Analysis

  • max time kernel
    146s
  • max time network
    133s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    27/01/2024, 02:31

General

  • Target

    790b9e9961e4b8ca5171d422239e0541.exe

  • Size

    1.0MB

  • MD5

    790b9e9961e4b8ca5171d422239e0541

  • SHA1

    28b6a1a0f3d823c2626d35607a58f19520f48df8

  • SHA256

    b1eeeb094d51c8f5f2931b00533cb5a0dfb98cf310ea06580c7967976d215b3b

  • SHA512

    bdb23c43c65dbaad81426ffb00abbe71b4e2e9ca57219f16c83724e490e2abd5c860d78536b68735f882b861f0ee7b7943dacf0308c69a60f90a33cb51809012

  • SSDEEP

    24576:08pod6qMyQ7RLRUlL/HbDL0PoJH4T2fXBxV:flAL/7DQSH4T2/BT

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

194.5.98.28:3040

127.0.0.1:3040

Mutex

eed6a097-a4d3-4ab0-9875-46a22fdaf6ba

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-05-18T10:55:38.959783136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    3040

  • default_group

    AUGUST 08/06/2021

  • 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

    eed6a097-a4d3-4ab0-9875-46a22fdaf6ba

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    194.5.98.28

  • 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.

  • 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).

  • 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 4 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\790b9e9961e4b8ca5171d422239e0541.exe
    "C:\Users\Admin\AppData\Local\Temp\790b9e9961e4b8ca5171d422239e0541.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2500
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sRwOrsHsaniq" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEE26.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2588
    • C:\Users\Admin\AppData\Local\Temp\790b9e9961e4b8ca5171d422239e0541.exe
      "C:\Users\Admin\AppData\Local\Temp\790b9e9961e4b8ca5171d422239e0541.exe"
      2⤵
        PID:2664
      • C:\Users\Admin\AppData\Local\Temp\790b9e9961e4b8ca5171d422239e0541.exe
        "C:\Users\Admin\AppData\Local\Temp\790b9e9961e4b8ca5171d422239e0541.exe"
        2⤵
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        PID:2160

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpEE26.tmp

      Filesize

      1KB

      MD5

      0f2408529a379d4126cc0c6bf4e637cc

      SHA1

      e5b872e57cdafb8ae664544c37956c8032d97ad5

      SHA256

      4335c2a04042be06de88eacc9a7a8b055d404b20e51444c44e212564cc2b687c

      SHA512

      355a2173a3f65ec81b25cab89dd75700defaf1ab794fd405eab3f07ef3b2bc77d61b7ad8863dd79d8387d68846eceeef05d114dbf24e809a2bfe57f8bca4ba2e

    • memory/2160-17-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-23-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-36-0x0000000005010000-0x0000000005050000-memory.dmp

      Filesize

      256KB

    • memory/2160-35-0x0000000074B10000-0x00000000751FE000-memory.dmp

      Filesize

      6.9MB

    • memory/2160-32-0x0000000000470000-0x000000000047A000-memory.dmp

      Filesize

      40KB

    • memory/2160-34-0x00000000004E0000-0x00000000004EA000-memory.dmp

      Filesize

      40KB

    • memory/2160-25-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-33-0x00000000004C0000-0x00000000004DE000-memory.dmp

      Filesize

      120KB

    • memory/2160-13-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/2160-15-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-27-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-19-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2160-29-0x0000000074B10000-0x00000000751FE000-memory.dmp

      Filesize

      6.9MB

    • memory/2160-30-0x0000000005010000-0x0000000005050000-memory.dmp

      Filesize

      256KB

    • memory/2500-28-0x0000000074B10000-0x00000000751FE000-memory.dmp

      Filesize

      6.9MB

    • memory/2500-7-0x0000000004810000-0x000000000484A000-memory.dmp

      Filesize

      232KB

    • memory/2500-1-0x0000000074B10000-0x00000000751FE000-memory.dmp

      Filesize

      6.9MB

    • memory/2500-2-0x0000000004D40000-0x0000000004D80000-memory.dmp

      Filesize

      256KB

    • memory/2500-0-0x0000000000A60000-0x0000000000B6E000-memory.dmp

      Filesize

      1.1MB

    • memory/2500-6-0x0000000005610000-0x00000000056B6000-memory.dmp

      Filesize

      664KB

    • memory/2500-5-0x0000000004D40000-0x0000000004D80000-memory.dmp

      Filesize

      256KB

    • memory/2500-4-0x0000000074B10000-0x00000000751FE000-memory.dmp

      Filesize

      6.9MB

    • memory/2500-3-0x00000000004E0000-0x00000000004FE000-memory.dmp

      Filesize

      120KB