Analysis

  • max time kernel
    120s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    19-10-2021 13:36

General

  • Target

    Invoice and waybill.exe

  • Size

    522KB

  • MD5

    9cae0efc5e46764e812450c11f385dfd

  • SHA1

    a3d56b062283d8acc79cc7310b4dcfca60a7b66f

  • SHA256

    e9431fe2082e51e40fe79444314c55e511a90ef1d8abdf9304e653cf24d22d78

  • SHA512

    eb4152cf8e038ec0b21dd4e200a78f6697eeadabef7c6b3449375c922b70fb470d80735d4507e16ada92947dfb5c4bedd140b388402f28371f3742c1dd7b039e

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 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.exe
    "C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.exe
      "C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.exe"
      2⤵
        PID:1048
      • C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.exe
        "C:\Users\Admin\AppData\Local\Temp\Invoice and waybill.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:268

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/268-58-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/268-60-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/268-61-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/268-62-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/268-59-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/268-63-0x000000000041E792-mapping.dmp

    • memory/268-65-0x00000000004A0000-0x00000000004A1000-memory.dmp

      Filesize

      4KB

    • memory/1336-55-0x0000000075B71000-0x0000000075B73000-memory.dmp

      Filesize

      8KB

    • memory/1336-56-0x00000000004A0000-0x00000000004A1000-memory.dmp

      Filesize

      4KB

    • memory/1336-57-0x00000000004A1000-0x00000000004A2000-memory.dmp

      Filesize

      4KB