Overview

overview

10

Static

static

3

f4b7c7fd4a...18.exe

windows7-x64

10

f4b7c7fd4a...18.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118
  • Size 873KB
  • Sample240417-bf4azsah21
  • SHA256 0e3d407a6703aa6daac111afc3ef6db70db97cc98bff8b33cc96d97d10a78cdf
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • 185.244.30.63:1916

  • 127.0.0.1:1916

Mutex

  • bce1779d-9a41-430e-abc2-737cf5900556

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-21T21:52:34.187380636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1916

  • default_group

    Nano

  • 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

    bce1779d-9a41-430e-abc2-737cf5900556

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    185.244.30.63

  • 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
      f4b7c7fd4a506534cd052fde285714cb_JaffaCakes118
    • Size 873KB
    • SHA256 0e3d407a6703aa6daac111afc3ef6db70db97cc98bff8b33cc96d97d10a78cdf
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    nanocoreevasionkeyloggerspywarestealertrojan

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • Looks for VirtualBox Guest Additions in registry

      evasion

    • Looks for VMWare Tools registry key

      evasion

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Checks whether UAC is enabled

      evasiontrojan

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks