Analysis

  • max time kernel
    172s
  • max time network
    174s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/11/2022, 00:05

General

  • Target

    6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe

  • Size

    373KB

  • MD5

    8bec63147c104503e5fbf015f43aada1

  • SHA1

    7ac45539ec554d1868b76203d18d2c46fb4f069f

  • SHA256

    6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d

  • SHA512

    95147f853d23e498f46bc5f1d163fcfdaace088cf12f2e31409490ab9501483067686ef0920e419507c788468de045168c4460a570db4bf789f56441a6978f32

  • SSDEEP

    6144:A3GqLppybgISQTAfIi3afLvcWGJDB2uASN8EUbRSLQ0EwrfKza:clypScAfYfTEJDjFelALPTK

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

euroano.ddns.net:9033

euroano2.ddns.net:9033

Mutex

69b947b8-14b5-4929-94b4-6b6cc9d47ccf

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    euroano2.ddns.net

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-23T22:33:32.053582736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    9033

  • default_group

    nano

  • 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

    69b947b8-14b5-4929-94b4-6b6cc9d47ccf

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    euroano.ddns.net

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • NanoCore

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe
    "C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3592
    • C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe
      "C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"
      2⤵
        PID:2424
      • C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe
        "C:\Users\Admin\AppData\Local\Temp\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe"
        2⤵
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:1744

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\6771ab93cecc2ca6b8527d18d4a6c449610d7d836d7a4d2bd9321b0993d0e84d.exe.log

            Filesize

            400B

            MD5

            0a9b4592cd49c3c21f6767c2dabda92f

            SHA1

            f534297527ae5ccc0ecb2221ddeb8e58daeb8b74

            SHA256

            c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd

            SHA512

            6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307

          • memory/1744-135-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1744-137-0x0000000074C60000-0x0000000075211000-memory.dmp

            Filesize

            5.7MB

          • memory/1744-139-0x0000000074C60000-0x0000000075211000-memory.dmp

            Filesize

            5.7MB

          • memory/3592-132-0x0000000074C60000-0x0000000075211000-memory.dmp

            Filesize

            5.7MB

          • memory/3592-138-0x0000000074C60000-0x0000000075211000-memory.dmp

            Filesize

            5.7MB