  • SHA512

    07b848691b0976b40411672b98030de36b4f10f1181f248f3150600a336cf3461ba1a2af2484399d2c43faeb5c474146edb206430990ca90f36684444cb77485

  • SSDEEP

    12288:0pacPt3R/dbmXv4k8OIpLaNrv/TFUVo6QyPa+DAB3YWLSiRw3K:K1KXL8hYFv/TmnibBzdp

Score
10/10
asyncratnanocorediscoveryevasionkeyloggerpersistenceratspywarestealertrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.2

C2

sys2021.linkpc.net:6606

Mutex

cd6-c2e0e3fbeef6

Attributes
  • delay

    0

  • install

    true

  • install_file

    notepad.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

nanocore

Version

1.2.2.0

C2

sys2021.linkpc.net:11940

23.94.82.41:11940
Mutex

de7e01ad-963b-4e14-81aa-08dfb351f0fe

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    23.94.82.41

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-04-24T08:14:59.254967636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    11940

  • default_group

    Do

  • 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

    de7e01ad-963b-4e14-81aa-08dfb351f0fe

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    sys2021.linkpc.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • 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

Targets

    • Target

      e04e60efc406faefb13b0fd319e2251f_JaffaCakes118

    • Size

      632KB

    • MD5

      e04e60efc406faefb13b0fd319e2251f

    • SHA1

      9e0f221915f81e639a52eeaf76dc96f95ab05e4d

    • SHA256

      61cb3345fb32835c6be148fbcd92812c80cc168affea782936055ff62ca4dd4b

    • SHA512

      07b848691b0976b40411672b98030de36b4f10f1181f248f3150600a336cf3461ba1a2af2484399d2c43faeb5c474146edb206430990ca90f36684444cb77485

    • SSDEEP

      12288:0pacPt3R/dbmXv4k8OIpLaNrv/TFUVo6QyPa+DAB3YWLSiRw3K:K1KXL8hYFv/TmnibBzdp

    Score
    10/10
    asyncratnanocorediscoveryevasionkeyloggerpersistenceratspywarestealertrojan

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Contains code to disable Windows Defender

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

    • Modifies WinLogon for persistence

      persistence

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • Nanocore family

      nanocore

    • Async RAT payload

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks