Analysis

  • max time kernel
    36s
  • max time network
    196s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    21-07-2021 18:07

General

  • Target

    fb64fc2471a48928b7989f7e959de261.exe

  • Size

    867KB

  • MD5

    fb64fc2471a48928b7989f7e959de261

  • SHA1

    334f95083ee83d20255b87e0bfd4aae86a922d20

  • SHA256

    cc536d630284e622821d1034fadec488cb35dc72bdfb75edbd184a638d052f98

  • SHA512

    c96a7ef0e0691096e7cd8c841696a4be951f4b1621c4aa89b39d98e24e9310464558c66eba3f67600e169da46d9936d670a26802b2f5550a4804552ef9fc7916

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

hhjhtggfr.duckdns.org:8234

dertrefg.duckdns.org:8234

Mutex

6a1c2465-7ac5-4f1d-acc5-ef04fcf454c9

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    dertrefg.duckdns.org

  • backup_dns_server

    dertrefg.duckdns.org

  • buffer_size

    65535

  • build_time

    2021-03-26T23:25:40.118592436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8234

  • 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

    6a1c2465-7ac5-4f1d-acc5-ef04fcf454c9

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    hhjhtggfr.duckdns.org

  • primary_dns_server

    hhjhtggfr.duckdns.org

  • 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
  • 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 8 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\fb64fc2471a48928b7989f7e959de261.exe
    "C:\Users\Admin\AppData\Local\Temp\fb64fc2471a48928b7989f7e959de261.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1092
    • C:\Users\Admin\AppData\Local\Temp\fb64fc2471a48928b7989f7e959de261.exe
      C:\Users\Admin\AppData\Local\Temp\fb64fc2471a48928b7989f7e959de261.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:1028

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1028-75-0x00000000047D0000-0x00000000047D1000-memory.dmp

    Filesize

    4KB

  • memory/1028-87-0x0000000004320000-0x000000000432F000-memory.dmp

    Filesize

    60KB

  • memory/1028-76-0x0000000000A30000-0x0000000000A3D000-memory.dmp

    Filesize

    52KB

  • memory/1028-86-0x0000000004780000-0x00000000047A9000-memory.dmp

    Filesize

    164KB

  • memory/1028-68-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1028-69-0x000000000041E792-mapping.dmp

  • memory/1028-70-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1028-72-0x00000000005E0000-0x00000000005E5000-memory.dmp

    Filesize

    20KB

  • memory/1028-73-0x00000000005F0000-0x0000000000609000-memory.dmp

    Filesize

    100KB

  • memory/1028-77-0x0000000000A40000-0x0000000000A55000-memory.dmp

    Filesize

    84KB

  • memory/1028-85-0x0000000004280000-0x000000000428A000-memory.dmp

    Filesize

    40KB

  • memory/1028-84-0x0000000002170000-0x000000000217F000-memory.dmp

    Filesize

    60KB

  • memory/1028-74-0x0000000000610000-0x0000000000613000-memory.dmp

    Filesize

    12KB

  • memory/1028-78-0x0000000000AB0000-0x0000000000AB6000-memory.dmp

    Filesize

    24KB

  • memory/1028-80-0x0000000000B20000-0x0000000000B27000-memory.dmp

    Filesize

    28KB

  • memory/1028-79-0x0000000000B10000-0x0000000000B1C000-memory.dmp

    Filesize

    48KB

  • memory/1028-81-0x0000000000B80000-0x0000000000B86000-memory.dmp

    Filesize

    24KB

  • memory/1028-82-0x0000000000B90000-0x0000000000B9D000-memory.dmp

    Filesize

    52KB

  • memory/1028-83-0x0000000000BA0000-0x0000000000BA9000-memory.dmp

    Filesize

    36KB

  • memory/1092-61-0x0000000004D30000-0x0000000004D31000-memory.dmp

    Filesize

    4KB

  • memory/1092-62-0x0000000000750000-0x00000000007BD000-memory.dmp

    Filesize

    436KB

  • memory/1092-67-0x0000000005080000-0x0000000005101000-memory.dmp

    Filesize

    516KB

  • memory/1092-59-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

    Filesize

    4KB