Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-01-2021 07:32

General

  • Target

    NEWORDER_ KV19FJ004_BUYER_FJALLRAVEN_SS20_MAIN_BUY_KANAAN SAIGON_CO_LTD.exe

  • Size

    817KB

  • MD5

    2d159f88e58c347b489806f65eb1c8d4

  • SHA1

    14fec7e5aee30f48db11e69beb996f6749c7b7a9

  • SHA256

    f0e8a1fd19b063d6ae2c2ca986ef158c9a802caccb7107d4d209c0311e9de602

  • SHA512

    9375d5003afb5681a75a074e11cd10f5cc362a19503fb30468eab41900d23733289014cb24f76af1ccc101d0bcc1b19e93bb7d6b54b3b526c0fcf9f9167583e4

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

185.140.53.176:3765

Mutex

82fc2933-5a5f-4489-9daa-c2dc48469e2f

Attributes
  • activate_away_mode

    true

  • backup_connection_host

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-11-06T00:47:56.924731936Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    3765

  • default_group

    BIZ SALES

  • 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

    82fc2933-5a5f-4489-9daa-c2dc48469e2f

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    185.140.53.176

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 5 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\NEWORDER_ KV19FJ004_BUYER_FJALLRAVEN_SS20_MAIN_BUY_KANAAN SAIGON_CO_LTD.exe
    "C:\Users\Admin\AppData\Local\Temp\NEWORDER_ KV19FJ004_BUYER_FJALLRAVEN_SS20_MAIN_BUY_KANAAN SAIGON_CO_LTD.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1044
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\daTSnumYKxTn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEF5E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1452
    • C:\Users\Admin\AppData\Local\Temp\NEWORDER_ KV19FJ004_BUYER_FJALLRAVEN_SS20_MAIN_BUY_KANAAN SAIGON_CO_LTD.exe
      "{path}"
      2⤵
        PID:824
      • C:\Users\Admin\AppData\Local\Temp\NEWORDER_ KV19FJ004_BUYER_FJALLRAVEN_SS20_MAIN_BUY_KANAAN SAIGON_CO_LTD.exe
        "{path}"
        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
        • Suspicious use of WriteProcessMemory
        PID:776
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NTFS Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF68F.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1060
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "NTFS Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpF71C.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1148

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmpEF5E.tmp

      MD5

      b5f419b3f72b4b5699c46a1253dde126

      SHA1

      2ae052d0dcf39f2b854e852ec1a9a92275471f21

      SHA256

      45bd4c89d06560dd55f50558502aa762f8a27ad2e9a0cb6a9cfdac69347bb831

      SHA512

      8537dd9c7cc946d7801bc75d79405f6d454854abdbef587cc9307c5f54fdffe24500a87427d3389eed466dff8790cfc857d675c40c668a682e41daa897d4ce83

    • C:\Users\Admin\AppData\Local\Temp\tmpF68F.tmp

      MD5

      5330ca1ad7b6f968f5c85fc02ae493c2

      SHA1

      24f910f60b628510a734adb841edc299a46929a3

      SHA256

      108027356addec0801099cc3649f5a160c8c4c970ce1830b412ff6fbccef1bf4

      SHA512

      74bc61b6fed7e22bcfebb3b68f0dd6cb4aee8bc2074e40a277dc846aaa6ed992a20dfa635007e06bb01783325b3b20edb6df7035abe9dbe08b7cabb6f0c59171

    • C:\Users\Admin\AppData\Local\Temp\tmpF71C.tmp

      MD5

      41808f05a9aa523d0ef506d4993f1d6c

      SHA1

      5a228145decf63ebbbd673c9b7c08a86236a22d4

      SHA256

      f76bd5da395a725b5998efab9a5d3160657cf2d44a8be83fa24af6ba29acf731

      SHA512

      7cf71f8fd8dccaa8cf2c724afca3178be8b7a6e0cc6e4b44990e96413bd0dac8248e2bcfa1bb82da05efb6c4b46649722c20ce14cf4a44f1720e18732bd9246e

    • memory/776-15-0x0000000004DD0000-0x0000000004DD1000-memory.dmp

      Filesize

      4KB

    • memory/776-22-0x0000000000A00000-0x0000000000A03000-memory.dmp

      Filesize

      12KB

    • memory/776-21-0x0000000000A90000-0x0000000000AA9000-memory.dmp

      Filesize

      100KB

    • memory/776-20-0x0000000000640000-0x0000000000645000-memory.dmp

      Filesize

      20KB

    • memory/776-10-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/776-11-0x000000000041E792-mapping.dmp

    • memory/776-12-0x0000000074110000-0x00000000747FE000-memory.dmp

      Filesize

      6.9MB

    • memory/776-13-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1044-7-0x0000000004680000-0x00000000046DE000-memory.dmp

      Filesize

      376KB

    • memory/1044-2-0x0000000074110000-0x00000000747FE000-memory.dmp

      Filesize

      6.9MB

    • memory/1044-6-0x00000000002A0000-0x00000000002A4000-memory.dmp

      Filesize

      16KB

    • memory/1044-5-0x0000000000610000-0x0000000000611000-memory.dmp

      Filesize

      4KB

    • memory/1044-3-0x00000000010A0000-0x00000000010A1000-memory.dmp

      Filesize

      4KB

    • memory/1060-16-0x0000000000000000-mapping.dmp

    • memory/1148-18-0x0000000000000000-mapping.dmp

    • memory/1452-8-0x0000000000000000-mapping.dmp