Overview

overview

10

Static

static

1

DOC090321-...df.exe

windows7_x64

10

DOC090321-...df.exe

windows10_x64

10

Analysis

  • max time kernel
    135s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    21-04-2021 03:46

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General

  • Target

    DOC090321-0903201154919,pdf.exe

  • Size

    393KB

  • MD5

    eb474c921d77d2c31fd3ae570ea5dc13

  • SHA1

    0601b0da0af91c724e7e90ebdb56a7b634511b85

  • SHA256

    d273cc0da43feffe12b225bd5a7e5942d376296f74cae9fb942240a035e06c6a

  • SHA512

    028f15d3d88154024fef61973912466c22f45e4296f6657783818a1568e403932a277c0a44e783c2be6cd10b0440f0175ad87f0ee22e7e3f847894b20d539f9e

Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

marstonstyl247.ddns.net:4967

Mutex

84b8ce77-623f-4519-84a8-4736944faf50

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-01-08T23:42:48.528997636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    4967

  • default_group

    Host_Agent

  • 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

    84b8ce77-623f-4519-84a8-4736944faf50

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    marstonstyl247.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.

    keyloggertrojanstealerspywarenanocore
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • 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.

  • 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 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOC090321-0903201154919,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DOC090321-0903201154919,pdf.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Users\Admin\AppData\Local\Temp\DOC090321-0903201154919,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DOC090321-0903201154919,pdf.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
      PID:1956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nscF826.tmp\6lxtr2d4ljz.dll
    MD5

    b7b99f4cf8bc2fcfb440909866bf60f0

    SHA1

    f944a26cd5e17d63e8af098272f989f1cbc76154

    SHA256

    313746cd5116d00559a72ca04f97ca78ab5963834dc1f5254609b3dfc88d1a86

    SHA512

    47be95a08cdb6a5cca0eedd71e70106279c9ee08c3caf3e8d450f3155d98fa222f33d412d516209a985659b33aa7c67ed0e1b6d28dda7410eae7b879dd239229

    Download Submit
  • memory/1672-59-0x0000000075971000-0x0000000075973000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1672-63-0x0000000002860000-0x00000000034AA000-memory.dmp
    Filesize

    12.3MB

    Download
  • memory/1672-65-0x0000000002860000-0x00000000034AA000-memory.dmp
    Filesize

    12.3MB

    Download
  • memory/1956-61-0x000000000040188B-mapping.dmp
    Download
  • memory/1956-64-0x0000000001F60000-0x0000000001F61000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1956-66-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/1956-69-0x0000000001F67000-0x0000000001F68000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1956-68-0x0000000001F62000-0x0000000001F64000-memory.dmp
    Filesize

    8KB

    Download
  • memory/1956-67-0x0000000001F61000-0x0000000001F62000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1956-70-0x0000000001F68000-0x0000000001F69000-memory.dmp
    Filesize

    4KB

    Download