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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/11/2024, 08:04

General

  • Target

    6287467283873,pdf.exe

  • Size

    392KB

  • MD5

    7d05704659c455feb3db77a62fe601bb

  • SHA1

    803b4d7d1a5a75c1afaa715477a4250b031e8ac2

  • SHA256

    5f04144eb435bf9f55a34c4ff65c42438249640b7cf8228cd9a5cbc84f291d64

  • SHA512

    1632acabaeec7a10ed504f3a75dd065b7238ffa086431b82140f0788ce8769fd31b5087bee352914f56e226ce2c79794d6814900127e8efb92a0a73111a402a5

  • SSDEEP

    6144:vdxgw0ffdLQt2OOn6RGDbvvpQrSUQ0vK1PjxJ2lwipq17:Vxgw0ffdLzOhRwvmrScKlmlnq17

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

aboki0419.duckdns.org:9900

abokijob.hopto.org:9900

Mutex

a0c4817f-89a6-4daf-be72-4cec2c6ad4d3

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    abokijob.hopto.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-09-24T13:12:11.549725036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9900

  • default_group

    1001

  • 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

    a0c4817f-89a6-4daf-be72-4cec2c6ad4d3

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    aboki0419.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

Signatures

  • NanoCore

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

  • Nanocore family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6287467283873,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\6287467283873,pdf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4872
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UBdIGyYte" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9E3F.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2728
    • C:\Users\Admin\AppData\Local\Temp\6287467283873,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\6287467283873,pdf.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1384

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\6287467283873,pdf.exe.log

    Filesize

    500B

    MD5

    f09b18de068f5d3b00bf97d8c6b28542

    SHA1

    41b4356341b9ba28711ca911ae47983e26415626

    SHA256

    e431fc364d7fb15cf7679b139ef48208190a8ac3809d8f05ad5504e8d18599a1

    SHA512

    90b77b97c54ab2d2fe9e1a36ad124f9f9461e0facf1868ad61b34e8e0ebd05dc46ad0b160d879b457d943e2904671059cebb499e1a922e7064c027f1fb22afc0

  • C:\Users\Admin\AppData\Local\Temp\tmp9E3F.tmp

    Filesize

    1KB

    MD5

    51fb2ec984543846b72ded7bd435d23d

    SHA1

    3a18181a604abcd29ecab584148dc17f40e08fa6

    SHA256

    f5d6f8e06e3b2797933963434bfe05be0a250d021a7add79eff6a62549092cb6

    SHA512

    08daf0becb0adc1e7dc569140c6b10b6d5c104ba8ec63fad91f1bd90cd99ae589abffd82af8c0623e8c1dbea73e8ccd1951337931b56f27781ece8d1a29c4a91

  • memory/1384-13-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/1384-19-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/1384-18-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/1384-17-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/1384-15-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/1384-10-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4872-3-0x0000000074742000-0x0000000074743000-memory.dmp

    Filesize

    4KB

  • memory/4872-14-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4872-4-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4872-0-0x0000000074742000-0x0000000074743000-memory.dmp

    Filesize

    4KB

  • memory/4872-2-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB

  • memory/4872-1-0x0000000074740000-0x0000000074CF1000-memory.dmp

    Filesize

    5.7MB