Overview

overview

10

Static

static

Folha de d...oc.exe

windows7_x64

10

Folha de d...oc.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 12:10

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General

  • Target

    Folha de dados de cotação para nossa empresa doc.exe

  • Size

    384KB

  • MD5

    4f6289f38c2e4b763aeb64c42b0baaa9

  • SHA1

    b7b2718783a2a286aa6f79ec72ce07f4ac550c24

  • SHA256

    bbb434180f465363ccad24124ff5a3f326d994952fe1146c8d7b7a32bf3319f3

  • SHA512

    c3476055ba0d33125553cd85a99bef91636a1d368c0bc03c884a8fd19d991a9d0fb58dc5e9a68f4678c091dfac4444448c3adf8e8b56eb994591847f548dabba

Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

24thmatch2020.duckdns.org:5626

127.0.0.1:5626
Mutex

1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-05T07:10:58.206265736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    true

  • connect_delay

    4000

  • connection_port

    5626

  • default_group

    24thMarch

  • 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

    1d5c6dc1-3b0f-4759-9757-c47b26dc4c4d

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    24thmatch2020.duckdns.org

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Looks for VirtualBox Guest Additions in registry 2 TTPs
    evasion
  • Looks for VMWare Tools registry key 2 TTPs
    evasion
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Maps connected drives based on registry 3 TTPs 2 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • Suspicious use of SetThreadContext 1 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 1 IoCs

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

    persistence
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe
    "C:\Users\Admin\AppData\Local\Temp\Folha de dados de cotação para nossa empresa doc.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ixhpELYlqfCTYq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9064.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4864
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
        PID:4376
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
        "{path}"
        2⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:3412

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Defense Evasion

    Virtualization/Sandbox Evasion

    2
    T1497

    Credential Access

    Discovery

    Query Registry

    5
    T1012

    Virtualization/Sandbox Evasion

    2
    T1497

    System Information Discovery

    4
    T1082

    Peripheral Device Discovery

    1
    T1120

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp9064.tmp
      Filesize

      1KB

      MD5

      16de9bb4acfd2e932046922a5ff77a67

      SHA1

      fb1234383b84fa57260150929a44d6b78b480256

      SHA256

      5b2f34c85901efe8c5ff6998d11c8fee6bcc83b0ced49d0d027d9882c6223236

      SHA512

      d7345133b381fe4ed6bfb0918224126f91bf14a7d225cf0a832bf4a563c742da5736078adeb76946ab51f1a58d3ca5379f570f5aa92b6a8eab2302fc40678133

      Download Submit
    • memory/3412-134-0x0000000000000000-mapping.dmp
      Download
    • memory/3412-135-0x0000000000400000-0x0000000000438000-memory.dmp
      Filesize

      224KB

      Download
    • memory/3412-136-0x0000000074A40000-0x0000000074FF1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4376-133-0x0000000000000000-mapping.dmp
      Download
    • memory/4824-130-0x0000000074A40000-0x0000000074FF1000-memory.dmp
      Filesize

      5.7MB

      Download
    • memory/4864-131-0x0000000000000000-mapping.dmp
      Download