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Analysis

  • max time kernel
    94s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-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.

  • 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 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 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe
    "C:\Users\Admin\AppData\Local\Temp\18d78dbc4fbda0d58ccae4aa8840e560.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3520
    • 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:736
    • 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:3572
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD8BC.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:3824
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "WPA Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDEA9.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1604

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\18d78dbc4fbda0d58ccae4aa8840e560.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_itkiwzsf.f3t.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpD8BC.tmp

    Filesize

    1KB

    MD5

    a70c3b8a313c9b78ab56fe2e9e899786

    SHA1

    497d5c359f2cb18cc4e16b4f160b372022ae958c

    SHA256

    d6df7fedbe97712b87fa45d550e0e2f14967ada39480898b7b8b8d5a254f4d9c

    SHA512

    9042508d38af9f2191f13d839f43d1ceef3d72bff804bb0e5a1afa0321f0a2a9fa795c76618cc3447b2cb5f81f365870f6b625bb5a9ef056e1b3cae3e7ec21c6

  • C:\Users\Admin\AppData\Local\Temp\tmpDEA9.tmp

    Filesize

    1KB

    MD5

    4365cd1ae65923a319ef2683a45891fe

    SHA1

    85dde233112660e31c53884aedfbad52e4547e09

    SHA256

    84b6ce4ba26fa6fb57fa70b9ad191f7c42c71e259897955b5d514385bcd91b58

    SHA512

    d1bd24f504c5c2ecaa3ae98268ccc2e400ea3e16980c6caf394eadf7738225e4d5578fbe62bbe2de3fe0cb56a0d76bb3fc84cef3b9cd2f3d8be6d0becefdc035

  • memory/736-46-0x0000000005EA0000-0x0000000005EEC000-memory.dmp

    Filesize

    304KB

  • memory/736-43-0x0000000005E50000-0x0000000005E6E000-memory.dmp

    Filesize

    120KB

  • memory/736-72-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/736-69-0x00000000074A0000-0x00000000074A8000-memory.dmp

    Filesize

    32KB

  • memory/736-68-0x00000000074C0000-0x00000000074DA000-memory.dmp

    Filesize

    104KB

  • memory/736-67-0x00000000073C0000-0x00000000073D4000-memory.dmp

    Filesize

    80KB

  • memory/736-66-0x00000000073B0000-0x00000000073BE000-memory.dmp

    Filesize

    56KB

  • memory/736-47-0x0000000006E30000-0x0000000006E62000-memory.dmp

    Filesize

    200KB

  • memory/736-64-0x0000000007400000-0x0000000007496000-memory.dmp

    Filesize

    600KB

  • memory/736-63-0x00000000071F0000-0x00000000071FA000-memory.dmp

    Filesize

    40KB

  • memory/736-62-0x0000000007180000-0x000000000719A000-memory.dmp

    Filesize

    104KB

  • memory/736-18-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/736-17-0x0000000005060000-0x0000000005688000-memory.dmp

    Filesize

    6.2MB

  • memory/736-19-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/736-20-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/736-16-0x0000000002560000-0x0000000002596000-memory.dmp

    Filesize

    216KB

  • memory/736-61-0x00000000077C0000-0x0000000007E3A000-memory.dmp

    Filesize

    6.5MB

  • memory/736-25-0x0000000004F90000-0x0000000004FB2000-memory.dmp

    Filesize

    136KB

  • memory/736-27-0x0000000005820000-0x0000000005886000-memory.dmp

    Filesize

    408KB

  • memory/736-26-0x0000000005700000-0x0000000005766000-memory.dmp

    Filesize

    408KB

  • memory/736-60-0x0000000007070000-0x0000000007113000-memory.dmp

    Filesize

    652KB

  • memory/736-59-0x0000000006430000-0x000000000644E000-memory.dmp

    Filesize

    120KB

  • memory/736-37-0x0000000005890000-0x0000000005BE4000-memory.dmp

    Filesize

    3.3MB

  • memory/736-65-0x0000000007380000-0x0000000007391000-memory.dmp

    Filesize

    68KB

  • memory/736-49-0x0000000070B60000-0x0000000070BAC000-memory.dmp

    Filesize

    304KB

  • memory/3520-5-0x0000000004DE0000-0x0000000004DEA000-memory.dmp

    Filesize

    40KB

  • memory/3520-4-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3520-0-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

    Filesize

    4KB

  • memory/3520-6-0x0000000005060000-0x0000000005070000-memory.dmp

    Filesize

    64KB

  • memory/3520-1-0x0000000000400000-0x000000000049A000-memory.dmp

    Filesize

    616KB

  • memory/3520-7-0x0000000074F2E000-0x0000000074F2F000-memory.dmp

    Filesize

    4KB

  • memory/3520-2-0x00000000051D0000-0x0000000005774000-memory.dmp

    Filesize

    5.6MB

  • memory/3520-3-0x0000000004D20000-0x0000000004DB2000-memory.dmp

    Filesize

    584KB

  • memory/3520-8-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3520-15-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3520-9-0x00000000067B0000-0x000000000682A000-memory.dmp

    Filesize

    488KB

  • memory/3520-10-0x0000000008E90000-0x0000000008F2C000-memory.dmp

    Filesize

    624KB

  • memory/3572-21-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3572-77-0x0000000006F40000-0x0000000006F4E000-memory.dmp

    Filesize

    56KB

  • memory/3572-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3572-45-0x0000000006570000-0x000000000657A000-memory.dmp

    Filesize

    40KB

  • memory/3572-44-0x0000000005650000-0x000000000566E000-memory.dmp

    Filesize

    120KB

  • memory/3572-42-0x0000000005520000-0x000000000552A000-memory.dmp

    Filesize

    40KB

  • memory/3572-73-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3572-75-0x0000000006F00000-0x0000000006F12000-memory.dmp

    Filesize

    72KB

  • memory/3572-76-0x0000000006F10000-0x0000000006F2A000-memory.dmp

    Filesize

    104KB

  • memory/3572-14-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB

  • memory/3572-78-0x0000000006F50000-0x0000000006F62000-memory.dmp

    Filesize

    72KB

  • memory/3572-79-0x0000000006F60000-0x0000000006F6E000-memory.dmp

    Filesize

    56KB

  • memory/3572-80-0x0000000006F70000-0x0000000006F7C000-memory.dmp

    Filesize

    48KB

  • memory/3572-81-0x0000000006F80000-0x0000000006F94000-memory.dmp

    Filesize

    80KB

  • memory/3572-83-0x0000000006FB0000-0x0000000006FC4000-memory.dmp

    Filesize

    80KB

  • memory/3572-82-0x0000000006F90000-0x0000000006FA0000-memory.dmp

    Filesize

    64KB

  • memory/3572-85-0x0000000006FE0000-0x000000000700E000-memory.dmp

    Filesize

    184KB

  • memory/3572-84-0x0000000006FD0000-0x0000000006FDE000-memory.dmp

    Filesize

    56KB

  • memory/3572-86-0x0000000007010000-0x0000000007024000-memory.dmp

    Filesize

    80KB

  • memory/3572-88-0x0000000074F20000-0x00000000756D0000-memory.dmp

    Filesize

    7.7MB