Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-10-2022 18:55

General

  • Target

    34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461.exe

  • Size

    569KB

  • MD5

    71d4a646c0eb434d761da6bff2a4d360

  • SHA1

    9dbdf620044a47a866af63197c11e749c067f885

  • SHA256

    34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461

  • SHA512

    561e229d88112adecaec76547740d6f197acb9ab262e7dcc4a365e91c9d5e21adb667a848f7f07b67fc5cbb782d589fd674783ddd335cfbcc5f504de79537d6e

  • SSDEEP

    12288:qRdbPfBY82sEUutQAectXLYXozBUQIP4dSP6ZCwJnwrwFIQ:E5vYUwQAecYozB0A5nwrj

Malware Config

Extracted

Family

nanocore

Version

1.2.2.2

C2

Dres199.ddns.net:59

Mutex

31a52d57-b280-4dc8-8582-23d97140cbb3

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-05-21T16:00:55.188929836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    59

  • 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

    31a52d57-b280-4dc8-8582-23d97140cbb3

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    Dres199.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

    1.2.2.2

  • 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
  • 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 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461.exe
    "C:\Users\Admin\AppData\Local\Temp\34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2016
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Update\Chrome" /XML "C:\Users\Admin\AppData\Local\Temp\aSSSSS.xml"
      2⤵
      • Creates scheduled task(s)
      PID:1288
    • C:\Users\Admin\AppData\Local\Temp\34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461.exe
      "C:\Users\Admin\AppData\Local\Temp\34b29da15099686b06efea5d8c9c5dc82afaaa346c63354df6fb3b6377f21461.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:368

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\aSSSSS.xml
    Filesize

    1KB

    MD5

    96608d6c57dfc4160d4be0390ecf0af6

    SHA1

    e22facf7e1cb539457aa5ac0a6fffac2093263df

    SHA256

    92579c83ea3568cb9b115f19558069c8de6cf03529286f9dd814c963bb0a5cbd

    SHA512

    509bebad98d7c6f492d1485e3b46fb1722a9169e2f7e807b8d8921946aa934025b67f394f521a64531b0223b7baa8922702409b814ac4feb9e00a0e3ce4f2e3a

  • memory/368-61-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-66-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-76-0x0000000074E10000-0x00000000753BB000-memory.dmp
    Filesize

    5.7MB

  • memory/368-58-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-59-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-75-0x0000000074E10000-0x00000000753BB000-memory.dmp
    Filesize

    5.7MB

  • memory/368-63-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-72-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/368-68-0x000000000041E73A-mapping.dmp
  • memory/368-70-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1288-56-0x0000000000000000-mapping.dmp
  • memory/2016-74-0x0000000074E10000-0x00000000753BB000-memory.dmp
    Filesize

    5.7MB

  • memory/2016-54-0x0000000075A71000-0x0000000075A73000-memory.dmp
    Filesize

    8KB

  • memory/2016-55-0x0000000074E10000-0x00000000753BB000-memory.dmp
    Filesize

    5.7MB