Overview

overview

10

Static

static

d7cb77d326...4b.exe

windows7-x64

10

d7cb77d326...4b.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    156s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/11/2022, 23:49

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    d7cb77d326fe4234083d91674f2cfae0aacee10c93554d4ca2565ecbe4e39c4b.exe
  • Size 1.3MB
  • Sample221126-3vedysdg98
  • SHA256 d7cb77d326fe4234083d91674f2cfae0aacee10c93554d4ca2565ecbe4e39c4b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

  • nanocore

Version

  • 1.2.2.0

C2

  • apananco.no-ip.biz:1177

  • 5.254.112.21:1177

Mutex

  • 0e1fb9df-1b4f-4517-a8e6-9035c916355d

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    5.254.112.21

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-01-24T14:36:48.256723236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    1177

  • default_group

    LightCore

  • 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

    0e1fb9df-1b4f-4517-a8e6-9035c916355d

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    apananco.no-ip.biz

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d7cb77d326fe4234083d91674f2cfae0aacee10c93554d4ca2565ecbe4e39c4b.exe
    "C:\Users\Admin\AppData\Local\Temp\d7cb77d326fe4234083d91674f2cfae0aacee10c93554d4ca2565ecbe4e39c4b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4216
    • C:\Users\Admin\w4kgoi6994\iyrf.exe
      "C:\Users\Admin\w4kgoi6994\iyrf.exe" xqilbqxcfsa
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4892
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2508

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        psjr.FCK
        • Path C:\Users\Admin\W4KGOI~1\psjr.FCK
        • Size 475KB
        • SHA256 64fb9b94c9cc1224f232371fd790ac6ff92cc216e8828d5701acf37415c03222
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        rzzadrap.OWJ
        • Path C:\Users\Admin\W4KGOI~1\rzzadrap.OWJ
        • Size 87B
        • SHA256 01e4a41502a51e5afaa3ca4d262359c73bc04a23a15479fe60b727e105da7cf2
        • MD5 SHA1 SHA512
        Submit Download

        iyrf.exe
        • Path C:\Users\Admin\w4kgoi6994\iyrf.exe
        • Size 732KB
        • SHA256 fb73a819b37523126c7708a1d06f3b8825fa60c926154ab2d511ba668f49dc4b
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        iyrf.exe
        • Path C:\Users\Admin\w4kgoi6994\iyrf.exe
        • Size 732KB
        • SHA256 fb73a819b37523126c7708a1d06f3b8825fa60c926154ab2d511ba668f49dc4b
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        xqilbqxcfsa
        • Path C:\Users\Admin\w4kgoi6994\xqilbqxcfsa
        • Size 674.6MB
        • SHA256 e56b1f8e00007744395262afb4289d054b3a39b1f313e1a9461032492d44f16e
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        memory/2508-139-0x0000000001030000-0x00000000010AC000-memory.dmp
        Download

        memory/2508-140-0x0000000005A70000-0x0000000006014000-memory.dmp
        Download

        memory/2508-141-0x0000000005560000-0x00000000055F2000-memory.dmp
        Download

        memory/2508-142-0x00000000056A0000-0x000000000573C000-memory.dmp
        Download

        memory/2508-143-0x0000000005610000-0x000000000561A000-memory.dmp
        Download