Analysis

  • max time kernel
    160s
  • max time network
    168s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    31-08-2022 01:23

General

  • Target

    3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe

  • Size

    725KB

  • MD5

    1607d7d6b2337e8417b9c142b195cc37

  • SHA1

    85983779eabc38a060da7401559407a5bbd60873

  • SHA256

    3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90

  • SHA512

    323745e6529be6a8fae56afd9bed9d4fd27c052d0b6ef573d8b66ac785a1232da105fae1189f69afb89cbb9ef39baaa1669cd8edff76460b00402149113cb8f6

  • SSDEEP

    12288:7Sqg5SRF75ea2OXBVxqJnWkLjUOUjekZ90KzvTPluLlQ8f4fMihepn:vRZ5rRxV847pjZbzvTPlCC8f9Fn

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

kasawulli845.ddns.net:5211

127.0.0.1:5211

Mutex

d4cfd040-7e1e-457d-bd2d-3dc785b0760c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-05-29T06:31:10.522487936Z

  • 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

    5211

  • default_group

    AUGFILE

  • 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

    d4cfd040-7e1e-457d-bd2d-3dc785b0760c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    kasawulli845.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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe
    "C:\Users\Admin\AppData\Local\Temp\3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:656
    • C:\Users\Admin\AppData\Local\Temp\3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe
      "C:\Users\Admin\AppData\Local\Temp\3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4252
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UPNP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAA5.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3928
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UPNP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1544.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:5024

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\3ac36b3612907df3fd1724900c917c215ef9bf6c5530c81d3b40a1faf7447b90.exe.log

    Filesize

    1KB

    MD5

    0b7d64364122b4ad54fb5bcbdf451501

    SHA1

    d184d2d401fa8d66d9bec291cd35b5e67c94566d

    SHA256

    aca7b1b47e14599fde606d565521581e5e86e09a7b15c937e81ce40dd3431632

    SHA512

    b2afcc4cf1a3f85525f6187d41b4017cf906fe81714fcfce9e225042510c49984861f6cfc8a0a7f664b247bf2c502091abaa589bc515ab5f1fadf60c3f90fa4f

  • C:\Users\Admin\AppData\Local\Temp\tmp1544.tmp

    Filesize

    1KB

    MD5

    4c832ec236838b76043c902806a7b4b5

    SHA1

    80ecc30c4e666f3ad15ef638e60896af6cdf608d

    SHA256

    b0d636f0610fc5fdf28fdcdf81312152a975ce3401dc5e46de9995ec86ee1833

    SHA512

    4654f509857c727a0eed3c767982018d72fc46bb480e5b43533d345d71fe0e401322af6ec200b9e62a40eaa94da96d192ffb3acaa656a9c148377745c111d838

  • C:\Users\Admin\AppData\Local\Temp\tmpAA5.tmp

    Filesize

    1KB

    MD5

    b6cfd003f1682d4dd9e6745b448a2e50

    SHA1

    12a6b0c7596324e28539781634b166574525c9a2

    SHA256

    d499d9729b97f0db825b813560bc912d5e9de1e2bf17344b2837970ec5eea942

    SHA512

    903ed7c0923e2c97d33849d929da03244b2a5e45b7b1e241b915e7586add1c5d0e18e13c537e5aca6d2deb110bba71b824c568d877af8d8f2ceef991d46a803f

  • memory/656-120-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-121-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-122-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-123-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-124-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-125-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-126-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-127-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-128-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-129-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-130-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-131-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-132-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-133-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-134-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-135-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-136-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-137-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-138-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-139-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-140-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-141-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-142-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-143-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-144-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-145-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-146-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-147-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-148-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-149-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-150-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-151-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-152-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-153-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-154-0x00000000009C0000-0x0000000000A7A000-memory.dmp

    Filesize

    744KB

  • memory/656-155-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-156-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-157-0x0000000005800000-0x0000000005CFE000-memory.dmp

    Filesize

    5.0MB

  • memory/656-158-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-159-0x0000000005300000-0x0000000005392000-memory.dmp

    Filesize

    584KB

  • memory/656-160-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-161-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-162-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-163-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-164-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-165-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-166-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-167-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-168-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-169-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-170-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-171-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-172-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-173-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-174-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-175-0x00000000056B0000-0x00000000056BA000-memory.dmp

    Filesize

    40KB

  • memory/656-176-0x0000000005EC0000-0x0000000006064000-memory.dmp

    Filesize

    1.6MB

  • memory/656-177-0x0000000006070000-0x00000000063C0000-memory.dmp

    Filesize

    3.3MB

  • memory/656-178-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-179-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-180-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-181-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-182-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-183-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-184-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-185-0x0000000005E50000-0x0000000005E62000-memory.dmp

    Filesize

    72KB

  • memory/656-186-0x0000000007E20000-0x0000000007E42000-memory.dmp

    Filesize

    136KB

  • memory/656-187-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-188-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-189-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-190-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-191-0x0000000076FB0000-0x000000007713E000-memory.dmp

    Filesize

    1.6MB

  • memory/656-220-0x000000000A060000-0x000000000A078000-memory.dmp

    Filesize

    96KB

  • memory/656-230-0x0000000000B40000-0x0000000000B4C000-memory.dmp

    Filesize

    48KB

  • memory/656-231-0x0000000001200000-0x0000000001292000-memory.dmp

    Filesize

    584KB

  • memory/656-232-0x000000000A320000-0x000000000A3BC000-memory.dmp

    Filesize

    624KB

  • memory/656-233-0x000000000A3F0000-0x000000000A456000-memory.dmp

    Filesize

    408KB

  • memory/656-234-0x00000000012A0000-0x00000000012DA000-memory.dmp

    Filesize

    232KB

  • memory/3928-293-0x0000000000000000-mapping.dmp

  • memory/4252-236-0x000000000041E792-mapping.dmp

  • memory/4252-270-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/4252-335-0x00000000050F0000-0x00000000050FA000-memory.dmp

    Filesize

    40KB

  • memory/4252-336-0x0000000005100000-0x000000000511E000-memory.dmp

    Filesize

    120KB

  • memory/4252-338-0x0000000005300000-0x000000000530A000-memory.dmp

    Filesize

    40KB

  • memory/4252-345-0x0000000005310000-0x0000000005322000-memory.dmp

    Filesize

    72KB

  • memory/4252-346-0x0000000005FA0000-0x0000000005FBA000-memory.dmp

    Filesize

    104KB

  • memory/5024-312-0x0000000000000000-mapping.dmp