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
    9s
  • max time network
    152s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08-01-2021 08:23

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General

  • Target

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

  • Size

    338KB

  • MD5

    36f13aad903e851544fe137feca3435b

  • SHA1

    776d3d7e39a8b3e72e2e9b5c36a615e3157d05ad

  • SHA256

    41617ac4431c229ba27bf94617b465309e7f502ae5088cd12ee571a0428ea120

  • SHA512

    77a68e34a1bbf2360f8473368a0e3fd9c54567477a29561980851b82bd8ac1655919a109d6d4456a67bd633ef436fcf4697fc77d17e03e701d36ee7b82f296e6

Score
10/10
nanocoreevasionkeyloggerspywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

45.138.49.96:9999

127.0.0.1:9999
Mutex

c9506c35-7fc9-4302-a06c-3e362d7043e7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-10-09T09:41:16.640477036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9999

  • default_group

    Default

  • 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

    c9506c35-7fc9-4302-a06c-3e362d7043e7

  • 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 4 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:984
    • 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:2452

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

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Downloads

  • memory/984-4-0x000000001A0C0000-0x000000001A108000-memory.dmp
    Filesize

    288KB

    Download
  • memory/2452-15-0x0000000005DE0000-0x0000000005DE3000-memory.dmp
    Filesize

    12KB

    Download
  • memory/2452-7-0x00000000028E0000-0x0000000002913000-memory.dmp
    Filesize

    204KB

    Download
  • memory/2452-16-0x0000000005DF0000-0x0000000005DFD000-memory.dmp
    Filesize

    52KB

    Download
  • memory/2452-6-0x0000000073180000-0x000000007386E000-memory.dmp
    Filesize

    6.9MB

    Download
  • memory/2452-17-0x0000000006410000-0x0000000006425000-memory.dmp
    Filesize

    84KB

    Download
  • memory/2452-9-0x0000000005370000-0x0000000005371000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2452-10-0x0000000004F10000-0x0000000004F11000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2452-18-0x0000000006440000-0x0000000006446000-memory.dmp
    Filesize

    24KB

    Download
  • memory/2452-12-0x0000000004ED0000-0x0000000004ED1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2452-13-0x0000000005C20000-0x0000000005C25000-memory.dmp
    Filesize

    20KB

    Download
  • memory/2452-14-0x0000000005CB0000-0x0000000005CC9000-memory.dmp
    Filesize

    100KB

    Download
  • memory/2452-3-0x000000000040188B-mapping.dmp
    Download
  • memory/2452-5-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/2452-2-0x0000000000400000-0x0000000000448000-memory.dmp
    Filesize

    288KB

    Download
  • memory/2452-11-0x0000000004FB0000-0x0000000004FB1000-memory.dmp
    Filesize

    4KB

    Download
  • memory/2452-19-0x0000000006460000-0x000000000646C000-memory.dmp
    Filesize

    48KB

    Download
  • memory/2452-20-0x0000000006470000-0x0000000006477000-memory.dmp
    Filesize

    28KB

    Download
  • memory/2452-21-0x0000000006480000-0x0000000006486000-memory.dmp
    Filesize

    24KB

    Download
  • memory/2452-22-0x0000000006490000-0x000000000649D000-memory.dmp
    Filesize

    52KB

    Download
  • memory/2452-23-0x00000000064A0000-0x00000000064A9000-memory.dmp
    Filesize

    36KB

    Download
  • memory/2452-24-0x00000000064B0000-0x00000000064BF000-memory.dmp
    Filesize

    60KB

    Download
  • memory/2452-25-0x00000000064D0000-0x00000000064DA000-memory.dmp
    Filesize

    40KB

    Download
  • memory/2452-26-0x00000000064E0000-0x0000000006509000-memory.dmp
    Filesize

    164KB

    Download
  • memory/2452-27-0x0000000006520000-0x000000000652F000-memory.dmp
    Filesize

    60KB

    Download
  • memory/2452-28-0x00000000066F0000-0x00000000066F1000-memory.dmp
    Filesize

    4KB

    Download