Analysis

  • max time kernel
    13s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    18-01-2021 07:50

General

  • Target

    PAYMENT COPY RECEIPT.exe

  • Size

    434KB

  • MD5

    c3da28de257b1b534110d8697563a743

  • SHA1

    b127eb700d37a8b027fe67b78b0afa35975ffff9

  • SHA256

    17b4666d69c4c82a89ee9208dfe8ebb84e3f7acdd81dfb2320ed00efcce33134

  • SHA512

    747ab809f36efd6df6153ed1c3100a7e376677397ab7c23c4f2de2ef89d0dc17e25cbe9ab3180cece43f1188f62a56fca78b2779456cb23c276e20500422cf4a

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

chinomso.duckdns.org:7688

Mutex

5c856c52-5125-42de-9ed3-2389e16da064

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    chinomso.duckdns.org

  • backup_dns_server

    chinomso.duckdns.org

  • buffer_size

    65535

  • build_time

    2020-10-13T03:36:21.868380136Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTE2Ij8+DQo8VGFzayB2ZXJzaW9uPSIxLjIiIHhtbG5zPSJodHRwOi8vc2NoZW1hcy5taWNyb3NvZnQuY29tL3dpbmRvd3MvMjAwNC8wMi9taXQvdGFzayI+DQogIDxSZWdpc3RyYXRpb25JbmZvIC8+DQogIDxUcmlnZ2VycyAvPg0KICA8UHJpbmNpcGFscz4NCiAgICA8UHJpbmNpcGFsIGlkPSJBdXRob3IiPg0KICAgICAgPExvZ29uVHlwZT5JbnRlcmFjdGl2ZVRva2VuPC9Mb2dvblR5cGU+DQogICAgICA8UnVuTGV2ZWw+SGlnaGVzdEF2YWlsYWJsZTwvUnVuTGV2ZWw+DQogICAgPC9QcmluY2lwYWw+DQogIDwvUHJpbmNpcGFscz4NCiAgPFNldHRpbmdzPg0KICAgIDxNdWx0aXBsZUluc3RhbmNlc1BvbGljeT5QYXJhbGxlbDwvTXVsdGlwbGVJbnN0YW5jZXNQb2xpY3k+DQogICAgPERpc2FsbG93U3RhcnRJZk9uQmF0dGVyaWVzPmZhbHNlPC9EaXNhbGxvd1N0YXJ0SWZPbkJhdHRlcmllcz4NCiAgICA8U3RvcElmR29pbmdPbkJhdHRlcmllcz5mYWxzZTwvU3RvcElmR29pbmdPbkJhdHRlcmllcz4NCiAgICA8QWxsb3dIYXJkVGVybWluYXRlPnRydWU8L0FsbG93SGFyZFRlcm1pbmF0ZT4NCiAgICA8U3RhcnRXaGVuQXZhaWxhYmxlPmZhbHNlPC9TdGFydFdoZW5BdmFpbGFibGU+DQogICAgPFJ1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+ZmFsc2U8L1J1bk9ubHlJZk5ldHdvcmtBdmFpbGFibGU+DQogICAgPElkbGVTZXR0aW5ncz4NCiAgICAgIDxTdG9wT25JZGxlRW5kPmZhbHNlPC9TdG9wT25JZGxlRW5kPg0KICAgICAgPFJlc3RhcnRPbklkbGU+ZmFsc2U8L1Jlc3RhcnRPbklkbGU+DQogICAgPC9JZGxlU2V0dGluZ3M+DQogICAgPEFsbG93U3RhcnRPbkRlbWFuZD50cnVlPC9BbGxvd1N0YXJ0T25EZW1hbmQ+DQogICAgPEVuYWJsZWQ+dHJ1ZTwvRW5hYmxlZD4NCiAgICA8SGlkZGVuPmZhbHNlPC9IaWRkZW4+DQogICAgPFJ1bk9ubHlJZklkbGU+ZmFsc2U8L1J1bk9ubHlJZklkbGU+DQogICAgPFdha2VUb1J1bj5mYWxzZTwvV2FrZVRvUnVuPg0KICAgIDxFeGVjdXRpb25UaW1lTGltaXQ+UFQwUzwvRXhlY3V0aW9uVGltZUxpbWl0Pg0KICAgIDxQcmlvcml0eT40PC9Qcmlvcml0eT4NCiAgPC9TZXR0aW5ncz4NCiAgPEFjdGlvbnMgQ29udGV4dD0iQXV0aG9yIj4NCiAgICA8RXhlYz4NCiAgICAgIDxDb21tYW5kPiIjRVhFQ1VUQUJMRVBBVEgiPC9Db21tYW5kPg0KICAgICAgPEFyZ3VtZW50cz4kKEFyZzApPC9Bcmd1bWVudHM+DQogICAgPC9FeGVjPg0KICA8L0FjdGlvbnM+DQo8L1Rhc2s+

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    7688

  • 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

    5c856c52-5125-42de-9ed3-2389e16da064

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    chinomso.duckdns.org

  • primary_dns_server

    chinomso.duckdns.org

  • 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 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAYMENT COPY RECEIPT.exe
    "C:\Users\Admin\AppData\Local\Temp\PAYMENT COPY RECEIPT.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\PAYMENT COPY RECEIPT.exe
      "C:\Users\Admin\AppData\Local\Temp\PAYMENT COPY RECEIPT.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:1620
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1239.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1972
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1391.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1772

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\tmp1239.tmp
    MD5

    7b5f0c95e2d79859228267ea42895694

    SHA1

    3df34c5687efde4141225094d39ff7cae08d1e51

    SHA256

    3a1ac8d74e73caa86ecb8928327f7a3a53b21d19da46ba7b93c3ed48cb9db66a

    SHA512

    42b483614109ed944880265cf097e914c771b24d99ae85afec93936e04cfd1e1ec9635689e5ee324d91b86fa26d58a4ffe86958447da0b095e050dcde806b342

  • C:\Users\Admin\AppData\Local\Temp\tmp1391.tmp
    MD5

    819bdbdac3be050783d203020e6c4c30

    SHA1

    a373521fceb21cac8b93e55ee48578e40a6e740b

    SHA256

    0e5dedca6d0d3c50ebcedb5bbf51ef3d434eb6b43da46764205de7636131f053

    SHA512

    cece1c4d8b4db79fc6e3cd225efaccdf9d2493f28991b1d48439944af38aaa61a215bd00a0beedcbdecc4f1ec5be0843774375a483f3d4a573a3980c54798cbd

  • memory/1620-17-0x00000000007D0000-0x00000000007E9000-memory.dmp
    Filesize

    100KB

  • memory/1620-24-0x0000000000C40000-0x0000000000C46000-memory.dmp
    Filesize

    24KB

  • memory/1620-18-0x00000000004B0000-0x00000000004B3000-memory.dmp
    Filesize

    12KB

  • memory/1620-19-0x0000000000A50000-0x0000000000A5D000-memory.dmp
    Filesize

    52KB

  • memory/1620-11-0x0000000004944000-0x0000000004945000-memory.dmp
    Filesize

    4KB

  • memory/1620-9-0x0000000004942000-0x0000000004943000-memory.dmp
    Filesize

    4KB

  • memory/1620-8-0x0000000004941000-0x0000000004942000-memory.dmp
    Filesize

    4KB

  • memory/1620-2-0x000000000040188B-mapping.dmp
  • memory/1620-4-0x0000000074EE0000-0x00000000755CE000-memory.dmp
    Filesize

    6.9MB

  • memory/1620-29-0x0000000000F30000-0x0000000000F59000-memory.dmp
    Filesize

    164KB

  • memory/1620-3-0x0000000075C31000-0x0000000075C33000-memory.dmp
    Filesize

    8KB

  • memory/1620-16-0x0000000000460000-0x0000000000465000-memory.dmp
    Filesize

    20KB

  • memory/1620-30-0x0000000000E20000-0x0000000000E2F000-memory.dmp
    Filesize

    60KB

  • memory/1620-6-0x00000000003A0000-0x00000000003D3000-memory.dmp
    Filesize

    204KB

  • memory/1620-10-0x0000000004943000-0x0000000004944000-memory.dmp
    Filesize

    4KB

  • memory/1620-20-0x0000000000B50000-0x0000000000B65000-memory.dmp
    Filesize

    84KB

  • memory/1620-21-0x0000000000AB0000-0x0000000000AB6000-memory.dmp
    Filesize

    24KB

  • memory/1620-22-0x0000000000C20000-0x0000000000C2C000-memory.dmp
    Filesize

    48KB

  • memory/1620-23-0x0000000000C30000-0x0000000000C37000-memory.dmp
    Filesize

    28KB

  • memory/1620-5-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

  • memory/1620-25-0x0000000000D90000-0x0000000000D9D000-memory.dmp
    Filesize

    52KB

  • memory/1620-26-0x0000000000DA0000-0x0000000000DA9000-memory.dmp
    Filesize

    36KB

  • memory/1620-27-0x0000000000DF0000-0x0000000000DFF000-memory.dmp
    Filesize

    60KB

  • memory/1620-28-0x0000000000E00000-0x0000000000E0A000-memory.dmp
    Filesize

    40KB

  • memory/1772-14-0x0000000000000000-mapping.dmp
  • memory/1972-12-0x0000000000000000-mapping.dmp