Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    21-09-2022 06:12

General

  • Target

    d68c1898ceffa72ba1ac579c83cc494c.exe

  • Size

    180KB

  • MD5

    d68c1898ceffa72ba1ac579c83cc494c

  • SHA1

    0cbea644e19ae6d3b934a648b5bd1a9558c64e96

  • SHA256

    3d9862ee74e3315354f5423cb0617d65b1a6793821377f3380e6f4a5962598dc

  • SHA512

    35b09232dd1abb7d23910e64d09e6bebd43bc2469c6e4d44a2a4ed8fd88051ec0d08206a8fce25f1efb5aa85cefb9a8d87ddf9adb026029894c5481a19bb1b43

  • SSDEEP

    1536:0GBVDgKMoum8X/ScqsClbZ5hapDbEJ0XIPnG+aaMrIl0PegZoZZZZZZZZZZZZZgJ:0muRjClb81C5adRQQelxyAx9fCTt

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

95.70.139.81:54984

Mutex

2afd92d3-82ee-48f4-9de3-98029fbb1ca4

Attributes
  • activate_away_mode

    false

  • backup_connection_host

    95.70.139.81

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-01T08:20:47.457547136Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    54984

  • 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

    2afd92d3-82ee-48f4-9de3-98029fbb1ca4

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    95.70.139.81

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • set_critical_process

    false

  • 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.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d68c1898ceffa72ba1ac579c83cc494c.exe
    "C:\Users\Admin\AppData\Local\Temp\d68c1898ceffa72ba1ac579c83cc494c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:852
    • C:\Users\Admin\AppData\Local\Temp\d68c1898ceffa72ba1ac579c83cc494c.exe
      "C:\Users\Admin\AppData\Local\Temp\d68c1898ceffa72ba1ac579c83cc494c.exe"
      2⤵
        PID:584
      • C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe
        C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1892
        • C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe
          "C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe"
          3⤵
          • Executes dropped EXE
          • 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:1556

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe

      Filesize

      486KB

      MD5

      9c44d904890df75e5f1b7c3c3ba0b7db

      SHA1

      2aea8311e7e1178396d5308d3853b6dc0334f849

      SHA256

      e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

      SHA512

      bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

    • C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe

      Filesize

      486KB

      MD5

      9c44d904890df75e5f1b7c3c3ba0b7db

      SHA1

      2aea8311e7e1178396d5308d3853b6dc0334f849

      SHA256

      e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

      SHA512

      bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

    • C:\Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe

      Filesize

      486KB

      MD5

      9c44d904890df75e5f1b7c3c3ba0b7db

      SHA1

      2aea8311e7e1178396d5308d3853b6dc0334f849

      SHA256

      e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

      SHA512

      bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

    • \Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe

      Filesize

      486KB

      MD5

      9c44d904890df75e5f1b7c3c3ba0b7db

      SHA1

      2aea8311e7e1178396d5308d3853b6dc0334f849

      SHA256

      e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

      SHA512

      bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

    • \Users\Admin\AppData\Local\Temp\IAppIdAuthority.exe

      Filesize

      486KB

      MD5

      9c44d904890df75e5f1b7c3c3ba0b7db

      SHA1

      2aea8311e7e1178396d5308d3853b6dc0334f849

      SHA256

      e7763c3bb26ac869ce31f856dbd583c7b64979afcadbbcff4618c7d42c1feb6d

      SHA512

      bcf9af878879865941d85934df601fb00afc59d8bf2191b609c8d11ccf2205d100aea80c74118783e3e5f19b893a9c3dd2aff4db2792c3205645662661f69788

    • memory/584-61-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-62-0x0000000000402EEE-mapping.dmp

    • memory/584-64-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-66-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-59-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-58-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-57-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/584-60-0x0000000000400000-0x0000000000408000-memory.dmp

      Filesize

      32KB

    • memory/852-56-0x0000000000270000-0x0000000000282000-memory.dmp

      Filesize

      72KB

    • memory/852-54-0x0000000001350000-0x0000000001384000-memory.dmp

      Filesize

      208KB

    • memory/852-55-0x0000000074E41000-0x0000000074E43000-memory.dmp

      Filesize

      8KB

    • memory/1556-75-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-89-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-96-0x0000000000610000-0x000000000061A000-memory.dmp

      Filesize

      40KB

    • memory/1556-76-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-78-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-79-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-82-0x000000000041E792-mapping.dmp

    • memory/1556-95-0x00000000005E0000-0x00000000005FE000-memory.dmp

      Filesize

      120KB

    • memory/1556-84-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-85-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1556-94-0x00000000005D0000-0x00000000005DA000-memory.dmp

      Filesize

      40KB

    • memory/1556-92-0x0000000000080000-0x00000000000B8000-memory.dmp

      Filesize

      224KB

    • memory/1892-73-0x00000000004A0000-0x00000000004B0000-memory.dmp

      Filesize

      64KB

    • memory/1892-68-0x0000000000000000-mapping.dmp

    • memory/1892-71-0x0000000000210000-0x0000000000290000-memory.dmp

      Filesize

      512KB