Analysis

  • max time kernel
    135s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2022, 04:39

General

  • Target
    SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.25882.32744.exe
  • Size 496KB
  • Sample221109-e9y5xafeck
  • SHA256 bafacce7e32e02ec671933a99bdb31c65addf24813422f50f0a5879637210255
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nanocore

Version
  • 1.2.2.0

C2
  • brewsterchristophe.ddns.net:5899

  • 194,147,5,75:5899

Mutex
  • b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194,147,5,75

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-04-29T03:26:40.572298236Z

  • 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

    5899

  • 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

    b8aebc29-8c64-444f-99e6-dc4122e9bbfc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    brewsterchristophe.ddns.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.

  • Executes dropped EXE 2 IoCs
  • 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). Likely ransomware behaviour.

  • 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 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.25882.32744.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.NSISX.Spy.Gen.24.25882.32744.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1588
    • C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe
      "C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3136
      • C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe
        "C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe"
        3⤵
        • Executes dropped EXE
        • 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:1456
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "AGP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1ACB.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:1424
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "AGP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1B78.tmp"
          4⤵
          • Creates scheduled task(s)
          PID:224

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        hqhklfhh.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe
        • Size 5KB
        • SHA256 f80777e6d8c914b381d0f50544565043631136a1d7c90a912c27ac0c3be179a7
        • MD5 SHA1 SHA512 SSDEEP

        hqhklfhh.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe
        • Size 5KB
        • SHA256 f80777e6d8c914b381d0f50544565043631136a1d7c90a912c27ac0c3be179a7
        • MD5 SHA1 SHA512 SSDEEP

        hqhklfhh.exe

        • Path C:\Users\Admin\AppData\Local\Temp\hqhklfhh.exe
        • Size 5KB
        • SHA256 f80777e6d8c914b381d0f50544565043631136a1d7c90a912c27ac0c3be179a7
        • MD5 SHA1 SHA512 SSDEEP

        pewmyhijknb.tq

        • Path C:\Users\Admin\AppData\Local\Temp\pewmyhijknb.tq
        • Size 281KB
        • SHA256 6de0b4b821a2a109b9d155bc2816525d52986b72e14767f04cfdcf28d1ebe302
        • MD5 SHA1 SHA512 SSDEEP

        tmp1ACB.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1ACB.tmp
        • Size 1KB
        • SHA256 d0e082040a90737e8f4a2e9c1e00eba62fe9f0a5aef24fff63fc2cce5be43a1c
        • MD5 SHA1 SHA512

        tmp1B78.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp1B78.tmp
        • Size 1KB
        • SHA256 49d903f84313feb16bd189c58b6c206f98b05da00ea0da881e2ff0c893b6ba5e
        • MD5 SHA1 SHA512

        xevhrny.w

        • Path C:\Users\Admin\AppData\Local\Temp\xevhrny.w
        • Size 5KB
        • SHA256 b4652d0dba93431e0c657ea89c75f9b425ff1ff33303aeace9e460e1d6bc98da
        • MD5 SHA1 SHA512 SSDEEP

        memory/1456-141-0x00000000052F0000-0x000000000538C000-memory.dmp

        memory/1456-142-0x0000000000400000-0x000000000044A000-memory.dmp

        memory/1456-143-0x0000000005250000-0x000000000525A000-memory.dmp

        memory/1456-140-0x0000000005140000-0x00000000051D2000-memory.dmp

        memory/1456-139-0x0000000005800000-0x0000000005DA4000-memory.dmp

        memory/1456-148-0x0000000006BE0000-0x0000000006C46000-memory.dmp