Analysis

  • max time kernel
    122s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    18-10-2021 12:44

General

  • Target

    My Resume.exe

  • Size

    435KB

  • MD5

    d41623f500bff32c852bd5ec139684df

  • SHA1

    8bbb5ff29e298e9177ef97da9d35e49224b574ed

  • SHA256

    b10f498f823b8bb942232a025ee9376375d4479608658b91608096331688bc95

  • SHA512

    178ac27c01e610eea0481cd5f7b820e3a769b598e95be73b545e5470e8c42057c54d3b9fea07f98e0a56376fa02db1542bf254a46deee4759d3211a178e0e20e

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

kamuchehddhgfgf.ddns.net:1187

37.0.10.22:1187

Mutex

9ff0e8a4-a323-4111-bc49-0daecb63120d

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    37.0.10.22

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-17T00:05:39.048278936Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1187

  • 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

    9ff0e8a4-a323-4111-bc49-0daecb63120d

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    kamuchehddhgfgf.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    false

  • 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
  • Drops file in Program Files directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
    "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
      "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
      2⤵
        PID:576
      • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
        "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
        2⤵
          PID:268
        • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
          "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
          2⤵
            PID:756
          • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
            "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
            2⤵
              PID:544
            • C:\Users\Admin\AppData\Local\Temp\My Resume.exe
              "C:\Users\Admin\AppData\Local\Temp\My Resume.exe"
              2⤵
              • 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:1256

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/1256-58-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1256-59-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1256-60-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1256-61-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1256-62-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1256-63-0x000000000041E792-mapping.dmp

          • memory/1256-65-0x0000000002310000-0x0000000002311000-memory.dmp

            Filesize

            4KB

          • memory/1604-55-0x0000000075F41000-0x0000000075F43000-memory.dmp

            Filesize

            8KB

          • memory/1604-56-0x00000000005C0000-0x00000000005C1000-memory.dmp

            Filesize

            4KB

          • memory/1604-57-0x00000000005C1000-0x00000000005C2000-memory.dmp

            Filesize

            4KB