Overview

overview

10

Static

static

PostNL kla...oc.exe

windows7_x64

10

PostNL kla...oc.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    97e5f9b35e1063aeb38fab2b2f808ed777604138a7ca2772b040110fffe20a72

  • Size

    316KB

  • Sample

    220521-cype8ahgdq

  • MD5

    ce528994e3ef90ec050a630d700863cd

  • SHA1

    134874f93ee1856a2ec74912fd070b3429a45f00

  • SHA256

    97e5f9b35e1063aeb38fab2b2f808ed777604138a7ca2772b040110fffe20a72

  • SHA512

    f801efeb07ab664e16c948d2ff9536bed8d12631e84f9bc8254d7bad6bfc9ebf80d032ddff3ed810a49515d11331d0ed5256cec6956e9e3a9c29e98f85b83e9c

Score
10/10
nanocoreevasionkeyloggerspywarestealersuricatatrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

postnl.duckdns.org:1969

127.0.0.1:1969
Mutex

03803fb4-9846-4772-b30e-fac43bb55ddb

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-27T07:08:14.039616336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1969

  • default_group

    POSTNL

  • 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

    03803fb4-9846-4772-b30e-fac43bb55ddb

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    postnl.duckdns.org

  • 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

      PostNL klant verzendinformatie document doc.exe

    • Size

      500KB

    • MD5

      96197942f6e4fb122810a1188781d9a1

    • SHA1

      a19f727211c5120a482af60dfca7042f181f5e3a

    • SHA256

      04d57be00e1edddcfd5cd6088b4eec44591c6f0a5f9e6a13b9f90e66a24ccc25

    • SHA512

      4c4ab690187abfa8b68641dbe02038d91ec56a9898a69a65709cea7d86cc984df9ef1f7d6658d7f3b0fecd3931bccdf14d828ee09b50b54cb32105a32009f45d

    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