Analysis

  • max time kernel
    139s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    31-01-2021 07:45

General

  • Target

    CHT International.exe

  • Size

    962KB

  • MD5

    e2c47d253c496826365f96126fbd1ce1

  • SHA1

    d3d866e2e9f30701eaf090a363492d187238d0ed

  • SHA256

    f2206fc8580f9cb611e74d4070606043a81b5c0bd1bf7024da76545e48e81aa2

  • SHA512

    4aa6e639c1e378cbf82b98c16b3001271457fbe67d9de57ca2d75109a8851aa7da77f4895c04ab1dbb40fb8f6a6aa74e91949b399f3c78bfc48b070328332930

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

fgtrert.duckdns.org:4948

qweerreww.duckdns.org:4948

Mutex

f9d67c34-3506-4888-9966-78d7bc0f3872

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    qweerreww.duckdns.org

  • backup_dns_server

    qweerreww.duckdns.org

  • buffer_size

    65535

  • build_time

    2020-11-08T18:33:11.699418536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4948

  • 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

    f9d67c34-3506-4888-9966-78d7bc0f3872

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    fgtrert.duckdns.org

  • primary_dns_server

    fgtrert.duckdns.org

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\CHT International.exe
    "C:\Users\Admin\AppData\Local\Temp\CHT International.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:496
    • C:\Users\Admin\AppData\Local\Temp\CHT International.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2304

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\CHT International.exe.log
    MD5

    b4f7a6a57cb46d94b72410eb6a6d45a9

    SHA1

    69f3596ffa027202d391444b769ceea0ae14c5f7

    SHA256

    23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

    SHA512

    be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

  • memory/496-7-0x0000000007340000-0x0000000007341000-memory.dmp
    Filesize

    4KB

  • memory/496-3-0x00000000004D0000-0x00000000004D1000-memory.dmp
    Filesize

    4KB

  • memory/496-6-0x0000000007350000-0x0000000007351000-memory.dmp
    Filesize

    4KB

  • memory/496-2-0x0000000073AD0000-0x00000000741BE000-memory.dmp
    Filesize

    6.9MB

  • memory/496-11-0x00000000096D0000-0x00000000096D1000-memory.dmp
    Filesize

    4KB

  • memory/496-9-0x0000000007680000-0x0000000007684000-memory.dmp
    Filesize

    16KB

  • memory/496-5-0x00000000077B0000-0x00000000077B1000-memory.dmp
    Filesize

    4KB

  • memory/496-10-0x0000000002690000-0x00000000026EB000-memory.dmp
    Filesize

    364KB

  • memory/496-8-0x00000000072D0000-0x00000000072D1000-memory.dmp
    Filesize

    4KB

  • memory/2304-12-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/2304-15-0x0000000073AD0000-0x00000000741BE000-memory.dmp
    Filesize

    6.9MB

  • memory/2304-13-0x000000000041E792-mapping.dmp
  • memory/2304-22-0x00000000057C0000-0x00000000057C5000-memory.dmp
    Filesize

    20KB

  • memory/2304-23-0x0000000005FC0000-0x0000000005FD9000-memory.dmp
    Filesize

    100KB

  • memory/2304-24-0x00000000060F0000-0x00000000060F3000-memory.dmp
    Filesize

    12KB

  • memory/2304-25-0x0000000005580000-0x0000000005581000-memory.dmp
    Filesize

    4KB