Overview

overview

10

Static

static

1

DOC090321-...df.exe

windows7_x64

10

DOC090321-...df.exe

windows10_x64

10

Analysis

  • max time kernel
    114s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    21-04-2021 10:09

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General

  • Target

    DOC090321-0903201154919,pdf.exe

  • Size

    461KB

  • MD5

    81b2ffaa2138b73f40db5f9b7b73cb3b

  • SHA1

    13abf14f51a146390967b64db02ac569fe818d23

  • SHA256

    7ea977d9f961ac08042e890508150c65655800e27be730debca6a5f30ee357f6

  • SHA512

    217f31fe68f13521219782c413eb3c529d4330eb67503ea97cf0ef27a71fa4af6d084da7cfc7a0b4f089a6bb98bd00babf37ed9dad3fcaaa702b650e15c6aa87

Score
10/10
nanocoreevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

marstonstyl247.ddns.net:9634

79.134.225.7:9634
Mutex

a6d98af9-f94c-4263-9a07-223c63c60503

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.134.225.7

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-01-31T10:16:24.295120736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9634

  • default_group

    NANO BOY

  • 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

    a6d98af9-f94c-4263-9a07-223c63c60503

  • 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 2 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 4 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
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:856
    • 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:3648

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\nst76DD.tmp\5asyop15gvitdes.dll
    MD5

    0c6024aaf2091b95e0f9eea6c6ed1e3c

    SHA1

    87c2e435f3a63e1ed9b0826b9b81543450dad90d

    SHA256

    9d2e437e4915dae91212861c1c7c3cbcef920e8fa936b3d07d34606160501b9c

    SHA512

    65aba26028b316727b7e93de5d8d9b8cd6dd47bbad8349f84b25ce0d826e51d9575e3d8ff8b8a8fc38924de19cca1509cf0d274d39f7612423c880216d0baf59

    Download Submit
  • memory/856-117-0x0000000000E91000-0x0000000000E94000-memory.dmp
    Filesize

    12KB

    Download
  • memory/856-116-0x0000000000E90000-0x0000000000E91000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3648-115-0x000000000040188B-mapping.dmp
    Download
  • memory/3648-118-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/3648-119-0x00000000026A0000-0x00000000026A1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3648-120-0x00000000026A1000-0x00000000026A2000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3648-121-0x00000000026A2000-0x00000000026A4000-memory.dmp
    Filesize

    8KB

    Download
  • memory/3648-122-0x00000000026A7000-0x00000000026A8000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3648-123-0x00000000026A8000-0x00000000026A9000-memory.dmp
    Filesize

    4KB

    Download