Analysis

  • max time kernel
    55s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    18/11/2022, 06:46

General

  • Target

    9c8b27cd0131c5451b869eebce9518bf.exe

  • Size

    7KB

  • MD5

    9c8b27cd0131c5451b869eebce9518bf

  • SHA1

    860890fd1df703774615faca15ee9102405f16bb

  • SHA256

    9d9f2c64c077d3240f88906f3e73559c5bf554809a1e8974f8c8f28704c576ea

  • SHA512

    82f7d7fff8cf29af2f6230daa258d48d206cc8ad4c6efdc90cf4b01ed3b0bf1f892230faa01a3e7bbb9fcc853a59d2641179338f61a759b0a289c4f9935635f1

  • SSDEEP

    96:daIzZKMDduv8msmvlIiLrTXTWBkYPe2OpDOlk23v9zNt:daw0xvXsmKiLrykY22OpDOe23

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

maxlogs.webhop.me:1620

Mutex

9d764268-05c2-4a8e-8c39-b4db356d4640

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-29T07:34:04.203922136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1620

  • default_group

    x

  • 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

    9d764268-05c2-4a8e-8c39-b4db356d4640

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    maxlogs.webhop.me

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9c8b27cd0131c5451b869eebce9518bf.exe
    "C:\Users\Admin\AppData\Local\Temp\9c8b27cd0131c5451b869eebce9518bf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1272
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1176

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1176-71-0x00000000002C0000-0x00000000002DE000-memory.dmp

          Filesize

          120KB

        • memory/1176-83-0x0000000000FE0000-0x0000000000FEE000-memory.dmp

          Filesize

          56KB

        • memory/1176-85-0x0000000001000000-0x0000000001014000-memory.dmp

          Filesize

          80KB

        • memory/1176-57-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-58-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-60-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-61-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-63-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-66-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-68-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1176-73-0x0000000004EF5000-0x0000000004F06000-memory.dmp

          Filesize

          68KB

        • memory/1176-84-0x00000000048F0000-0x000000000491E000-memory.dmp

          Filesize

          184KB

        • memory/1176-72-0x00000000002A0000-0x00000000002AA000-memory.dmp

          Filesize

          40KB

        • memory/1176-70-0x0000000000290000-0x000000000029A000-memory.dmp

          Filesize

          40KB

        • memory/1176-74-0x00000000005D0000-0x00000000005E2000-memory.dmp

          Filesize

          72KB

        • memory/1176-75-0x0000000000AC0000-0x0000000000ADA000-memory.dmp

          Filesize

          104KB

        • memory/1176-76-0x0000000000AE0000-0x0000000000AEE000-memory.dmp

          Filesize

          56KB

        • memory/1176-77-0x0000000000C00000-0x0000000000C12000-memory.dmp

          Filesize

          72KB

        • memory/1176-79-0x0000000000E20000-0x0000000000E2E000-memory.dmp

          Filesize

          56KB

        • memory/1176-78-0x0000000000E10000-0x0000000000E1C000-memory.dmp

          Filesize

          48KB

        • memory/1176-80-0x0000000000E30000-0x0000000000E44000-memory.dmp

          Filesize

          80KB

        • memory/1176-81-0x0000000000E40000-0x0000000000E50000-memory.dmp

          Filesize

          64KB

        • memory/1176-82-0x0000000000F90000-0x0000000000FA4000-memory.dmp

          Filesize

          80KB

        • memory/1272-54-0x0000000000940000-0x0000000000948000-memory.dmp

          Filesize

          32KB

        • memory/1272-55-0x0000000075531000-0x0000000075533000-memory.dmp

          Filesize

          8KB

        • memory/1272-56-0x000000000A040000-0x000000000A262000-memory.dmp

          Filesize

          2.1MB