Analysis

  • max time kernel
    118s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2024 10:19

General

  • Target

    ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd.exe

  • Size

    300KB

  • MD5

    6fec759e7b0153aef90778d936d4ec15

  • SHA1

    89e8757a82655f5c5257bfdd0cd94723c021b13e

  • SHA256

    ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd

  • SHA512

    a70a39f0ebb2de121cb64bb43d351a416c86a0222c8176afa4662efd2e734390f12ecd1cf5adc2bad04818447c913c79758037f847c3559609028ab78e8c39fc

  • SSDEEP

    6144:wBlL/cBTySWgMMtHXaqILNcK/GZbGFwCHoLV13fRW/:CeASWgMMI/OGmEQDRW/

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

178.170.138.163:5626

Mutex

01f9d977-6605-495e-941a-753d3cd6dc0b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-02-27T13:54:38.807349736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5626

  • default_group

    4Maticross.

  • 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

    01f9d977-6605-495e-941a-753d3cd6dc0b

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    178.170.138.163

  • 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.

  • Nanocore family
  • Loads dropped DLL 1 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd.exe
    "C:\Users\Admin\AppData\Local\Temp\ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2332
    • C:\Users\Admin\AppData\Local\Temp\ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd.exe
      "C:\Users\Admin\AppData\Local\Temp\ce7b5266dc9158f1fdd178ee33e15f507f557db955e4959989a36c2639be47fd.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2300

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nse31.tmp\hxgll.dll

    Filesize

    49KB

    MD5

    6aee0715f2773579719c70bcbd2eddaf

    SHA1

    1e378c3e71b2184ce3b0fe97176f9b8c0d3d04df

    SHA256

    3479563cfd7304bb2d59c5b0ce3ec754a0ac915d147a73f8f577e4a5f4c6dcb7

    SHA512

    4aed1dd163ca3454dc6e327a6a2feebae1cfd2da632ec20fca98c85825fc838ae3e318528b5774e65008fd1bcbabb1d0bcf29a1855a5498d555644876521813e

  • memory/2300-9-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2300-11-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2300-12-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2332-7-0x00000000747DC000-0x00000000747DE000-memory.dmp

    Filesize

    8KB