Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    11-07-2024 19:11

General

  • Target

    ILPEA_MRC2021751433030XMY,pdf.exe

  • Size

    680KB

  • MD5

    3efde66cdd917e83801b722b04ad1c20

  • SHA1

    e26af977f80544526851012f80061acd03ff72a6

  • SHA256

    a0aa261b6eca399214785a831f60f317f7fb5795d33fe2a07e330b7aabfc0318

  • SHA512

    2c0030d7e624668f35dd067f9e2029918d42f3c47f2923290628e330d0a68c4de24535415245936f403aafcc1bdc4a127c4700407a55a741c89db2ea285f5e9f

  • SSDEEP

    12288:3p+aRBZi970Hq83hAkJlk1wA8XyonCo+aUwbjpa1BDCROuTngLsIB:Z9ZhikJKJCx+atpab/WnFW

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

godismyhelperalways.ddns.net:2030

Mutex

08e0afad-4bed-4e7d-8205-2bf2bc84e8fb

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-14T17:48:21.782068136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    2030

  • default_group

    BLESSINGS

  • 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

    08e0afad-4bed-4e7d-8205-2bf2bc84e8fb

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    godismyhelperalways.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

Signatures

  • NanoCore

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ILPEA_MRC2021751433030XMY,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\ILPEA_MRC2021751433030XMY,pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1000
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ozUZdsdZtGvsul" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6BFC.tmp"
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:2832
    • C:\Users\Admin\AppData\Local\Temp\ILPEA_MRC2021751433030XMY,pdf.exe
      "{path}"
      2⤵
        PID:2724
      • C:\Users\Admin\AppData\Local\Temp\ILPEA_MRC2021751433030XMY,pdf.exe
        "{path}"
        2⤵
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2704

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Execution

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Persistence

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Privilege Escalation

    Boot or Logon Autostart Execution

    1
    T1547

    Registry Run Keys / Startup Folder

    1
    T1547.001

    Scheduled Task/Job

    1
    T1053

    Scheduled Task

    1
    T1053.005

    Defense Evasion

    Modify Registry

    1
    T1112

    Discovery

    System Information Discovery

    2
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp6BFC.tmp
      Filesize

      1KB

      MD5

      328293e3ad1771a6cb66b034c9ffc89c

      SHA1

      66ea6ebf610ea2c13f684e44cb9ece9a2147a158

      SHA256

      c3db6ff3a8e5cb5d998381dee416307e07b91316966abcf680edf7245245b030

      SHA512

      e2be7feaabb80e7f2ce5b01e4181f0270416ac064bd402f033c0ff291ecbfcff0faf8caa4e75ff72744feab3f4607221e8c70f4091e1cd453671958892d10cce

    • memory/1000-0-0x0000000074FE1000-0x0000000074FE2000-memory.dmp
      Filesize

      4KB

    • memory/1000-1-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/1000-2-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/1000-3-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/1000-4-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/1000-21-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/2704-9-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-8-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-12-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-20-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-18-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-16-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
      Filesize

      4KB

    • memory/2704-10-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/2704-23-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/2704-22-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB

    • memory/2704-26-0x0000000074FE0000-0x000000007558B000-memory.dmp
      Filesize

      5.7MB