Analysis

  • max time kernel
    60s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    26-11-2020 06:53

General

  • Target

    New PO 64739 (UK).exe

  • Size

    915KB

  • MD5

    b6babb0d3661cd172c93c496dc4c1db1

  • SHA1

    de2db850207d77611f557a060681f2c2a19ae1ef

  • SHA256

    bca89f6ecbf4dfde0cc003b96f907ae1ab9b33a64650836d547d07291a059e86

  • SHA512

    45dce5171772db72bf71fc72dab6feda73995e7009f6b0bb74b2f25d6a5e23284c06c167505d56c79c6334a6e14e2b44b3117a4207f4396d4f71f01b1381ce91

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.207:2121

annapro.linkpc.net.:2121

Mutex

34118051-8385-43c4-bed1-aa9e16db604f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    annapro.linkpc.net.

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-08-14T02:17:37.803675836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    2121

  • default_group

    hip

  • 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

    34118051-8385-43c4-bed1-aa9e16db604f

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    185.140.53.207

  • 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.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New PO 64739 (UK).exe
    "C:\Users\Admin\AppData\Local\Temp\New PO 64739 (UK).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3980
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TqGgKBQek" /XML "C:\Users\Admin\AppData\Local\Temp\tmp158.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4076
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:4092
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:4068

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp158.tmp
      MD5

      4ce3d2fdcbeb33d1d18d1be54142d87c

      SHA1

      453a773951ffc1829fd216757785b9dc6e5dd651

      SHA256

      d8cc45456e4ff43af7475eb33c252fc323a2ea8f64384d0b1f241016b9b968da

      SHA512

      d682f0a4832fc02840dffc6e740700028e51ec5f90ad55ebec6f666ff9db267ec2d7780fc53fa7a2e7af46ee9836b5ccf3ec344f7a5fbfeab50e58dcdb4e7afc

    • memory/3980-1-0x0000000000FE0000-0x0000000000FE1000-memory.dmp
      Filesize

      4KB

    • memory/3980-3-0x0000000005DB0000-0x0000000005DB1000-memory.dmp
      Filesize

      4KB

    • memory/3980-4-0x0000000006350000-0x0000000006351000-memory.dmp
      Filesize

      4KB

    • memory/3980-5-0x0000000005E50000-0x0000000005E51000-memory.dmp
      Filesize

      4KB

    • memory/3980-6-0x0000000005A70000-0x0000000005A71000-memory.dmp
      Filesize

      4KB

    • memory/3980-7-0x0000000005D10000-0x0000000005D11000-memory.dmp
      Filesize

      4KB

    • memory/3980-8-0x0000000005A90000-0x0000000005AA3000-memory.dmp
      Filesize

      76KB

    • memory/3980-9-0x0000000006B10000-0x0000000006B7A000-memory.dmp
      Filesize

      424KB

    • memory/3980-10-0x0000000006B80000-0x0000000006BB5000-memory.dmp
      Filesize

      212KB

    • memory/3980-0-0x0000000073A20000-0x000000007410E000-memory.dmp
      Filesize

      6.9MB

    • memory/4068-15-0x0000000073A20000-0x000000007410E000-memory.dmp
      Filesize

      6.9MB

    • memory/4068-27-0x0000000006940000-0x0000000006946000-memory.dmp
      Filesize

      24KB

    • memory/4068-14-0x000000000041E792-mapping.dmp
    • memory/4068-37-0x0000000006C00000-0x0000000006C01000-memory.dmp
      Filesize

      4KB

    • memory/4068-22-0x0000000005790000-0x0000000005795000-memory.dmp
      Filesize

      20KB

    • memory/4068-23-0x00000000057A0000-0x00000000057B9000-memory.dmp
      Filesize

      100KB

    • memory/4068-24-0x0000000005AA0000-0x0000000005AA3000-memory.dmp
      Filesize

      12KB

    • memory/4068-25-0x00000000067C0000-0x00000000067CD000-memory.dmp
      Filesize

      52KB

    • memory/4068-26-0x00000000067D0000-0x00000000067E5000-memory.dmp
      Filesize

      84KB

    • memory/4068-13-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

    • memory/4068-28-0x0000000006960000-0x000000000696C000-memory.dmp
      Filesize

      48KB

    • memory/4068-29-0x0000000006970000-0x0000000006977000-memory.dmp
      Filesize

      28KB

    • memory/4068-30-0x0000000006980000-0x0000000006986000-memory.dmp
      Filesize

      24KB

    • memory/4068-31-0x0000000006990000-0x000000000699D000-memory.dmp
      Filesize

      52KB

    • memory/4068-32-0x00000000069A0000-0x00000000069A9000-memory.dmp
      Filesize

      36KB

    • memory/4068-33-0x00000000069B0000-0x00000000069BF000-memory.dmp
      Filesize

      60KB

    • memory/4068-34-0x00000000069D0000-0x00000000069DA000-memory.dmp
      Filesize

      40KB

    • memory/4068-35-0x00000000069E0000-0x0000000006A09000-memory.dmp
      Filesize

      164KB

    • memory/4068-36-0x0000000006A20000-0x0000000006A2F000-memory.dmp
      Filesize

      60KB

    • memory/4076-11-0x0000000000000000-mapping.dmp