Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v200430
  • submitted
    08-07-2020 08:50

General

  • Target

    Proof Of Payment.pdf.scr

  • Size

    802KB

  • MD5

    def46fa8f7ed19921147161cb4d20164

  • SHA1

    56322d0751e48e4a8ee48dcd3c44a058d2f224cd

  • SHA256

    38bf20255640821b131eaa9c22c16a6e55e61e18a6cd4e248aa07b919847d626

  • SHA512

    ca4c063e5dbb3389958b865cc572f618ce8810d90a8d88a638742f53e808f254bcd07a55f4c7f4f6fd93ff81a6fcec6a8356326ba2087ec09e25eca3d9de0187

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harolds.ooguy.com:6051

harold.jetos.com:6051

Mutex

501fcca9-f8c3-4f9b-a6ac-05c50b2994da

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    harold.jetos.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-12T14:32:58.481672636Z

  • 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

    Spartan

  • 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

    501fcca9-f8c3-4f9b-a6ac-05c50b2994da

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    harolds.ooguy.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

  • Suspicious use of WriteProcessMemory 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • NanoCore

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

  • Drops startup file 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr
    "C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr" /S
    1⤵
    • Suspicious use of WriteProcessMemory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetThreadContext
    PID:1484
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      PID:1600
    • C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr
      "C:\Users\Admin\AppData\Local\Temp\Proof Of Payment.pdf.scr" /S
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious behavior: GetForegroundWindowSpam
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      PID:1652

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1600-0-0x0000000000000000-mapping.dmp
  • memory/1652-2-0x000000000047D4B0-mapping.dmp
  • memory/1652-1-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1652-3-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1652-4-0x0000000000400000-0x000000000047F000-memory.dmp
    Filesize

    508KB

  • memory/1652-5-0x0000000002100000-0x0000000002138000-memory.dmp
    Filesize

    224KB

  • memory/1652-6-0x00000000021C2000-0x00000000021C3000-memory.dmp
    Filesize

    4KB