Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    20-10-2022 15:06

General

  • Target

    3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680.exe

  • Size

    564KB

  • MD5

    5d343626b9b3acc8d0909dd5c9027c7b

  • SHA1

    9f79a33a9b694ef7de35a4a46961a23d53f342ba

  • SHA256

    3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680

  • SHA512

    240e8a6a8a83f4c75eebb2fbd4570074a36d7bf1f33e96396794506b219f981d3cc93d0397e3edee78a80025865ae976b680a490791ea758a16a7239ab062800

  • SSDEEP

    6144:e/OpKaYXmUBLGvE5ION4mKeFz4T4LtnOkufi2r2zdxNO38D:osaVGv1QuAsT0tOkufi

Malware Config

Extracted

Family

nanocore

Version

1.2.2.2

C2

administrator.mooo.com:58514

127.0.0.1:58514

Mutex

65023734-e744-411f-81b2-697ff5f170d7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-07-01T14:40:46.020212136Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    58514

  • 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

    65023734-e744-411f-81b2-697ff5f170d7

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    administrator.mooo.com

  • 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

    1.2.2.2

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Uses the VBS compiler for execution 1 TTPs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 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 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680.exe
    "C:\Users\Admin\AppData\Local\Temp\3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680.exe
      "C:\Users\Admin\AppData\Local\Temp\3954904372c0dcdeb89e2b4dff357d6df058dc04dd402b131b26bcf81e566680.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious use of WriteProcessMemory
      PID:1804
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "AGP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC811.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1324
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -C:\Users\Admin\AppData\Roaming\vIXtKRzHJkl\svchost.exe
      2⤵
      • Suspicious use of SetWindowsHookEx
      PID:1780

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpC811.tmp

    Filesize

    1KB

    MD5

    b0585f98b96a515b9ce56df68f15083a

    SHA1

    af4ca7fa9010c12c11c347fcf35e4b01b1edf083

    SHA256

    ba85e3e4fadce8d280a25316508b27d6e7d432d8b0e759a1e5b3de9ada3a2767

    SHA512

    e1a11fa7dec046f5d2db3791e265280b36232324479dcf7c187449342e909e487a1c410db1b174043173034e1d1395d196e68a5da15a546dcf793ae6df383bcc

  • memory/1324-84-0x0000000000000000-mapping.dmp

  • memory/1720-54-0x00000000757A1000-0x00000000757A3000-memory.dmp

    Filesize

    8KB

  • memory/1720-55-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1720-56-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1780-77-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-72-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-83-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-79-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-76-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-74-0x00000000004055E0-mapping.dmp

  • memory/1780-73-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-70-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1780-71-0x0000000000400000-0x0000000000407000-memory.dmp

    Filesize

    28KB

  • memory/1804-67-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-69-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1804-61-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-65-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-57-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-78-0x00000000749D0000-0x0000000074F7B000-memory.dmp

    Filesize

    5.7MB

  • memory/1804-63-0x000000000041E73A-mapping.dmp

  • memory/1804-62-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-60-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB

  • memory/1804-58-0x0000000000400000-0x0000000000424000-memory.dmp

    Filesize

    144KB