Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2025, 19:48

General

  • Target

    40fe69be55041a8607bf2596d0fa649ab26f6d6bd6973fb955f14f4e8a066b6c.exe

  • Size

    680KB

  • MD5

    e2e26573196fd444c8845d29e73a6b00

  • SHA1

    8a2fc9e82c11d234e74846451b12c73d69dea955

  • SHA256

    40fe69be55041a8607bf2596d0fa649ab26f6d6bd6973fb955f14f4e8a066b6c

  • SHA512

    02906faffe3bb49e0a936f5d07215ffe8b7cc28b2f65536e17b1b6204aa7966998b4a70bb09bf5a1fdfaa6efef6f729fbeabb1a2e3c540cd1965f73edabc8b78

  • SSDEEP

    12288:lb4JO3lL2iNNOhnc4PrvIpMdd2lBKiIQulBt8LFSERr:lb4JO3lL1XWHv9dd2lEiIQ0P88E

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

without.duckdns.org:2078

Mutex

17fd7e7e-3990-4c53-9987-94767303fd64

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    without.duckdns.org

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-09-03T20:18:47.158112236Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    2078

  • default_group

    without

  • 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

    17fd7e7e-3990-4c53-9987-94767303fd64

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    without.duckdns.org

  • 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
  • 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 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\40fe69be55041a8607bf2596d0fa649ab26f6d6bd6973fb955f14f4e8a066b6c.exe
    "C:\Users\Admin\AppData\Local\Temp\40fe69be55041a8607bf2596d0fa649ab26f6d6bd6973fb955f14f4e8a066b6c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NeKPJNb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9CCC.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2708
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "{path}"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:2620

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp9CCC.tmp

    Filesize

    1KB

    MD5

    f4125088909b4f46cd12e6abbdf0263a

    SHA1

    8eb1805ef7e352118999c748ef38c05b35eddf3b

    SHA256

    8b2084838a77fb284f2261c7ef64035424e6416fefc14a8553ce70c80acae3b3

    SHA512

    c2cd153e88c4330056c6b23b32c2506823a123ffeacc472809d8ae7458364acc4e533f0735933338fa8c87afd1a172da54f8df238b8ba0d69f7290ec837b72b3

  • memory/1552-0-0x0000000074791000-0x0000000074792000-memory.dmp

    Filesize

    4KB

  • memory/1552-1-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-2-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-3-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-4-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-5-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/1552-21-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-10-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-18-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-20-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-11-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2620-9-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-16-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-13-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2620-24-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-23-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-22-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-26-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-27-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-28-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-29-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB

  • memory/2620-30-0x0000000074790000-0x0000000074D3B000-memory.dmp

    Filesize

    5.7MB