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Analysis

  • max time kernel
    121s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    22/09/2024, 13:06

General

  • Target

    18d78dbc4fbda0d58ccae4aa8840e560.exe

  • Size

    593KB

  • MD5

    18d78dbc4fbda0d58ccae4aa8840e560

  • SHA1

    2951d8f45b9e1342beab4c8674bcce5672da1558

  • SHA256

    3af587731a4050cb520beeb1b67fd2d0654db2edf3968945419218b85461b568

  • SHA512

    2f8693e91b398e07998a6645f4790a9b61d1f75ebd07eb8d16cca7598594cf109bf535fb693d61bbc713237cfb2132285674e2cb8d73cde3a11a9249887e6f0b

  • SSDEEP

    12288:NHiwc0mNSj83IvhRNi/XAOtqkLmximdS8Irlmo5+Vh7kPzft7:NCwcSj8YvhRoAOAkLx4O+V9Sl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

l3g3nd.sytes.net:3132

127.0.0.1:3132

Mutex

84ab735e-1aa1-40a6-9462-ae2224636060

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-06-28T14:22:27.694177336Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    3132

  • default_group

    l3g3nd

  • 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

    84ab735e-1aa1-40a6-9462-ae2224636060

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    l3g3nd.sytes.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe
    "C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3020
    • C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe
      "C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7CFD.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2564
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DOS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp7E55.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2148

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp7CFD.tmp

    Filesize

    1KB

    MD5

    a70c3b8a313c9b78ab56fe2e9e899786

    SHA1

    497d5c359f2cb18cc4e16b4f160b372022ae958c

    SHA256

    d6df7fedbe97712b87fa45d550e0e2f14967ada39480898b7b8b8d5a254f4d9c

    SHA512

    9042508d38af9f2191f13d839f43d1ceef3d72bff804bb0e5a1afa0321f0a2a9fa795c76618cc3447b2cb5f81f365870f6b625bb5a9ef056e1b3cae3e7ec21c6

  • C:\Users\Admin\AppData\Local\Temp\tmp7E55.tmp

    Filesize

    1KB

    MD5

    8f5713b14cee3089852f6c8d2a7a7d57

    SHA1

    8bffbea05715c6434ad593cce8a2c737f80ff788

    SHA256

    ab3ce102242c3144f87bcbfe83984a478821cd09e62c0e5211b2ab37dde02d2c

    SHA512

    82bd2378c2d6bb34a1ad3f2d26bfea583fc8403691bed6668521ba3e8bc7bdbdf142f872ddbc8e5251550f47c9bbee4eb3d0d6096f80d85259082cf68a454c72

  • memory/2552-37-0x0000000000AB0000-0x0000000000ABE000-memory.dmp

    Filesize

    56KB

  • memory/2552-30-0x00000000005E0000-0x00000000005EA000-memory.dmp

    Filesize

    40KB

  • memory/2552-48-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2552-46-0x0000000004330000-0x0000000004344000-memory.dmp

    Filesize

    80KB

  • memory/2552-45-0x0000000004300000-0x000000000432E000-memory.dmp

    Filesize

    184KB

  • memory/2552-7-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-14-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-19-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2552-8-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2552-9-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2552-44-0x00000000021A0000-0x00000000021AE000-memory.dmp

    Filesize

    56KB

  • memory/2552-43-0x0000000002190000-0x00000000021A4000-memory.dmp

    Filesize

    80KB

  • memory/2552-42-0x0000000000C60000-0x0000000000C70000-memory.dmp

    Filesize

    64KB

  • memory/2552-31-0x00000000005F0000-0x000000000060E000-memory.dmp

    Filesize

    120KB

  • memory/2552-41-0x0000000000C50000-0x0000000000C64000-memory.dmp

    Filesize

    80KB

  • memory/2552-32-0x0000000000610000-0x000000000061A000-memory.dmp

    Filesize

    40KB

  • memory/2552-35-0x0000000000680000-0x0000000000692000-memory.dmp

    Filesize

    72KB

  • memory/2552-36-0x0000000000690000-0x00000000006AA000-memory.dmp

    Filesize

    104KB

  • memory/2552-40-0x0000000000C40000-0x0000000000C4C000-memory.dmp

    Filesize

    48KB

  • memory/2552-38-0x0000000000BE0000-0x0000000000BF2000-memory.dmp

    Filesize

    72KB

  • memory/2552-39-0x0000000000BF0000-0x0000000000BFE000-memory.dmp

    Filesize

    56KB

  • memory/2728-0-0x000000007441E000-0x000000007441F000-memory.dmp

    Filesize

    4KB

  • memory/2728-1-0x0000000000CB0000-0x0000000000D4A000-memory.dmp

    Filesize

    616KB

  • memory/2728-3-0x0000000000260000-0x0000000000270000-memory.dmp

    Filesize

    64KB

  • memory/2728-2-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-20-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-6-0x00000000050E0000-0x000000000515A000-memory.dmp

    Filesize

    488KB

  • memory/2728-5-0x0000000074410000-0x0000000074AFE000-memory.dmp

    Filesize

    6.9MB

  • memory/2728-4-0x000000007441E000-0x000000007441F000-memory.dmp

    Filesize

    4KB