Analysis

  • max time kernel
    144s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-10-2022 04:23

General

  • Target

    99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe

  • Size

    847KB

  • MD5

    e31699917d9f141413507e5f628c2454

  • SHA1

    9b7ff7f7f0a173f0851b0bcbf3de0654af52b7c9

  • SHA256

    99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902

  • SHA512

    018749a0782c4aed731adea492928637df2dad8db6b8813d831540bf7225c487bb3a7275f75dc797c11002cf57c7a9c9d48c453a90a7e45d8c988c81ed474f8d

  • SSDEEP

    24576:sokPPpLnS2i5JEoP9OrozsW02IsPGaUYpF:Ehndi5P9EozsWBIsP/USF

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

craigjonson91211.freedynamicdns.net:2010

Mutex

314e68fd-30e1-43f4-a3e6-582b481b1081

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    craigjonson91211.freedynamicdns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-25T15:37:55.685681636Z

  • 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

    2010

  • 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

    314e68fd-30e1-43f4-a3e6-582b481b1081

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • 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.

  • 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 5 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\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe
    "C:\Users\Admin\AppData\Local\Temp\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4912
    • C:\Users\Admin\AppData\Local\Temp\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe
      "C:\Users\Admin\AppData\Local\Temp\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe"
      2⤵
        PID:2248
      • C:\Users\Admin\AppData\Local\Temp\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe
        "C:\Users\Admin\AppData\Local\Temp\99b799d28261cdefac2a4fcae6774324bfb9bb9aed868da301fc2292ed4b0902.exe"
        2⤵
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2004
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "AGP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp5227.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:2136
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "AGP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp547A.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:3428

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp5227.tmp

      Filesize

      1KB

      MD5

      eb94c3d4651c88823cbd5e6e29bbb227

      SHA1

      293be4d509365d7a26f6366ea5595c7c7a031b88

      SHA256

      36ae232dca513534ebdc9483e3fbd13d2ea5e0170564341b3b5d4aa2e35875bc

      SHA512

      96fd5fa2d1196b2587c726556e16feb2ab671fef0f68fe746afcb8548ecb5ae2728edc37a3e58d47848cb40ccfac12931ce49dbb9a5a4736b9c864586bb4c6ed

    • C:\Users\Admin\AppData\Local\Temp\tmp547A.tmp

      Filesize

      1KB

      MD5

      157cd55403665c49c9fd3ca1196c4397

      SHA1

      4feed6e606b41bb617274471349582963182756b

      SHA256

      49d903f84313feb16bd189c58b6c206f98b05da00ea0da881e2ff0c893b6ba5e

      SHA512

      bea7e3caa9c37cadd772a6d3ee0d9ed47de6b3e880cd58649be2939cacd00f70d4edc1ad177e432539267bb520094d9cda3f781cdfc69122f3775242321c11b8

    • memory/2004-139-0x0000000000000000-mapping.dmp

    • memory/2004-140-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2136-141-0x0000000000000000-mapping.dmp

    • memory/2248-138-0x0000000000000000-mapping.dmp

    • memory/3428-143-0x0000000000000000-mapping.dmp

    • memory/4912-132-0x0000000000AA0000-0x0000000000B7A000-memory.dmp

      Filesize

      872KB

    • memory/4912-137-0x00000000092A0000-0x0000000009306000-memory.dmp

      Filesize

      408KB

    • memory/4912-136-0x0000000008FA0000-0x000000000903C000-memory.dmp

      Filesize

      624KB

    • memory/4912-135-0x00000000053E0000-0x00000000053EA000-memory.dmp

      Filesize

      40KB

    • memory/4912-134-0x00000000053F0000-0x0000000005482000-memory.dmp

      Filesize

      584KB

    • memory/4912-133-0x0000000005AD0000-0x0000000006074000-memory.dmp

      Filesize

      5.6MB