Analysis

  • max time kernel
    3s
  • max time network
    9s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-10-2022 06:53

General

  • Target

    d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd.exe

  • Size

    260KB

  • MD5

    13e5935830e4f7f48ab7001db62fbfc5

  • SHA1

    1db29aab8f5fbce5b6d8e0bc2bb1822dbe92c291

  • SHA256

    d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd

  • SHA512

    14202d28efe80e73f2cd3426db06789f83efae68ee7afbb4d03591e7a9ae067510ef75e714fcc11aa0bd7679927ff850272fbaecb5b2a244ef30103d13bcb840

  • SSDEEP

    6144:Z846u8xL3My6AfbfMSyQ2/wFf6T15wENO8ogXB:Z846umL8y6NSyV/h6GX

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

joseph2.duckdns.org:1609

127.0.0.1:1609

Mutex

658e5d1b-480c-4f3f-b8ef-d0d9c9302a1b

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2017-07-27T00:07:13.088381636Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1609

  • default_group

    Default

  • 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

    658e5d1b-480c-4f3f-b8ef-d0d9c9302a1b

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    joseph2.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • 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.

  • 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
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd.exe
    "C:\Users\Admin\AppData\Local\Temp\d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd.exe
      "C:\Users\Admin\AppData\Local\Temp\d9fcede3aecd7e10c7180486873770bd16c42c9a106383fc9bcef357579112fd.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:908
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NTFS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF74B.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1516
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NTFS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFA19.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2044

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF74B.tmp

    Filesize

    1KB

    MD5

    33cd528fd21d83728fff6bb818a94d4a

    SHA1

    1e69b73ed13ef751e5c1edbd3479bf0b5b6eced7

    SHA256

    a1e37aa3f9b460cc674ff52f312839966593bd751747af8876b1b5815034e91c

    SHA512

    7ebe3088f530b32c1f6199279577d287e89c740f7475dee40139dc8378c4bf67995133ae5705515efc1eaa31060e2cbf7601e2b1d3f82e372a9b30c067e5648b

  • C:\Users\Admin\AppData\Local\Temp\tmpFA19.tmp

    Filesize

    1KB

    MD5

    981e126601526eaa5b0ad45c496c4465

    SHA1

    d610d6a21a8420cc73fcd3e54ddae75a5897b28b

    SHA256

    11ae277dfa39e7038b782ca6557339e7fe88533fe83705c356a1500a1402d527

    SHA512

    a59fb704d931ccb7e1ec1a7b98e24ccd8708be529066c6de4b673098cdebef539f7f50d9e051c43954b5a8e7f810862b3a4ede170f131e080dadc3e763ed4bdb

  • memory/908-62-0x000000000041E792-mapping.dmp

  • memory/908-58-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-66-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-69-0x0000000074690000-0x0000000074C3B000-memory.dmp

    Filesize

    5.7MB

  • memory/908-56-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/908-55-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1516-70-0x0000000000000000-mapping.dmp

  • memory/1972-54-0x00000000751A1000-0x00000000751A3000-memory.dmp

    Filesize

    8KB

  • memory/1972-68-0x0000000074690000-0x0000000074C3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2044-72-0x0000000000000000-mapping.dmp