Analysis

  • max time kernel
    111s
  • max time network
    115s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24/01/2025, 12:33

General

  • Target

    e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe

  • Size

    416KB

  • MD5

    7733ac590c5acfdd2d38ccff32e74850

  • SHA1

    2bed655b8239f732cae231eac56aaa62d22aae67

  • SHA256

    e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15

  • SHA512

    bebbd9c6be29344b9f0aabec73b88b665c84bb6a6d8ff9a0dbbbc96318e9140c59b7f68390089ef2a19ea5e933e46edc512a4f561e8cc894b2012b200d88730b

  • SSDEEP

    6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU7k:ITNYrnE3bm/CiejewY5vH

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.

  • Nanocore family
  • 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\e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe
    "C:\Users\Admin\AppData\Local\Temp\e4bc39fba3615dfb69368e4c05c6c64d788f38b55aa17894054f9028e1d32f15N.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1228
    • 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:2744
      • 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:2852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    416KB

    MD5

    d99e27245030d3299ae33fdb58a53015

    SHA1

    8c438f0f7c9f73bc13f80dc2babba3694e5e24d3

    SHA256

    74a8f221c8e399571e9d13adcf68cdf568c1af3903571518db9609d72ea3b9be

    SHA512

    52573d37bd4beea51c8c3f05540dd9ab982c6b38dc4d32e659b753fd9e621f87dc297a59d2ef906c8d6bdf7f318d2444d3548de01f12a9caeae4091fa5327894

  • memory/1228-1-0x00000000008E0000-0x000000000094E000-memory.dmp

    Filesize

    440KB

  • memory/1228-2-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/1228-3-0x00000000042B0000-0x00000000042EC000-memory.dmp

    Filesize

    240KB

  • memory/1228-15-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/1228-0-0x000000007417E000-0x000000007417F000-memory.dmp

    Filesize

    4KB

  • memory/2744-33-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/2744-12-0x00000000001E0000-0x000000000024E000-memory.dmp

    Filesize

    440KB

  • memory/2744-13-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/2744-14-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/2744-34-0x0000000074170000-0x000000007485E000-memory.dmp

    Filesize

    6.9MB

  • memory/2852-17-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2852-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-27-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-30-0x00000000007F0000-0x00000000007FA000-memory.dmp

    Filesize

    40KB

  • memory/2852-31-0x0000000000910000-0x000000000092E000-memory.dmp

    Filesize

    120KB

  • memory/2852-32-0x0000000000800000-0x000000000080A000-memory.dmp

    Filesize

    40KB

  • memory/2852-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2852-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB