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Analysis

  • max time kernel
    117s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2024, 09:47

General

  • Target

    1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe

  • Size

    434KB

  • MD5

    1ca4a0e2f74e5ffd751683f6afd1556e

  • SHA1

    228e7c61d1f6963a1a6617d02c9e3d8705088d64

  • SHA256

    1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6

  • SHA512

    5de83b5f4823e6fcc6f0f297a43c581bbcb875ba9ad78afc2d45179dc1d7040725c612392113ae47fcbf8957891439f1247b92091f2efbc861b8fe2ab1d92819

  • SSDEEP

    12288:nmJileuH/oPLDnoG3l+g9whD89s88C51/lX:Lee8FV+Gigs8H

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

37.0.10.137:9025

Mutex

b7d9d933-745d-49c1-bd0c-e06768b05c24

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    37.0.10.137

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-08-01T05:05:17.189046036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    9025

  • default_group

    LYDECKER

  • 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

    b7d9d933-745d-49c1-bd0c-e06768b05c24

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    37.0.10.137

  • 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.

  • Nanocore family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 3 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe
    "C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2228
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\AFUUjo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4958.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2344
    • C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe
      "C:\Users\Admin\AppData\Local\Temp\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe"
      2⤵
      • Checks whether UAC is enabled
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1348

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\1f0c4b2bfc1d9dc27b3624894740779c748988c8134c7e455706d5a0a8d1c0a6.exe.log

    Filesize

    1KB

    MD5

    8ec831f3e3a3f77e4a7b9cd32b48384c

    SHA1

    d83f09fd87c5bd86e045873c231c14836e76a05c

    SHA256

    7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

    SHA512

    26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

  • memory/1348-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1348-27-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1348-26-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1348-25-0x0000000005780000-0x000000000578A000-memory.dmp

    Filesize

    40KB

  • memory/1348-24-0x0000000005980000-0x000000000599E000-memory.dmp

    Filesize

    120KB

  • memory/1348-23-0x0000000005730000-0x000000000573A000-memory.dmp

    Filesize

    40KB

  • memory/1348-21-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/1348-19-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-10-0x0000000008070000-0x00000000080CC000-memory.dmp

    Filesize

    368KB

  • memory/2228-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

    Filesize

    4KB

  • memory/2228-9-0x0000000007F20000-0x0000000007FBC000-memory.dmp

    Filesize

    624KB

  • memory/2228-8-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-7-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

    Filesize

    4KB

  • memory/2228-6-0x0000000005280000-0x000000000528E000-memory.dmp

    Filesize

    56KB

  • memory/2228-20-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-5-0x0000000074C40000-0x00000000753F0000-memory.dmp

    Filesize

    7.7MB

  • memory/2228-4-0x0000000004FD0000-0x0000000004FDA000-memory.dmp

    Filesize

    40KB

  • memory/2228-3-0x0000000005020000-0x00000000050B2000-memory.dmp

    Filesize

    584KB

  • memory/2228-2-0x0000000005710000-0x0000000005CB4000-memory.dmp

    Filesize

    5.6MB

  • memory/2228-1-0x0000000000560000-0x00000000005D2000-memory.dmp

    Filesize

    456KB