Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    14/11/2022, 07:02

General

  • Target

    112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5.exe

  • Size

    1.8MB

  • MD5

    11eb0dd8239cfec0e1b8e55b7d6c3688

  • SHA1

    ac67d05ea9de4dea723da346d027d8744a40e6bf

  • SHA256

    112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5

  • SHA512

    dae1bcca351572876430c0dc23e5a5389c978683628c1f6e321f9f858052b90b08bdfebe87b98e716cf2e1f2c65948bf44d242a2c3221933d018fbd99143d8dd

  • SSDEEP

    24576:8i56XwFnb6e49Pu0CCnYQb6VO9iovKHRKc:

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rze6.sytes.net:8000

Mutex

0aeffa29-f3e3-4c27-b5c4-5ee7e27a451f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-19T10:27:50.574421636Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    8000

  • default_group

    OCT

  • 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

    0aeffa29-f3e3-4c27-b5c4-5ee7e27a451f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    rze6.sytes.net

  • 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.

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5.exe
    "C:\Users\Admin\AppData\Local\Temp\112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1124
    • C:\Users\Admin\AppData\Local\Temp\112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5.exe
      C:\Users\Admin\AppData\Local\Temp\112843e910e5bef697600933153dfc07852c3b6c5c1d1e2258da31c1c50d1fb5.exe
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:336

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/336-69-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-78-0x0000000000840000-0x000000000084A000-memory.dmp

          Filesize

          40KB

        • memory/336-64-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-77-0x0000000000820000-0x000000000083E000-memory.dmp

          Filesize

          120KB

        • memory/336-76-0x0000000000580000-0x000000000058A000-memory.dmp

          Filesize

          40KB

        • memory/336-74-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-72-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-63-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-66-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/336-67-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1124-62-0x000000006F090000-0x000000006F63B000-memory.dmp

          Filesize

          5.7MB

        • memory/1124-61-0x000000006F090000-0x000000006F63B000-memory.dmp

          Filesize

          5.7MB

        • memory/1124-60-0x000000006F090000-0x000000006F63B000-memory.dmp

          Filesize

          5.7MB

        • memory/1696-57-0x0000000005F70000-0x0000000006002000-memory.dmp

          Filesize

          584KB

        • memory/1696-54-0x0000000001100000-0x00000000012D0000-memory.dmp

          Filesize

          1.8MB

        • memory/1696-55-0x00000000766D1000-0x00000000766D3000-memory.dmp

          Filesize

          8KB

        • memory/1696-56-0x0000000005DA0000-0x0000000005E8A000-memory.dmp

          Filesize

          936KB