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
    146s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:10

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General

  • Target

    Folha de dados de cotação para nossa empresa doc.exe

  • Size

    666KB

  • MD5

    d8a701f0eb40bb760398aa2712b1996b

  • SHA1

    7000e9cff7196d30c9a371f89b1fc90530c49953

  • SHA256

    8c71aca391fbd24fb5400cbc0cea7bfc424dfac861cbfebbac25393e8b21bbf4

  • SHA512

    4e11edd504cad4ecddb1a4bb3f9130479202a4a7baa150e65a112c6c7b2d02b6da47dfb1c614f33bb6fd7332bced0382667717fb2b5da09ff124814c2ee7eb91

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.

  • 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 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 21 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
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AaZxklpPqQpgW" /XML "C:\Users\Admin\AppData\Local\Temp\tmp674C.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:896
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
      "{path}"
      2⤵
        PID:948
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
        "{path}"
        2⤵
          PID:1056
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
          "{path}"
          2⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1204

      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

      4
      T1012

      Virtualization/Sandbox Evasion

      2
      T1497

      System Information Discovery

      3
      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\tmp674C.tmp
        Filesize

        1KB

        MD5

        1995f1d81967e0d587a356ccc9dcc517

        SHA1

        2adc2b0175cc4fc824a7901698e461eda4dbff86

        SHA256

        97c32986dac1168ede4070210ace0e0ecd46bab537eb8d9b8737f9df22cd4a6e

        SHA512

        24f05810da6fd4aeb4b6a65b33144df7b9cc975827e89d345259652f2b1f5a1c71e2c84f45457a0e2be1395aeffb6b5b111b011e117a4cb154ac77faca131b18

        Download Submit
      • memory/896-56-0x0000000000000000-mapping.dmp
        Download
      • memory/1204-61-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-58-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-59-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-62-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-64-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-65-0x000000000041E792-mapping.dmp
        Download
      • memory/1204-67-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-69-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

        Download
      • memory/1204-71-0x00000000748C0000-0x0000000074E6B000-memory.dmp
        Filesize

        5.7MB

        Download
      • memory/1204-72-0x0000000002216000-0x0000000002227000-memory.dmp
        Filesize

        68KB

        Download
      • memory/1756-55-0x00000000748C0000-0x0000000074E6B000-memory.dmp
        Filesize

        5.7MB

        Download
      • memory/1756-54-0x00000000753B1000-0x00000000753B3000-memory.dmp
        Filesize

        8KB

        Download