Analysis

  • max time kernel
    151s
  • max time network
    93s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26/11/2022, 23:36

General

  • Target

    9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb.exe

  • Size

    677KB

  • MD5

    2a73e0d44381ae381096e16fe65bf261

  • SHA1

    c3d74e27272eebdaab0ff7e9da176a6038803809

  • SHA256

    9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

  • SHA512

    646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

  • SSDEEP

    12288:PaCS+UAgUwBx8QshoIjrmeJNZ+k/EwjOMeEB0LMDPfLFigRg+KbSB0Df7:CCS+UPUwBmogDJNwkJjOMe2PjRg7SuD

Malware Config

Extracted

Family

nanocore

Version

1.2.1.1

C2

asusdriverupdate.no-ip.org:58010

Mutex

5151db03-9ae5-4edf-9ae4-275f9e70f68f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

  • buffer_size

    65535

  • build_time

    2014-10-14T05:42:06.265609536Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    58010

  • default_group

    Wave Tavu

  • 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

    5151db03-9ae5-4edf-9ae4-275f9e70f68f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    asusdriverupdate.no-ip.org

  • primary_dns_server

  • 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

    1.2.1.1

  • wan_timeout

    8000

Signatures

  • NanoCore

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

  • Executes dropped EXE 2 IoCs
  • Drops startup file 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

    Disk information is often read in order to detect sandboxing environments.

  • 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 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb.exe
    "C:\Users\Admin\AppData\Local\Temp\9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb.exe"
    1⤵
    • Loads dropped DLL
    • Maps connected drives based on registry
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1388
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ASUS Live Update" /t REG_SZ /d "C:\ProgramData\SixEngine.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:952
      • C:\Windows\SysWOW64\reg.exe
        reg add "HKLM\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ASUS Live Update" /t REG_SZ /d "C:\ProgramData\SixEngine.exe"
        3⤵
        • Adds Run key to start application
        PID:1732
    • C:\ProgramData\SixEngine.exe
      C:\ProgramData\SixEngine.exe
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Maps connected drives based on registry
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1956
      • C:\ProgramData\SixEngine.exe
        "C:\ProgramData\SixEngine.exe"
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1672

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\SixEngine.exe

          Filesize

          677KB

          MD5

          2a73e0d44381ae381096e16fe65bf261

          SHA1

          c3d74e27272eebdaab0ff7e9da176a6038803809

          SHA256

          9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

          SHA512

          646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

        • C:\ProgramData\SixEngine.exe

          Filesize

          677KB

          MD5

          2a73e0d44381ae381096e16fe65bf261

          SHA1

          c3d74e27272eebdaab0ff7e9da176a6038803809

          SHA256

          9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

          SHA512

          646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

        • C:\ProgramData\SixEngine.exe

          Filesize

          677KB

          MD5

          2a73e0d44381ae381096e16fe65bf261

          SHA1

          c3d74e27272eebdaab0ff7e9da176a6038803809

          SHA256

          9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

          SHA512

          646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

        • \ProgramData\SixEngine.exe

          Filesize

          677KB

          MD5

          2a73e0d44381ae381096e16fe65bf261

          SHA1

          c3d74e27272eebdaab0ff7e9da176a6038803809

          SHA256

          9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

          SHA512

          646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

        • \ProgramData\SixEngine.exe

          Filesize

          677KB

          MD5

          2a73e0d44381ae381096e16fe65bf261

          SHA1

          c3d74e27272eebdaab0ff7e9da176a6038803809

          SHA256

          9d14c92b681adb658c040d08c098e8adb277ca37ec9850eff15cb1161335cfdb

          SHA512

          646ea95c2b12e1b9030c0bcdf967380e8eb3c3b40b7174f8a3d4b84171b609fba1339610f21e01b14a1062d52a6fafbd499924dbdc082df3cfef2d8ae9c9b1c0

        • memory/1388-65-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1388-55-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1388-56-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1388-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

          Filesize

          8KB

        • memory/1672-67-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-79-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-83-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1672-70-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-68-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-71-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-73-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1672-81-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1672-77-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1956-66-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB

        • memory/1956-82-0x0000000074C70000-0x000000007521B000-memory.dmp

          Filesize

          5.7MB