Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27-03-2024 01:13

General

  • Target

    e06af978fe18c3d6035be50cc608d9fd.exe

  • Size

    798KB

  • MD5

    e06af978fe18c3d6035be50cc608d9fd

  • SHA1

    69e02c531767fdae4886385ec8169792dd522913

  • SHA256

    2dd6a493c1cf18cba91a42bdb1ea0ac4c008365950e6071e53f3454869437218

  • SHA512

    97a66ddf3dde9f110101ef30595cf89cd0f0acdc0c899ec1baef52103e33d98dbb4dceede7cc03d3d6411f516d53f710ab364d435d19f20263d9253aeca2b670

  • SSDEEP

    12288:J9twg7hF4Sd8cgV6X+/PHK6Jyd51Plc8yV13PO3ZkBdyMLntGgaImkAx5N78:T712cWHLJyX1S7X

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

mec.sytes.net:3259

Mutex

9358a53f-433c-42f5-bd3f-14ae4da528cf

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    mec.sytes.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-04-04T14:41:53.527071936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    3259

  • default_group

    Mine

  • 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

    9358a53f-433c-42f5-bd3f-14ae4da528cf

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    mec.sytes.net

  • 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 computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • 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 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e06af978fe18c3d6035be50cc608d9fd.exe
    "C:\Users\Admin\AppData\Local\Temp\e06af978fe18c3d6035be50cc608d9fd.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4836
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cdYpjGjFZhT" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7FA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:372
    • C:\Users\Admin\AppData\Local\Temp\e06af978fe18c3d6035be50cc608d9fd.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4408

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7FA.tmp
    Filesize

    1KB

    MD5

    982ce00cdf90020b7e7fcac29673ea70

    SHA1

    6f60198c20ec83bde2a0e893d6a6e1873a1e72de

    SHA256

    153e885fc19b1812b57d7caabcab1309be2a9128f8d896c42d7ab8f3a64093f3

    SHA512

    8fd47c21de9443d6b38ee9a2d39148bfb9bf97fe00b0aae032459800738278964bffe950b36c9f22fe479f971058cda105c85ff921abbb11e1290e99ed1708b2

  • memory/4408-12-0x00000000012B0000-0x00000000012C0000-memory.dmp
    Filesize

    64KB

  • memory/4408-15-0x00000000012B0000-0x00000000012C0000-memory.dmp
    Filesize

    64KB

  • memory/4408-18-0x00000000012B0000-0x00000000012C0000-memory.dmp
    Filesize

    64KB

  • memory/4408-17-0x00000000012B0000-0x00000000012C0000-memory.dmp
    Filesize

    64KB

  • memory/4408-16-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4408-8-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/4408-14-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4408-11-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4836-0-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4836-10-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4836-2-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB

  • memory/4836-1-0x0000000000DB0000-0x0000000000DC0000-memory.dmp
    Filesize

    64KB

  • memory/4836-4-0x0000000000DB0000-0x0000000000DC0000-memory.dmp
    Filesize

    64KB

  • memory/4836-3-0x0000000074780000-0x0000000074D31000-memory.dmp
    Filesize

    5.7MB