Analysis

  • max time kernel
    180s
  • max time network
    184s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-10-2022 20:28

General

  • Target

    365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe

  • Size

    570KB

  • MD5

    43263aebb2da49a5fc18060460612070

  • SHA1

    9135d2cc0b94be2a1f83c31989d1cd2da11d9a77

  • SHA256

    365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287

  • SHA512

    32f7f0d5b65a47b75396092a7a041f43d938884adb35ccf0cb4c46c2d0f66f10d0045395efe59bb3dbbcccb5fd7fb01305a76b35aa026dcab5a679323fcedab4

  • SSDEEP

    12288:oRd0cYvOLHy4jkNssf8KJlM1d49nWq1dyP65CwJnwLwFxQ:dkSekNsFKDM1mVWA5nwLu

Malware Config

Extracted

Family

nanocore

Version

1.2.2.2

C2

Driss100.ddns.net:59

Mutex

386bff53-ea77-4841-b2ec-ada528cef235

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2015-05-20T00:43:36.012986036Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    59

  • 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

    386bff53-ea77-4841-b2ec-ada528cef235

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    Driss100.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

    1.2.2.2

  • wan_timeout

    8000

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • 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). Likely ransomware behaviour.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe
    "C:\Users\Admin\AppData\Local\Temp\365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3756
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Update\Mozzila Firefox" /XML "C:\Users\Admin\AppData\Local\Temp\asssss.xml"
      2⤵
      • Creates scheduled task(s)
      PID:4004
    • C:\Users\Admin\AppData\Local\Temp\365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe
      "C:\Users\Admin\AppData\Local\Temp\365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe"
      2⤵
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3676

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\365b40c61b259c3e209abdd6bcc6546cdb0d3438694d585b65228fe4553af287.exe.log

    Filesize

    223B

    MD5

    1cc4c5b51e50ec74a6880b50ecbee28b

    SHA1

    1ba7bb0e86c3d23fb0dc8bf16798d37afb4c4aba

    SHA256

    0556734df26e82e363d47748a3ceedd5c23ea4b9ded6e68bd5c373c1c9f8777b

    SHA512

    5d5532602b381125b24a9bd78781ed722ce0c862214ef17e7d224d269e6e7045c919ab19896dd8d9ae8920726092efe0ffb776a77a9a9539c4a70188d5a4c706

  • C:\Users\Admin\AppData\Local\Temp\asssss.xml

    Filesize

    1KB

    MD5

    b1e90ac848a31875b555f0c311cb4321

    SHA1

    76027ae14879f528f7d0dec52c4f091d4cc593ee

    SHA256

    69b3091073e5b576b56801ed096fce3a758a44976cd67cb0887e274cf154a08a

    SHA512

    b8244c1f557a6bb336afe61fd845526c63deb3e307c683589a5c1d4cfed2a95f72a3e4439878b0910ccbebb2618ab13052982affec61d255c77ca69c4a40610f

  • memory/3676-135-0x0000000000000000-mapping.dmp

  • memory/3676-136-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3676-137-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3676-138-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/3676-142-0x0000000074C50000-0x0000000075201000-memory.dmp

    Filesize

    5.7MB

  • memory/3676-143-0x0000000074C50000-0x0000000075201000-memory.dmp

    Filesize

    5.7MB

  • memory/3756-132-0x0000000074C50000-0x0000000075201000-memory.dmp

    Filesize

    5.7MB

  • memory/3756-141-0x0000000074C50000-0x0000000075201000-memory.dmp

    Filesize

    5.7MB

  • memory/4004-133-0x0000000000000000-mapping.dmp