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Overview

overview

10

Static

static

10

Start.exe

windows10-1703-x64

10

Analysis

  • max time kernel
    13s
  • max time network
    11s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    28/09/2024, 20:00

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General

  • Target

    Start.exe

  • Size

    202KB

  • MD5

    775d903c7d0676e880682b2f78c0c528

  • SHA1

    44b0fb55ceb07e6e707824c9c9964d36bd7ebe76

  • SHA256

    631059c3094723949f4937b3326261cb60bbf62adeac331afc7caedcd3a74dfe

  • SHA512

    c14ba4329d9ef6977210529f4657ff273cb9a023974df990293daee2b191bd8d713d96eda6a41b8d70da52ec91692f64dc327d9ddb8211c2e66ff534ea880342

  • SSDEEP

    3072:gzEqV6B1jHa6dtJ10jgvzcgi+oG/j9iaMP2s/HITaMf8us+kVoSliWaR4FFMYcdD:gLV6Bta6dtJmakIM5sfZs++iWFHcdrP

Score
10/10
nanocorediscoveryevasionkeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

103.202.55.183:1604

Mutex

5b5911ea-ea90-4e20-ad14-1eb49fa38e28

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    103.202.55.183

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-07-03T23:31:21.656735436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1604

  • default_group

    hax

  • 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

    5b5911ea-ea90-4e20-ad14-1eb49fa38e28

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    103.202.55.183

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 36 IoCs
  • Suspicious use of SendNotifyMessage 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Start.exe
    "C:\Users\Admin\AppData\Local\Temp\Start.exe"
    1⤵
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    PID:4780
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /0
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:4724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\DPI Service\dpisvc.exe
    Filesize

    202KB

    MD5

    775d903c7d0676e880682b2f78c0c528

    SHA1

    44b0fb55ceb07e6e707824c9c9964d36bd7ebe76

    SHA256

    631059c3094723949f4937b3326261cb60bbf62adeac331afc7caedcd3a74dfe

    SHA512

    c14ba4329d9ef6977210529f4657ff273cb9a023974df990293daee2b191bd8d713d96eda6a41b8d70da52ec91692f64dc327d9ddb8211c2e66ff534ea880342

    Download Submit

  • memory/4780-0-0x0000000073BD1000-0x0000000073BD2000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4780-1-0x0000000073BD0000-0x0000000074180000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4780-2-0x0000000073BD0000-0x0000000074180000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4780-11-0x0000000073BD0000-0x0000000074180000-memory.dmp

    Filesize

    5.7MB

    Download

  • memory/4780-12-0x0000000073BD0000-0x0000000074180000-memory.dmp

    Filesize

    5.7MB

    Download