Overview

overview

10

Static

static

PO-FRE590164.xlsx

windows7_x64

10

PO-FRE590164.xlsx

windows10_x64

5

Sharing

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General

  • Target

    PO-FRE590164.xlsx

  • Size

    2.2MB

  • Sample

    210126-6ppa19fl4x

  • MD5

    c175f48a4862c49ec69263b5df33a71f

  • SHA1

    e6c98cffb65b0ef3e59020b4f094e0c5123d7f5b

  • SHA256

    42a85a33d440c195bbe8890b74fa396875a33fd6354a4b2c7ca6dfb9516c6e6e

  • SHA512

    52fa94e7f416a2b904685f7fd52bcfe7bf73dccc9c6410e9b1300e4a549a806073605764e8339db74f2b4dda07d11ea001e011aa3a68e7d486a468b1a5557a0c

Score
10/10
nanocoreevasionkeyloggerpersistenceransomwarespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

:4009

127.0.0.1:4009
Mutex

b4dbb526-0da4-4453-8602-b00f5f7a8285

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-06T12:52:22.794043236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4009

  • default_group

    HELP

  • 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

    b4dbb526-0da4-4453-8602-b00f5f7a8285

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • primary_dns_server

    4009

  • 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

      PO-FRE590164.xlsx

    • Size

      2.2MB

    • MD5

      c175f48a4862c49ec69263b5df33a71f

    • SHA1

      e6c98cffb65b0ef3e59020b4f094e0c5123d7f5b

    • SHA256

      42a85a33d440c195bbe8890b74fa396875a33fd6354a4b2c7ca6dfb9516c6e6e

    • SHA512

      52fa94e7f416a2b904685f7fd52bcfe7bf73dccc9c6410e9b1300e4a549a806073605764e8339db74f2b4dda07d11ea001e011aa3a68e7d486a468b1a5557a0c

    Score
    10/10
    nanocoreevasionkeyloggerpersistenceransomwarespywarestealertrojan

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Enumerates physical storage devices

      Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

      ransomware

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Exploitation for Client Execution

1
T1203

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

4
T1082

Query Registry

2
T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks