Overview

overview

10

Static

static

BFSV-1F(N)...SI.exe

windows7_x64

10

BFSV-1F(N)...SI.exe

windows10_x64

10

Analysis

  • max time kernel
    43s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    06-01-2021 16:11

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    BFSV-1F(N)_1B-8B_ANSI.exe

  • Size

    441KB

  • MD5

    157d3320cafb9799ed5d996692e8bea7

  • SHA1

    b8dc9d3720b84695bc18a4310a5f34e2603fc829

  • SHA256

    5b474ca6fc8158bd6f14d53bca8962f25db3392dfe324f49ddf376610bd785e4

  • SHA512

    aafe5ef3c4e7f0f24eb41da724b6a518bf18f5226e00e3318a888ab0b69de6724ee3da4fa210080f29f254f6a043ecfaa4753a841a21ef6f3f39c338feed8983

Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

45.138.49.96:1759

127.0.0.1:1759
Mutex

7a1bbaea-d9db-46c3-bdb2-a8de19c5813c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-09-29T00:45:14.298753536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1759

  • default_group

    nano

  • 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

    7a1bbaea-d9db-46c3-bdb2-a8de19c5813c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    45.138.49.96

  • 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
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • 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\BFSV-1F(N)_1B-8B_ANSI.exe
    "C:\Users\Admin\AppData\Local\Temp\BFSV-1F(N)_1B-8B_ANSI.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1756
    • C:\Users\Admin\AppData\Local\Temp\BFSV-1F(N)_1B-8B_ANSI.exe
      "C:\Users\Admin\AppData\Local\Temp\BFSV-1F(N)_1B-8B_ANSI.exe"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1800

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1800-2-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/1800-3-0x000000000040188B-mapping.dmp
    Download
  • memory/1800-4-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/1800-5-0x00000000741C0000-0x00000000748AE000-memory.dmp
    Filesize

    6.9MB

    Download
  • memory/1800-6-0x00000000005E0000-0x0000000000613000-memory.dmp
    Filesize

    204KB

    Download
  • memory/1800-8-0x00000000009A0000-0x00000000009A5000-memory.dmp
    Filesize

    20KB

    Download
  • memory/1800-9-0x0000000000A00000-0x0000000000A19000-memory.dmp
    Filesize

    100KB

    Download
  • memory/1800-10-0x00000000009B0000-0x00000000009B3000-memory.dmp
    Filesize

    12KB

    Download
  • memory/1800-11-0x0000000000AF0000-0x0000000000AFD000-memory.dmp
    Filesize

    52KB

    Download
  • memory/1800-12-0x0000000000B00000-0x0000000000B15000-memory.dmp
    Filesize

    84KB

    Download
  • memory/1800-13-0x0000000000B40000-0x0000000000B46000-memory.dmp
    Filesize

    24KB

    Download
  • memory/1800-14-0x0000000000B90000-0x0000000000B9C000-memory.dmp
    Filesize

    48KB

    Download
  • memory/1800-15-0x0000000000BF0000-0x0000000000BF7000-memory.dmp
    Filesize

    28KB

    Download
  • memory/1800-16-0x0000000000C00000-0x0000000000C06000-memory.dmp
    Filesize

    24KB

    Download
  • memory/1800-17-0x0000000000C90000-0x0000000000C9D000-memory.dmp
    Filesize

    52KB

    Download
  • memory/1800-18-0x0000000000CA0000-0x0000000000CA9000-memory.dmp
    Filesize

    36KB

    Download
  • memory/1800-19-0x0000000000CB0000-0x0000000000CBF000-memory.dmp
    Filesize

    60KB

    Download
  • memory/1800-20-0x0000000000CC0000-0x0000000000CCA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/1800-21-0x0000000004900000-0x0000000004929000-memory.dmp
    Filesize

    164KB

    Download
  • memory/1800-22-0x0000000000D20000-0x0000000000D2F000-memory.dmp
    Filesize

    60KB

    Download