Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2024 01:50

General

  • Target

    87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe

  • Size

    655KB

  • MD5

    76839e674adbc02d2acf25a4fdde1039

  • SHA1

    f5f977c2d069d41f45c2a138ef837228a929214f

  • SHA256

    87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf

  • SHA512

    55b7bbf5dda6dbe5b81f4fa0e131883ecd11c5db18c4b3c80d3af2b3ea078b991466496a906f1deb7f5178144a7133c48b58680d11658d2e3feefc0fa36fe043

  • SSDEEP

    12288:WnCrahC2unU+ihE6d7YLQwX3796XDIXXcEre7mPKOjewUnB3GmEq:TahQU+4dmQan5re7myqewUVNE

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

blv23728.ddns.net:6110

127.0.0.1:6110

Mutex

7c49fc8b-b4e3-4ea2-a895-eda0223cb79d

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-07-11T09:55:17.304143036Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6110

  • default_group

    M3M3

  • 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

    7c49fc8b-b4e3-4ea2-a895-eda0223cb79d

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    blv23728.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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • 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).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe
    "C:\Users\Admin\AppData\Local\Temp\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5108
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4768
    • C:\Users\Admin\AppData\Local\Temp\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe
      "C:\Users\Admin\AppData\Local\Temp\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe"
      2⤵
      • 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
      • Suspicious use of WriteProcessMemory
      PID:212
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBE7D.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:208
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "ARP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBFD6.tmp"
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:776

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\87df6e5a5e0a50b6d49e15500f70588476991ef2ce6b6a745ab5164314a34fcf.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4adbqwno.mfx.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpBE7D.tmp

    Filesize

    1KB

    MD5

    944a7564eca114d8cc0bf09cacae107e

    SHA1

    f9e178fe9e44fae8d9fd9d574cc39b799d06547e

    SHA256

    ba522b99de13a7cd669a3dc482911ff76f2c34526651b0530e2f7906466c5c91

    SHA512

    b49bd228b56b3455de89f98bef9b88c69ab9bed9e91088f73706c2a30364aad8e85b219bfff8a6ee5b64d26132fdd589b578e1549574329a9bf1a6e41475fbe5

  • C:\Users\Admin\AppData\Local\Temp\tmpBFD6.tmp

    Filesize

    1KB

    MD5

    447ab194ab36cb1d20078d80e502b1b2

    SHA1

    a947b3b2c91d7c50bb8d39bd4fc91a0d0cc5b1c0

    SHA256

    8d5304b20b7d7dea223ce2738e5668054250d57bf6bed86b305b69924bd472f5

    SHA512

    49ddc557f7f6635627eea9bf0fa12a14b7b13edb235ed560ee0044a7f87fe27b686ff878d347d0273d92eb0b318b8c2bca85c0fbf42d586ed7d7da39eac6a327

  • memory/212-75-0x0000000007180000-0x000000000719A000-memory.dmp

    Filesize

    104KB

  • memory/212-74-0x0000000007170000-0x0000000007182000-memory.dmp

    Filesize

    72KB

  • memory/212-79-0x00000000071E0000-0x00000000071F0000-memory.dmp

    Filesize

    64KB

  • memory/212-78-0x00000000071D0000-0x00000000071E4000-memory.dmp

    Filesize

    80KB

  • memory/212-77-0x00000000071C0000-0x00000000071D2000-memory.dmp

    Filesize

    72KB

  • memory/212-76-0x00000000071B0000-0x00000000071BE000-memory.dmp

    Filesize

    56KB

  • memory/212-81-0x0000000007210000-0x000000000721E000-memory.dmp

    Filesize

    56KB

  • memory/212-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/212-82-0x0000000007230000-0x000000000725E000-memory.dmp

    Filesize

    184KB

  • memory/212-80-0x00000000071F0000-0x0000000007204000-memory.dmp

    Filesize

    80KB

  • memory/212-14-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/212-42-0x0000000005A20000-0x0000000005A2A000-memory.dmp

    Filesize

    40KB

  • memory/212-18-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/212-44-0x0000000006910000-0x000000000691A000-memory.dmp

    Filesize

    40KB

  • memory/212-43-0x00000000068D0000-0x00000000068EE000-memory.dmp

    Filesize

    120KB

  • memory/212-83-0x0000000007260000-0x0000000007274000-memory.dmp

    Filesize

    80KB

  • memory/212-90-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-16-0x0000000002CB0000-0x0000000002CE6000-memory.dmp

    Filesize

    216KB

  • memory/4768-64-0x0000000007B90000-0x0000000007C26000-memory.dmp

    Filesize

    600KB

  • memory/4768-27-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-26-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-37-0x0000000005FF0000-0x0000000006344000-memory.dmp

    Filesize

    3.3MB

  • memory/4768-25-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-23-0x0000000005730000-0x0000000005796000-memory.dmp

    Filesize

    408KB

  • memory/4768-22-0x0000000005510000-0x0000000005532000-memory.dmp

    Filesize

    136KB

  • memory/4768-17-0x00000000057A0000-0x0000000005DC8000-memory.dmp

    Filesize

    6.2MB

  • memory/4768-72-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/4768-45-0x00000000065C0000-0x00000000065DE000-memory.dmp

    Filesize

    120KB

  • memory/4768-46-0x0000000006600000-0x000000000664C000-memory.dmp

    Filesize

    304KB

  • memory/4768-47-0x0000000007580000-0x00000000075B2000-memory.dmp

    Filesize

    200KB

  • memory/4768-48-0x0000000070C40000-0x0000000070C8C000-memory.dmp

    Filesize

    304KB

  • memory/4768-58-0x0000000006BB0000-0x0000000006BCE000-memory.dmp

    Filesize

    120KB

  • memory/4768-59-0x0000000007600000-0x00000000076A3000-memory.dmp

    Filesize

    652KB

  • memory/4768-60-0x0000000007F50000-0x00000000085CA000-memory.dmp

    Filesize

    6.5MB

  • memory/4768-61-0x0000000007910000-0x000000000792A000-memory.dmp

    Filesize

    104KB

  • memory/4768-63-0x0000000007980000-0x000000000798A000-memory.dmp

    Filesize

    40KB

  • memory/4768-24-0x0000000005E80000-0x0000000005EE6000-memory.dmp

    Filesize

    408KB

  • memory/4768-65-0x0000000007B10000-0x0000000007B21000-memory.dmp

    Filesize

    68KB

  • memory/4768-66-0x0000000007B40000-0x0000000007B4E000-memory.dmp

    Filesize

    56KB

  • memory/4768-67-0x0000000007B50000-0x0000000007B64000-memory.dmp

    Filesize

    80KB

  • memory/4768-68-0x0000000007C50000-0x0000000007C6A000-memory.dmp

    Filesize

    104KB

  • memory/4768-69-0x0000000007C30000-0x0000000007C38000-memory.dmp

    Filesize

    32KB

  • memory/5108-0-0x000000007508E000-0x000000007508F000-memory.dmp

    Filesize

    4KB

  • memory/5108-15-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/5108-10-0x000000000AB20000-0x000000000ABBC000-memory.dmp

    Filesize

    624KB

  • memory/5108-9-0x0000000006AB0000-0x0000000006B2A000-memory.dmp

    Filesize

    488KB

  • memory/5108-8-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/5108-7-0x000000007508E000-0x000000007508F000-memory.dmp

    Filesize

    4KB

  • memory/5108-6-0x0000000008230000-0x0000000008248000-memory.dmp

    Filesize

    96KB

  • memory/5108-5-0x0000000075080000-0x0000000075830000-memory.dmp

    Filesize

    7.7MB

  • memory/5108-4-0x0000000005870000-0x000000000587A000-memory.dmp

    Filesize

    40KB

  • memory/5108-3-0x00000000058E0000-0x0000000005972000-memory.dmp

    Filesize

    584KB

  • memory/5108-2-0x0000000005DF0000-0x0000000006394000-memory.dmp

    Filesize

    5.6MB

  • memory/5108-1-0x0000000000F00000-0x0000000000FAA000-memory.dmp

    Filesize

    680KB