Analysis

  • max time kernel
    120s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    19-10-2021 09:53

General

  • Target

    9dd402c4e1d128c436e4ce9b19d6de15.exe

  • Size

    527KB

  • MD5

    9dd402c4e1d128c436e4ce9b19d6de15

  • SHA1

    9e3c2b5f50091995d1ed5716c37070ca1c0c7740

  • SHA256

    1136206a0a4b73e98b8b91e65b4baede18ee256f9b0a0d618f822def629f0557

  • SHA512

    696a946c83e427a631938d75a844a91370d25dd97ba3e3fda29037c93cbdf4e5a44ee87ebc36bfc085be8972edd7d9f7aa36b349e1b99fcb1d0d4c5a55ec406d

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

drrkingsleym001.ddns.net:1665

Mutex

70bb352e-dceb-4105-9fdd-010e83e28b1b

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    drrkingsleym001.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2021-07-31T04:41:53.700956836Z

  • 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

    1665

  • default_group

    NEW LIFE

  • 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

    70bb352e-dceb-4105-9fdd-010e83e28b1b

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    drrkingsleym001.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
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9dd402c4e1d128c436e4ce9b19d6de15.exe
    "C:\Users\Admin\AppData\Local\Temp\9dd402c4e1d128c436e4ce9b19d6de15.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1676
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tkoeFxDAtw" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB97.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1764
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1816
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFED8.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1236
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "SMTP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpDC.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1596

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

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

    MD5

    cfae5a3b7d8aa9653fe2512578a0d23a

    SHA1

    a91a2f8daef114f89038925ada6784646a0a5b12

    SHA256

    2ab741415f193a2a9134eac48a2310899d18efb5e61c3e81c35140a7efea30fa

    SHA512

    9dfd7eca6924ae2785ce826a447b6ce6d043c552fbd3b8a804ce6722b07a74900e703dc56cd4443cae9ab9601f21a6068e29771e48497a9ae434096a11814e84

  • C:\Users\Admin\AppData\Local\Temp\tmpFED8.tmp

    MD5

    40b11ef601fb28f9b2e69d36857bf2ec

    SHA1

    b6454020ad2ceed193f4792b77001d0bd741b370

    SHA256

    c51e12d18cc664425f6711d8ae2507068884c7057092cfa11884100e1e9d49e1

    SHA512

    e3c5bcc714cbfca4b8058ddcddf231dcefa69c15881ce3f8123e59ed45cfb5da052b56e1945dcf8dc7f800d62f9a4eecb82bca69a66a1530787aeffeb15e2bd5

  • memory/1236-66-0x0000000000000000-mapping.dmp

  • memory/1596-68-0x0000000000000000-mapping.dmp

  • memory/1676-55-0x0000000000150000-0x0000000000151000-memory.dmp

    Filesize

    4KB

  • memory/1676-56-0x0000000000151000-0x0000000000152000-memory.dmp

    Filesize

    4KB

  • memory/1676-54-0x00000000754F1000-0x00000000754F3000-memory.dmp

    Filesize

    8KB

  • memory/1764-57-0x0000000000000000-mapping.dmp

  • memory/1816-58-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1816-63-0x000000000041E792-mapping.dmp

  • memory/1816-65-0x0000000002020000-0x0000000002021000-memory.dmp

    Filesize

    4KB

  • memory/1816-62-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1816-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1816-60-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1816-59-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/1816-70-0x0000000002021000-0x0000000002022000-memory.dmp

    Filesize

    4KB

  • memory/1816-71-0x0000000002026000-0x0000000002037000-memory.dmp

    Filesize

    68KB