Analysis

  • max time kernel
    46s
  • max time network
    178s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    27-07-2021 15:01

General

  • Target

    d9b7fb50628a76fe7603d82f6f0c0bd8.exe

  • Size

    510KB

  • MD5

    d9b7fb50628a76fe7603d82f6f0c0bd8

  • SHA1

    019ef807727684992fefd8dc47bdcc2593419389

  • SHA256

    c8d57922491f40b0c3e2ea9b0aff04df0de89ae9a6525508868134d1caca3113

  • SHA512

    e966f22d4b151262c4177913d38d7b733565d5f75324cfcf3a61e56168a32bd848aeadc4cdcfe8d66d747d8926eadf1163219ba2360fcd368e2eb179d7ee8412

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

godisgood1.hopto.org:7712

Mutex

9ed8d108-2eb1-4e23-9679-783796e4baff

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-04-23T17:16:53.813634136Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7712

  • 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

    9ed8d108-2eb1-4e23-9679-783796e4baff

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    godisgood1.hopto.org

  • 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.

  • suricata: ET MALWARE Possible NanoCore C2 60B
  • 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 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d9b7fb50628a76fe7603d82f6f0c0bd8.exe
    "C:\Users\Admin\AppData\Local\Temp\d9b7fb50628a76fe7603d82f6f0c0bd8.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1724
    • C:\Users\Admin\AppData\Local\Temp\d9b7fb50628a76fe7603d82f6f0c0bd8.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
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1564.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:268
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "LAN Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp168E.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:272

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\Temp\tmp1564.tmp
    MD5

    07e698ee1356499bb21f852c727311db

    SHA1

    a7e0274018f4b1cc2ee6389339712d38580d740e

    SHA256

    80930afbfad1b824af5a43d3d0029385f846d5d1faa2d59c8b9859df5e4ae055

    SHA512

    d7d9a43521a8eb949408510636bdbca1b6b7bd069a50596fcd21ac86358fae88c0458e828193994aecc482df801cec47d173a55946465a273f689a02bfe0cbb8

  • C:\Users\Admin\AppData\Local\Temp\tmp168E.tmp
    MD5

    54865f98871478b2b88b7f8aa6100915

    SHA1

    6f8667f1ce25cebee2a7b460668736ff6bcfac54

    SHA256

    287f7b4372926ff59bb9a14bdfc00ad63f92af8efdb2e14f6f6baf31878fd44e

    SHA512

    caba0bd0cb0eda0710291f9754cfdef1a3d8fdb8b6d07f5d3e4d1e7b09c87f37032287ddef0a75485d6e685afa3510ee64453662e6c8d223ae171b392b58e493

  • memory/268-67-0x0000000000000000-mapping.dmp
  • memory/272-69-0x0000000000000000-mapping.dmp
  • memory/1708-63-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1708-64-0x000000000041E792-mapping.dmp
  • memory/1708-66-0x0000000000340000-0x0000000000341000-memory.dmp
    Filesize

    4KB

  • memory/1724-60-0x0000000075161000-0x0000000075163000-memory.dmp
    Filesize

    8KB

  • memory/1724-61-0x0000000002150000-0x0000000002151000-memory.dmp
    Filesize

    4KB

  • memory/1724-62-0x0000000002151000-0x0000000002152000-memory.dmp
    Filesize

    4KB