Overview

overview

10

Static

static

1

PO091K43Z9.exe

windows7-x64

10

PO091K43Z9.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    PO091K43Z9.exe

  • Size

    1.9MB

  • Sample

    230227-hqcz4sca8w

  • MD5

    543dc2f0c0753a513107e1a927ae99d5

  • SHA1

    d748a1e2bfa2d485c9ac75590208dc1c00d4b2e0

  • SHA256

    4e5713ceec170e84cae9279b5c89afd51938b5352e7f393e2bd5490cc9d5a470

  • SHA512

    7a0fe50c6cab6001c5ca9e71f12c45f6212f11d3ee4219999db7bad7796a73dd3e181efa0f313c9823cc09606b08692762bc48a5788321f98c5af54dd46490d9

  • SSDEEP

    49152:NezI7YEYMFigIlrrVdp7CEmUxvKAfOi/6hH13:ECjOrTAoHmi/E

Score
10/10
darkcometnanocorefebuary 2023evasionkeyloggerpersistenceratspywarestealertrojan

Malware Config

Extracted

Family

darkcomet

Botnet

FEBUARY 2023

C2

mjosh6995.ddns.net:55665

Mutex

DC_MUTEX-S83UYVQ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    TYztkTZwyasi

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    chrome

Extracted

Family

nanocore

Version

1.2.2.0

C2

lisajennyjohn.ddns.net:22233

mjosh6995.ddns.net:22233
Mutex

be639d6f-221e-4487-9b18-8bcd5185dfbf

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    mjosh6995.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-12-08T16:24:55.881679736Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    22233

  • default_group

    FEBUARY 2023

  • 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

    be639d6f-221e-4487-9b18-8bcd5185dfbf

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    lisajennyjohn.ddns.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

      PO091K43Z9.exe

    • Size

      1.9MB

    • MD5

      543dc2f0c0753a513107e1a927ae99d5

    • SHA1

      d748a1e2bfa2d485c9ac75590208dc1c00d4b2e0

    • SHA256

      4e5713ceec170e84cae9279b5c89afd51938b5352e7f393e2bd5490cc9d5a470

    • SHA512

      7a0fe50c6cab6001c5ca9e71f12c45f6212f11d3ee4219999db7bad7796a73dd3e181efa0f313c9823cc09606b08692762bc48a5788321f98c5af54dd46490d9

    • SSDEEP

      49152:NezI7YEYMFigIlrrVdp7CEmUxvKAfOi/6hH13:ECjOrTAoHmi/E

    Score
    10/10
    darkcometnanocorefebuary 2023evasionkeyloggerpersistenceratspywarestealertrojan

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies security service

      evasion

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • Windows security bypass

      evasiontrojan

    • Disables Task Manager via registry modification

      evasion

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Checks whether UAC is enabled

      evasiontrojan

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

5
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks