Overview

overview

10

Static

static

PDF.exe

windows7_x64

10

PDF.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    147s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 02:54

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General

  • Target

    PDF.exe

  • Size

    341KB

  • MD5

    3fda76bc627ca60ec8d9aee9d1a16b17

  • SHA1

    411a2b06484c87a4933a6d71f23f2f80ed28ca65

  • SHA256

    cb70c14b7aa724c2d1cf6881f0a864897d953c367ddbc002594da76941ac376a

  • SHA512

    1dd410c41bbab510aee11d22416129b21a743dcc196e34500d4110be32190fb7374bf20d4b4cbae4c888a22c29ba7cdb775fa3dd97a9cb1aef19e409a1b3547e

Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

172.111.188.199:8829

Mutex

ce1d7a43-a4b9-4511-9ddf-1134841f2535

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-02-02T10:25:40.952250336Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8829

  • default_group

    Billi

  • 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

    ce1d7a43-a4b9-4511-9ddf-1134841f2535

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    172.111.188.199

  • 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.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\PDF.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks computer location settings
    • Maps connected drives based on registry
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:452
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PqLXpPC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF6E3.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1212
    • C:\Users\Admin\AppData\Local\Temp\PDF.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:4000

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

5
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpF6E3.tmp
    Filesize

    1KB

    MD5

    e24e5777516d0fd1fe455316c18c8cac

    SHA1

    694681a28ae4939d008dfe93b97dc03abc6e477f

    SHA256

    f27f018a6a23eb02b607b980d162cc9f15e474a643080d05ddfe043276d0bd1f

    SHA512

    e89a9161206f72f857ebacf63b214c33d8ad445ec4a69fbd5b2c8b5c7901029b6843cfd69cc3028a6571c7891265eb8b3833d6c4c953cb56cf698e81dd077f02

    Download Submit
  • memory/452-130-0x0000000075510000-0x0000000075AC1000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/1212-131-0x0000000000000000-mapping.dmp
    Download
  • memory/4000-133-0x0000000000000000-mapping.dmp
    Download
  • memory/4000-134-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

    Download
  • memory/4000-135-0x0000000075510000-0x0000000075AC1000-memory.dmp
    Filesize

    5.7MB

    Download