Analysis

  • max time kernel
    121s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    08-11-2024 04:03

General

  • Target

    e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe

  • Size

    831KB

  • MD5

    f9f3ee35f62eba494f4f755850617a85

  • SHA1

    2f01785e036cb476d67249bef9881b0116912309

  • SHA256

    e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870

  • SHA512

    6a44351b520b9a6869b695d1fe31aadd73dc099358ada5ace0882d883b94ff83ae990b247fb68f9cbb09f12f8bacc3202e5f4a0c90a4c2bad218254d263a97e9

  • SSDEEP

    24576:zq0qvumN3gUCTcpVfFBbsuYqwnB5t7UG4DL:zqwmtgUZpVgpqwn17eDL

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

66.63.187.113:1664

Mutex

a376f716-2f77-4943-a431-3a3bcb53b7c0

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    66.63.187.113

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-08-05T03:49:33.827385136Z

  • 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

    1664

  • default_group

    CAT

  • 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

    a376f716-2f77-4943-a431-3a3bcb53b7c0

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    66.63.187.113

  • 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.

  • Nanocore family
  • 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\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe
    "C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2816
    • 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\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2668
    • C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.exe
      "C:\Users\Admin\AppData\Local\Temp\e49189557147abb38b584bb167b436947cde7bcea7ab44815ebc44c4f21e1870.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:2688
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD03A.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1504
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD0B8.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2908

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD03A.tmp

    Filesize

    1KB

    MD5

    7a5b2999f1100d2c6783bba14fbd9c1a

    SHA1

    5823601acfe4e5da055eb2a42364b85cb894ce2f

    SHA256

    f41bc60f4470994c3841458440cdeaf105afea2b5984d8742f8da4375babf2c3

    SHA512

    cee623fe27d8b4ad31b53e1587194b5b3316632f05572033c538db6b21cc2ce73f128bd8eb6476e355650d6ffaf9a7c4aeda4e71f3c8bfb7bacb07875428679e

  • C:\Users\Admin\AppData\Local\Temp\tmpD0B8.tmp

    Filesize

    1KB

    MD5

    bd110f9fc6c1a842f1d9b269010b0611

    SHA1

    ef71c062902602faef9b66dcd1cfc9fe5baaf389

    SHA256

    8135c4e4eeaa741f752c0ab8f4ee33e3bb8a0cac5923812234f2e5177d50eb5b

    SHA512

    b8a7943a3126880b26407800bbdad5402c5b0e2aa106e7dbbb35d0cb145ca9de114401573a6aa66042a2e13674cfbcc2981d66b813f9b923fff5302210afba1f

  • memory/2688-39-0x00000000022D0000-0x00000000022DE000-memory.dmp

    Filesize

    56KB

  • memory/2688-45-0x0000000004C70000-0x0000000004C7E000-memory.dmp

    Filesize

    56KB

  • memory/2688-47-0x0000000004D00000-0x0000000004D14000-memory.dmp

    Filesize

    80KB

  • memory/2688-46-0x0000000004C80000-0x0000000004CAE000-memory.dmp

    Filesize

    184KB

  • memory/2688-44-0x0000000004570000-0x0000000004584000-memory.dmp

    Filesize

    80KB

  • memory/2688-7-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-42-0x0000000002350000-0x0000000002364000-memory.dmp

    Filesize

    80KB

  • memory/2688-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2688-8-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-9-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-17-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-21-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2688-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-15-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-49-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2688-43-0x0000000002360000-0x0000000002370000-memory.dmp

    Filesize

    64KB

  • memory/2688-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2688-32-0x0000000000670000-0x000000000067A000-memory.dmp

    Filesize

    40KB

  • memory/2688-33-0x00000000007F0000-0x000000000080E000-memory.dmp

    Filesize

    120KB

  • memory/2688-34-0x0000000000750000-0x000000000075A000-memory.dmp

    Filesize

    40KB

  • memory/2688-37-0x0000000000A00000-0x0000000000A12000-memory.dmp

    Filesize

    72KB

  • memory/2688-38-0x0000000002170000-0x000000000218A000-memory.dmp

    Filesize

    104KB

  • memory/2688-40-0x00000000022E0000-0x00000000022F2000-memory.dmp

    Filesize

    72KB

  • memory/2688-41-0x0000000002300000-0x000000000230E000-memory.dmp

    Filesize

    56KB

  • memory/2816-0-0x0000000073C3E000-0x0000000073C3F000-memory.dmp

    Filesize

    4KB

  • memory/2816-3-0x0000000073C3E000-0x0000000073C3F000-memory.dmp

    Filesize

    4KB

  • memory/2816-1-0x0000000000A20000-0x0000000000AF6000-memory.dmp

    Filesize

    856KB

  • memory/2816-6-0x00000000008F0000-0x000000000096A000-memory.dmp

    Filesize

    488KB

  • memory/2816-5-0x00000000009B0000-0x00000000009CC000-memory.dmp

    Filesize

    112KB

  • memory/2816-2-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2816-4-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB

  • memory/2816-22-0x0000000073C30000-0x000000007431E000-memory.dmp

    Filesize

    6.9MB