Analysis

  • max time kernel
    119s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    01-11-2024 05:18

General

  • Target

    8e2827146c4c433affba78c88fd685db.exe

  • Size

    758KB

  • MD5

    8e2827146c4c433affba78c88fd685db

  • SHA1

    de632114a70a9ad4b16ed686e48477f398531ae0

  • SHA256

    058e2c02b8cfb93b480ea8cfac08e967b39631a579256ebee27fb7472194c1ea

  • SHA512

    ba45a34ecb7d176392c43cd8b80d8181e77f1cc6536459163439a4456389a6208e053bc6a449f7974595d44b69a269833958bfe1ede7498f31538b84ddbff151

  • SSDEEP

    12288:fn9InteYPjOFGGCA2ythZoESN0vXMgmW3oSrnvuiYZftZvskj2/Q4AyrrRPdh:fEPtpy/2ESNimW3oovZYB2o4JPd

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\8e2827146c4c433affba78c88fd685db.exe
    "C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1928
    • 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\8e2827146c4c433affba78c88fd685db.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1312
    • C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.exe
      "C:\Users\Admin\AppData\Local\Temp\8e2827146c4c433affba78c88fd685db.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:2908
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBB4.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2864
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SCSI Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC32.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2516

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpBB4.tmp

    Filesize

    1KB

    MD5

    08c69c4c90c9dc132cca5b405f300c6a

    SHA1

    4e3f54b70e448a400880101e1068e1fbeeefa624

    SHA256

    4074632002d0a339832ce7dee2cca7c9ca6b0fe4405a43cd971decb81541701f

    SHA512

    7a7b300706631b455fa811aa4a868ad72cd3b4605928e22eeafbc126f6901219ae8d3b059fd363c5bf678c8b858b6362ca8140cbb929c204d269c233d85e09f1

  • C:\Users\Admin\AppData\Local\Temp\tmpC32.tmp

    Filesize

    1KB

    MD5

    9a559f229be0944bc3dc813cde333f50

    SHA1

    0e97c97eea032b499ff060e799581e32beeceb09

    SHA256

    a63d853679aa655cced3b62a10855c56f9efd9b50770738b408d728008f73330

    SHA512

    4cbb2f77283500e86ecf79fd2cbd31d10c3af2fcf6c9a557ee0b1edead229dc07d63a5030b60df57458d52ef8c2a42ec199d2d4cdca387400d047df25b593c68

  • memory/1928-26-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/1928-1-0x0000000001010000-0x00000000010D4000-memory.dmp

    Filesize

    784KB

  • memory/1928-2-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/1928-3-0x0000000000900000-0x000000000091C000-memory.dmp

    Filesize

    112KB

  • memory/1928-4-0x000000007410E000-0x000000007410F000-memory.dmp

    Filesize

    4KB

  • memory/1928-5-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/1928-6-0x00000000003E0000-0x000000000045A000-memory.dmp

    Filesize

    488KB

  • memory/1928-0-0x000000007410E000-0x000000007410F000-memory.dmp

    Filesize

    4KB

  • memory/2908-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-39-0x0000000000690000-0x00000000006A2000-memory.dmp

    Filesize

    72KB

  • memory/2908-13-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-9-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-7-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-23-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2908-22-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2908-19-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-21-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2908-34-0x0000000000490000-0x000000000049A000-memory.dmp

    Filesize

    40KB

  • memory/2908-35-0x00000000004A0000-0x00000000004BE000-memory.dmp

    Filesize

    120KB

  • memory/2908-36-0x00000000004C0000-0x00000000004CA000-memory.dmp

    Filesize

    40KB

  • memory/2908-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2908-40-0x0000000000790000-0x00000000007AA000-memory.dmp

    Filesize

    104KB

  • memory/2908-41-0x0000000000C30000-0x0000000000C3E000-memory.dmp

    Filesize

    56KB

  • memory/2908-42-0x0000000000C40000-0x0000000000C52000-memory.dmp

    Filesize

    72KB

  • memory/2908-44-0x0000000000ED0000-0x0000000000EDE000-memory.dmp

    Filesize

    56KB

  • memory/2908-43-0x0000000000EC0000-0x0000000000ECC000-memory.dmp

    Filesize

    48KB

  • memory/2908-45-0x0000000000F20000-0x0000000000F34000-memory.dmp

    Filesize

    80KB

  • memory/2908-46-0x0000000000F30000-0x0000000000F40000-memory.dmp

    Filesize

    64KB

  • memory/2908-47-0x0000000000F40000-0x0000000000F54000-memory.dmp

    Filesize

    80KB

  • memory/2908-48-0x0000000000F50000-0x0000000000F5E000-memory.dmp

    Filesize

    56KB

  • memory/2908-49-0x00000000047B0000-0x00000000047DE000-memory.dmp

    Filesize

    184KB

  • memory/2908-50-0x0000000000FB0000-0x0000000000FC4000-memory.dmp

    Filesize

    80KB

  • memory/2908-52-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB

  • memory/2908-53-0x0000000074100000-0x00000000747EE000-memory.dmp

    Filesize

    6.9MB