Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240730-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/07/2024, 00:22

General

  • Target
    Proof Of Payment Disbursement.pdf.scr
  • Size 1.6MB
  • Sample240729-an98tsxeqf
  • SHA256 11b7337ff68b7b90ac1d92c7c35b09277506dad0a9f05d0dc82a4673628e24e4
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • hanku.giize.com:6051

  • harold.2waky.com:6051

Mutex
  • daa352aa-fd0a-420c-aa95-b32075b10c0a

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    harold.2waky.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2019-08-13T08:35:33.514699636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6051

  • default_group

    FRESH

  • 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

    daa352aa-fd0a-420c-aa95-b32075b10c0a

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    hanku.giize.com

  • 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.

  • Drops startup file 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proof Of Payment Disbursement.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Proof Of Payment Disbursement.pdf.scr" /S
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:5028
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v2.0.50727\\\\RegAsm.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3260

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        memory/3260-5-0x0000000000400000-0x0000000000438000-memory.dmp

        memory/3260-6-0x0000000073922000-0x0000000073923000-memory.dmp

        memory/3260-7-0x0000000073920000-0x0000000073ED1000-memory.dmp

        memory/3260-8-0x0000000073920000-0x0000000073ED1000-memory.dmp

        memory/3260-10-0x0000000073920000-0x0000000073ED1000-memory.dmp

        memory/3260-11-0x0000000073922000-0x0000000073923000-memory.dmp

        memory/3260-12-0x0000000073920000-0x0000000073ED1000-memory.dmp

        memory/5028-3-0x0000000003EE0000-0x0000000003F46000-memory.dmp

        memory/5028-4-0x00000000040A0000-0x0000000004106000-memory.dmp