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Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2025, 01:49

General

  • Target

    46f92ebe290305fbfa65465b24f2c058c3ad05ec6e0858345d00d407efbe1994.exe

  • Size

    416KB

  • MD5

    d8fdfbfd5c63977d3a802fe8b185a61f

  • SHA1

    dcab16d4ee8909794148c357abf2ab45d6d17fff

  • SHA256

    46f92ebe290305fbfa65465b24f2c058c3ad05ec6e0858345d00d407efbe1994

  • SHA512

    0e5ffec28eb71314504a30c8d7c7bbb68a0b7aa79f0181360f9f9f99db434bdc27e581e893ff8b7da7bfbeb700a131f11b3651709655564011580df04ca261e8

  • SSDEEP

    6144:ITNE3ZRrnaBVlvphVxmP+6CiejgcME1cwYfU+va+RU2:ITNYrnE3bm/CiejewY5vX

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 2 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\46f92ebe290305fbfa65465b24f2c058c3ad05ec6e0858345d00d407efbe1994.exe
    "C:\Users\Admin\AppData\Local\Temp\46f92ebe290305fbfa65465b24f2c058c3ad05ec6e0858345d00d407efbe1994.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2192
    • 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:2760
      • 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:2620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    416KB

    MD5

    00ca7a3e1fc5c55ffcfdc878407f719d

    SHA1

    1b5f0e05a942c26a2b7d8994ad70fa08ddb229b8

    SHA256

    1d674abda4b72984bcfa7f53078c50a524862ebf27e9cfc9301c55a4c8318ff5

    SHA512

    241d67fea70984da9de33f832c5b739e1b56a1ecab6d5731cb0b39460b9204f91b427b104ba3e7afea84bc951d50ea72a938f3e7f7c55cbebf5a2c9a09c7c068

  • memory/2192-14-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-1-0x0000000001370000-0x00000000013DE000-memory.dmp

    Filesize

    440KB

  • memory/2192-2-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB

  • memory/2192-3-0x0000000000AC0000-0x0000000000AFC000-memory.dmp

    Filesize

    240KB

  • memory/2192-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

    Filesize

    4KB

  • memory/2620-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2620-32-0x0000000000890000-0x000000000089A000-memory.dmp

    Filesize

    40KB

  • memory/2620-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-27-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-28-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-31-0x0000000000870000-0x000000000088E000-memory.dmp

    Filesize

    120KB

  • memory/2620-22-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-30-0x0000000000780000-0x000000000078A000-memory.dmp

    Filesize

    40KB

  • memory/2620-17-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2760-12-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-13-0x0000000000090000-0x00000000000FE000-memory.dmp

    Filesize

    440KB

  • memory/2760-15-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-33-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB

  • memory/2760-34-0x0000000074E80000-0x000000007556E000-memory.dmp

    Filesize

    6.9MB