Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 01:53

General

  • Target

    VINACONEX-PRODUCT_LIST#20200723.exe

  • Size

    594KB

  • MD5

    72ac90903934e7a69ae74cd4d9c4f4fd

  • SHA1

    ee01479950748c63cdd825af3ac2d0c7d9641acd

  • SHA256

    a7b27af3279848802a012fad89ce6f0543e80e54b28b02360bb416e39a55bbf3

  • SHA512

    76791ead2b86be048e69cd138b1e12129c495042e973c5f9ba23bf194674b889afbb6e0560256b1f1415a06a5cee77adfa9995ed2ead08d522064dcbfd67f709

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

onebillion.hopto.org:20219

185.244.30.192:20219

Mutex

b5d3a073-d2e5-494f-bd00-21b16cad7f7a

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.244.30.192

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-05T07:34:27.143569036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    20219

  • default_group

    2-trial

  • 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

    b5d3a073-d2e5-494f-bd00-21b16cad7f7a

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    onebillion.hopto.org

  • primary_dns_server

    8.8.8.8

  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VINACONEX-PRODUCT_LIST#20200723.exe
    "C:\Users\Admin\AppData\Local\Temp\VINACONEX-PRODUCT_LIST#20200723.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1708
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ctjfOdGq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp568A.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1556
    • C:\Users\Admin\AppData\Local\Temp\VINACONEX-PRODUCT_LIST#20200723.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1984

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp568A.tmp

    Filesize

    1KB

    MD5

    a03c926e67ba1b524ac22a0cbee7a409

    SHA1

    ba696bd5f0c39af1136423308f9d3efebad54ba3

    SHA256

    cc9f30ef567a94a9745e35b47b4105ec560b71558332013bf14f11d2f2b4d8bf

    SHA512

    1c2d5284ce07c97a624fde0090aae54ea4843d8e73c5a592785d308b13b135bea6e74c7c884eca26467eccf5665fa177172802d9ce5de0992d62e4271ffc1204

  • memory/1556-56-0x0000000000000000-mapping.dmp

  • memory/1708-54-0x00000000758D1000-0x00000000758D3000-memory.dmp

    Filesize

    8KB

  • memory/1708-55-0x0000000074760000-0x0000000074D0B000-memory.dmp

    Filesize

    5.7MB

  • memory/1984-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-58-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-62-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-65-0x000000000041E792-mapping.dmp

  • memory/1984-67-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-69-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1984-71-0x0000000074760000-0x0000000074D0B000-memory.dmp

    Filesize

    5.7MB