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Analysis

  • max time kernel
    50s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    26/09/2024, 19:52

General

  • Target

    5662fcdd92b61586c76444eff1eb05941748fc399e2b2dd2daf35f1a8e47217d.exe

  • Size

    413KB

  • MD5

    0f7528228f5f1f403241747bd489b283

  • SHA1

    d5448b701a5350e87f9c2e2e3a142af4e85c307b

  • SHA256

    5662fcdd92b61586c76444eff1eb05941748fc399e2b2dd2daf35f1a8e47217d

  • SHA512

    a010752dd12a3af64475e08235c49ec9db433da0fbbb61429e5da45a4582458a070160011063de565b4788cac52032c3e507eee3757774021972d1ca40c2d8a8

  • SSDEEP

    6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RUm:ITNYrnE3bm/CiejewY5vl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

[email protected]:46218

178.32.224.116:46218

Mutex

4af74541-e3f1-469c-8af7-efe4071b81cf

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    178.32.224.116

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2018-07-28T12:59:38.488799236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    46218

  • default_group

    tourex

  • 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

    4af74541-e3f1-469c-8af7-efe4071b81cf

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    [email protected]

  • primary_dns_server

  • 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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5662fcdd92b61586c76444eff1eb05941748fc399e2b2dd2daf35f1a8e47217d.exe
    "C:\Users\Admin\AppData\Local\Temp\5662fcdd92b61586c76444eff1eb05941748fc399e2b2dd2daf35f1a8e47217d.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2488
    • C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe
      "C:\Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2472
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
        3⤵
        • Checks whether UAC is enabled
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2672

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Roaming\c5e4gxfvd4v\ximo2ubzn1i.exe

    Filesize

    413KB

    MD5

    a496546924c4bcbf30723866fa3943eb

    SHA1

    5549480cca7600692b3b8ad8ba921ff4997dd391

    SHA256

    afef6ea8e5237d011bfc510cc2ff0ccd2b0a8baa70515a0dacd26e6c7fb1665a

    SHA512

    6fa76742d81474ae36dcc9a31b8ad5d124f0ae5298420e6da9665b9a0e4ac50b1513259dc87206d46ee7a5498ba60c0fb77063d10ef1b88e94406162c4d4b166

  • memory/2472-35-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2472-13-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2472-14-0x0000000000040000-0x00000000000AE000-memory.dmp

    Filesize

    440KB

  • memory/2472-15-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2472-36-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2488-1-0x0000000000B80000-0x0000000000BEE000-memory.dmp

    Filesize

    440KB

  • memory/2488-2-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2488-3-0x0000000000AE0000-0x0000000000B1C000-memory.dmp

    Filesize

    240KB

  • memory/2488-12-0x0000000074A00000-0x00000000750EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2488-0-0x0000000074A0E000-0x0000000074A0F000-memory.dmp

    Filesize

    4KB

  • memory/2672-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-24-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-21-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-17-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-29-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-30-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2672-32-0x00000000003C0000-0x00000000003CA000-memory.dmp

    Filesize

    40KB

  • memory/2672-33-0x00000000003D0000-0x00000000003EE000-memory.dmp

    Filesize

    120KB

  • memory/2672-34-0x00000000003F0000-0x00000000003FA000-memory.dmp

    Filesize

    40KB

  • memory/2672-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2672-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB