Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-10-2022 14:19

General

  • Target

    P225880_pdf.exe

  • Size

    45KB

  • MD5

    588d190b8b0df56cd50bc5c90a6c4eba

  • SHA1

    f956770b566a3178f6777990511a748119202cb4

  • SHA256

    2bc2ede5e46b07762efeac1f0289437f588fe93be505fe61ed33b3bb142930b8

  • SHA512

    8e780233bc80a6a5f834ace620c9be1ded338eecf067a9200f41a86799de8425067a9325bfd18e9ad77df4823282a3ef8e1c9f422165f21f80086e297efa90ac

  • SSDEEP

    192:1/khkmoEzugbeQvs1u3A4JCSYx8tfMHHoYYwOJ4erAEdKdO58rNGgi47sEXCBeOS:1S3zleQvsW1G8tUHHojSeRiD9vXbXmx

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

albertsamco76.ddns.net:7480

79.134.225.71:7480

Mutex

595ac7be-87a8-4935-8bed-199af086cae8

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.134.225.71

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-15T18:29:52.126272236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    5000

  • connection_port

    7480

  • default_group

    Default

  • 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

    595ac7be-87a8-4935-8bed-199af086cae8

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    albertsamco76.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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
  • Creates scheduled task(s) 1 TTPs 2 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\P225880_pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\P225880_pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4248
    • C:\Users\Admin\AppData\Local\Temp\P225880_pdf.exe
      C:\Users\Admin\AppData\Local\Temp\P225880_pdf.exe
      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
      • Suspicious use of WriteProcessMemory
      PID:4124
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7EBA.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3892
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7F57.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:500

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\P225880_pdf.exe.log
    Filesize

    1KB

    MD5

    e87e48b105757e1c7563d1c719059733

    SHA1

    28a3f2b2e0672da2b531f4757d2b20b53032dafc

    SHA256

    0aaf22dc84cc3fcfe53de7ccfed8e662247dfb7f1a9967032c88790d0c663461

    SHA512

    bf19c5743143aee914a453c41189c722c9b90a5b8bf299cecf3e1f97656d32cd209ecb74da8aebc89bb41c27d189f73aaaabbc64fe383410c95dc76ad4218968

  • C:\Users\Admin\AppData\Local\Temp\tmp7EBA.tmp
    Filesize

    1KB

    MD5

    ae3164252374946f5adc65e2864e6d8b

    SHA1

    beb1b6126302b95763ac3896c654d1094371fefd

    SHA256

    38ece136349632d417a907b9c41bf93f4bb6dcd9bb0744536ef533079a5cc169

    SHA512

    c354112a83f19fc56965243c4efaf7767953dc2108e2b0e70774d6504dc9d967595b3c4ae78a2764482100b7ab740f6cab9d2c831ba0d63ba27d514693605a6e

  • C:\Users\Admin\AppData\Local\Temp\tmp7F57.tmp
    Filesize

    1KB

    MD5

    2271642ca970891700e3f48439739ed8

    SHA1

    cd472df2349f7db9e1e460d0ee28acd97b8a8793

    SHA256

    7aba66abbcb0b13455609174db23aed495a9adbef0e0acd28baa9c92445eda68

    SHA512

    4669a4ef8ec28cdb852ffc1401576b1bf9a9d837797d7d92bc88c18b3097404f36854e50167b309706fef400cabc43c876569ce2797ba85eb169a2783b8fe807

  • memory/500-143-0x0000000000000000-mapping.dmp
  • memory/3892-141-0x0000000000000000-mapping.dmp
  • memory/4124-135-0x0000000000400000-0x000000000043A000-memory.dmp
    Filesize

    232KB

  • memory/4124-138-0x0000000005260000-0x00000000052F2000-memory.dmp
    Filesize

    584KB

  • memory/4124-139-0x0000000005300000-0x000000000539C000-memory.dmp
    Filesize

    624KB

  • memory/4124-140-0x00000000051F0000-0x00000000051FA000-memory.dmp
    Filesize

    40KB

  • memory/4124-137-0x0000000005770000-0x0000000005D14000-memory.dmp
    Filesize

    5.6MB

  • memory/4124-134-0x0000000000000000-mapping.dmp
  • memory/4248-132-0x0000000000F80000-0x0000000000F90000-memory.dmp
    Filesize

    64KB

  • memory/4248-133-0x0000000006660000-0x0000000006682000-memory.dmp
    Filesize

    136KB