Overview

overview

10

Static

static

Update-200525DOC.exe

windows7_x64

10

Update-200525DOC.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    a94655a1a6d780670884990dfa1cf59d95d719e02f4a7a9737b4969816295f64

  • Size

    300KB

  • Sample

    220521-cttjdahefj

  • MD5

    105fcba6761ec9b988d65c36c5f17ec2

  • SHA1

    38ddf5c2c84ed045105ba40988f0193edfd75022

  • SHA256

    a94655a1a6d780670884990dfa1cf59d95d719e02f4a7a9737b4969816295f64

  • SHA512

    790f954cc50d77a64b3d9bbe8c24c1d192a65d8ac00d27a642f2a5773bf50f0b1e53fd30f7ab5d1b13be64fce9a2723325a05f9c1fbfa3d17d7d5d7dd045382b

Score
10/10
nanocoreevasionkeyloggerspywarestealersuricatatrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

sack517.ddns.net:5656

sack517.duckdns.org:5656
Mutex

c7a8fda1-e948-4efe-8823-4e1fe1d7a7c1

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    sack517.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-03-02T00:28:26.601869136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5656

  • default_group

    SACK

  • 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

    c7a8fda1-e948-4efe-8823-4e1fe1d7a7c1

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    sack517.ddns.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

      Update-200525DOC.exe

    • Size

      353KB

    • MD5

      fb45da8e0aa0fb03696de7498735b56d

    • SHA1

      a4bb2beb734c145ad687138d081ddaf129737387

    • SHA256

      9ebbce05386dc6f05026aeafab2a76868a4e016108b852b8fba849130d4c7c12

    • SHA512

      414236d7613e5b13cf69f3be44ed38eae1c06094af825f870bbb0030dde987d6f5288d776fb9b602eedc104cad8b70ea02b651fb16d704c8a32ade55a328a8b0

    Score
    10/10
    nanocoreevasionkeyloggerspywarestealersuricatatrojan

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • suricata: ET MALWARE Possible NanoCore C2 60B

      suricata: ET MALWARE Possible NanoCore C2 60B

      suricata

    • 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.

    • 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 Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Virtualization/Sandbox Evasion

2
T1497

Credential Access

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks