Analysis

  • max time kernel
    50s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-08-2022 09:01

General

  • Target

    Receivable Amount Error.exe

  • Size

    221KB

  • MD5

    d3322e3458d713d7c5c87145bc3519be

  • SHA1

    a7d3449761262bf54f69233f0784e2ec3944a47c

  • SHA256

    af6e110e4aca8b4e6b57030a62faf61b9d341a3a266df8cf9bd64b8383b453ad

  • SHA512

    7e592d9716c941c32b4ab0a78bc413747a1efdc9fe45b0d42d51d8bc5f0e49b24e7659f0b7b34485edeb28a6332392840667921ada277196e16e95dc59906a1b

  • SSDEEP

    3072:Die6Njrjc/Ddpmj9WH6/Pg1RBJjWs77MofldMW/3erVP/1YgiIW9:DQDuA9Wa/PARBJjtUPy8

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

katiebrady616.ddns.net:705

Mutex

2d48fc8b-fee4-4b78-80c9-137d5cd95a4a

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    katiebrady616.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-10T22:30:35.118636936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    705

  • default_group

    OYDAY

  • 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

    2d48fc8b-fee4-4b78-80c9-137d5cd95a4a

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    katiebrady616.ddns.net

  • 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.

  • Downloads MZ/PE file
  • 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
  • Suspicious behavior: EnumeratesProcesses 4 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\Receivable Amount Error.exe
    "C:\Users\Admin\AppData\Local\Temp\Receivable Amount Error.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Users\Admin\AppData\Local\Temp\Receivable Amount Error.exe
      "C:\Users\Admin\AppData\Local\Temp\Receivable Amount Error.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
      PID:1712

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/456-54-0x00000000001C0000-0x00000000001FE000-memory.dmp

    Filesize

    248KB

  • memory/456-55-0x0000000074F01000-0x0000000074F03000-memory.dmp

    Filesize

    8KB

  • memory/456-56-0x00000000003E0000-0x00000000003F0000-memory.dmp

    Filesize

    64KB

  • memory/1712-57-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-58-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-60-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-61-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-64-0x000000000041E792-mapping.dmp

  • memory/1712-65-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-66-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-70-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-73-0x00000000000C0000-0x00000000000F8000-memory.dmp

    Filesize

    224KB

  • memory/1712-75-0x00000000005D0000-0x00000000005DA000-memory.dmp

    Filesize

    40KB

  • memory/1712-76-0x0000000001E90000-0x0000000001EAE000-memory.dmp

    Filesize

    120KB

  • memory/1712-77-0x0000000001DB0000-0x0000000001DBA000-memory.dmp

    Filesize

    40KB

  • memory/1712-78-0x0000000001EC0000-0x0000000001ED2000-memory.dmp

    Filesize

    72KB

  • memory/1712-79-0x0000000004050000-0x000000000406A000-memory.dmp

    Filesize

    104KB

  • memory/1712-80-0x0000000004070000-0x000000000407E000-memory.dmp

    Filesize

    56KB

  • memory/1712-81-0x00000000040D0000-0x00000000040E2000-memory.dmp

    Filesize

    72KB

  • memory/1712-82-0x0000000004160000-0x000000000416E000-memory.dmp

    Filesize

    56KB

  • memory/1712-83-0x0000000004290000-0x000000000429C000-memory.dmp

    Filesize

    48KB

  • memory/1712-84-0x00000000042A0000-0x00000000042B4000-memory.dmp

    Filesize

    80KB

  • memory/1712-85-0x00000000043B0000-0x00000000043C0000-memory.dmp

    Filesize

    64KB

  • memory/1712-86-0x00000000043C0000-0x00000000043D4000-memory.dmp

    Filesize

    80KB

  • memory/1712-87-0x00000000043D0000-0x00000000043DE000-memory.dmp

    Filesize

    56KB

  • memory/1712-88-0x0000000004440000-0x000000000446E000-memory.dmp

    Filesize

    184KB

  • memory/1712-89-0x00000000043F0000-0x0000000004404000-memory.dmp

    Filesize

    80KB