Overview

overview

10

Static

static

8

IMG00120474.xls

windows7-x64

10

IMG00120474.xls

windows10-2004-x64

10

Sharing

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General

  • Target

    IMG00120474.xls

  • Size

    504KB

  • Sample

    221027-hf6vfabdap

  • MD5

    2da13a1f88dfb75e1f1a37fc4212adf4

  • SHA1

    ae03c0d7a946d97b148af77436f7495e0d9096a4

  • SHA256

    55c32a9bd16c2d9113c92d2b57f2204aee9f1685c0496cea083309bb70d86c6f

  • SHA512

    0eaa617bebb16c433a6a7b02faf9c9f96094cc400087baf5b358a50becd2dbec4a3e4a238792102bd8475644bb9b9451b56b102d1636d22a4034f74dba9d9e32

  • SSDEEP

    12288:Sf7+Zft5H0dos08l9ZLB/m9UCNB6xRNZw:STB08lzL9qNB6xRN

Score
10/10
agentteslananocorecollectionkeyloggermacromacro_on_actionpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

37.139.128.94:6000

Mutex

407839af-e81b-4512-9071-482887f971db

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-08-07T10:00:20.190590236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6000

  • default_group

    client

  • 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

    407839af-e81b-4512-9071-482887f971db

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    37.139.128.94

  • 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

Extracted

Family

agenttesla

C2

http://107.189.4.253/boots/inc/a155b6dca5b411.php

Targets

    • Target

      IMG00120474.xls

    • Size

      504KB

    • MD5

      2da13a1f88dfb75e1f1a37fc4212adf4

    • SHA1

      ae03c0d7a946d97b148af77436f7495e0d9096a4

    • SHA256

      55c32a9bd16c2d9113c92d2b57f2204aee9f1685c0496cea083309bb70d86c6f

    • SHA512

      0eaa617bebb16c433a6a7b02faf9c9f96094cc400087baf5b358a50becd2dbec4a3e4a238792102bd8475644bb9b9451b56b102d1636d22a4034f74dba9d9e32

    • SSDEEP

      12288:Sf7+Zft5H0dos08l9ZLB/m9UCNB6xRNZw:STB08lzL9qNB6xRN

    Score
    10/10
    agentteslananocorecollectionkeyloggerpersistencespywarestealertrojan

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

      keyloggertrojanstealerspywareagenttesla

    • NanoCore

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

      keyloggertrojanstealerspywarenanocore

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Drops startup file

    • Loads dropped DLL

    • Accesses Microsoft Outlook profiles

      collection

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks