Analysis

  • max time kernel
    121s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19-10-2021 08:07

General

  • Target

    SWIFT COPY.doc

  • Size

    96KB

  • MD5

    e1bae052d5a86db65ee38990c31e0423

  • SHA1

    c3f4d4d6e77b8f3d57812d0429b8af8c5fbbca5e

  • SHA256

    ee64931dac0ae1f14004a8ad48b72bb09c7fe456e8e52015ea9fef7b69c0fde5

  • SHA512

    8325f061f961cae5983d5caddec3c305004c786b05bb84aa53dd0c9d4b07eb5d30a3488c55802283462367987dce659f160c60fde16eea045f255d06d8010ac3

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.

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\SWIFT COPY.doc"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1736
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:656
      • C:\Users\Admin\AppData\Roaming\catgwo8693.exe
        "C:\Users\Admin\AppData\Roaming\catgwo8693.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:748
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tkoeFxDAtw" /XML "C:\Users\Admin\AppData\Local\Temp\tmp99DF.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:1476
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
          3⤵
          • 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:2000
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9C11.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1592
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9CCD.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:720

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp9C11.tmp

      MD5

      40b11ef601fb28f9b2e69d36857bf2ec

      SHA1

      b6454020ad2ceed193f4792b77001d0bd741b370

      SHA256

      c51e12d18cc664425f6711d8ae2507068884c7057092cfa11884100e1e9d49e1

      SHA512

      e3c5bcc714cbfca4b8058ddcddf231dcefa69c15881ce3f8123e59ed45cfb5da052b56e1945dcf8dc7f800d62f9a4eecb82bca69a66a1530787aeffeb15e2bd5

    • C:\Users\Admin\AppData\Local\Temp\tmp9CCD.tmp

      MD5

      c4aecdef99eba873119e79616df3f4b0

      SHA1

      b1b3af52655fb633eed909dfed05b64fbbfac37c

      SHA256

      24fd0d87bea36a024449a95f808aaa174e4ed9003cb8a427b67c02411b8a2e0b

      SHA512

      e3f44b07267fccf4f5abd4efe80f2b037ddadc4cb898bdfca9d21ac5d79fcac828950065c2060d3ce125ee971fc3096183afee5287ba9951fbbda7257d8ed8d4

    • C:\Users\Admin\AppData\Roaming\catgwo8693.exe

      MD5

      9dd402c4e1d128c436e4ce9b19d6de15

      SHA1

      9e3c2b5f50091995d1ed5716c37070ca1c0c7740

      SHA256

      1136206a0a4b73e98b8b91e65b4baede18ee256f9b0a0d618f822def629f0557

      SHA512

      696a946c83e427a631938d75a844a91370d25dd97ba3e3fda29037c93cbdf4e5a44ee87ebc36bfc085be8972edd7d9f7aa36b349e1b99fcb1d0d4c5a55ec406d

    • C:\Users\Admin\AppData\Roaming\catgwo8693.exe

      MD5

      9dd402c4e1d128c436e4ce9b19d6de15

      SHA1

      9e3c2b5f50091995d1ed5716c37070ca1c0c7740

      SHA256

      1136206a0a4b73e98b8b91e65b4baede18ee256f9b0a0d618f822def629f0557

      SHA512

      696a946c83e427a631938d75a844a91370d25dd97ba3e3fda29037c93cbdf4e5a44ee87ebc36bfc085be8972edd7d9f7aa36b349e1b99fcb1d0d4c5a55ec406d

    • \Users\Admin\AppData\Roaming\catgwo8693.exe

      MD5

      9dd402c4e1d128c436e4ce9b19d6de15

      SHA1

      9e3c2b5f50091995d1ed5716c37070ca1c0c7740

      SHA256

      1136206a0a4b73e98b8b91e65b4baede18ee256f9b0a0d618f822def629f0557

      SHA512

      696a946c83e427a631938d75a844a91370d25dd97ba3e3fda29037c93cbdf4e5a44ee87ebc36bfc085be8972edd7d9f7aa36b349e1b99fcb1d0d4c5a55ec406d

    • memory/720-78-0x0000000000000000-mapping.dmp

    • memory/748-64-0x0000000002071000-0x0000000002072000-memory.dmp

      Filesize

      4KB

    • memory/748-59-0x0000000000000000-mapping.dmp

    • memory/748-63-0x0000000002070000-0x0000000002071000-memory.dmp

      Filesize

      4KB

    • memory/1476-67-0x0000000000000000-mapping.dmp

    • memory/1592-75-0x0000000000000000-mapping.dmp

    • memory/1736-66-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

      Filesize

      8KB

    • memory/1736-65-0x0000000000000000-mapping.dmp

    • memory/1768-53-0x0000000072A31000-0x0000000072A34000-memory.dmp

      Filesize

      12KB

    • memory/1768-82-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1768-54-0x00000000704B1000-0x00000000704B3000-memory.dmp

      Filesize

      8KB

    • memory/1768-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1768-56-0x0000000075821000-0x0000000075823000-memory.dmp

      Filesize

      8KB

    • memory/2000-70-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2000-73-0x000000000041E792-mapping.dmp

    • memory/2000-72-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2000-77-0x00000000005D0000-0x00000000005D1000-memory.dmp

      Filesize

      4KB

    • memory/2000-71-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2000-69-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/2000-81-0x00000000005D6000-0x00000000005E7000-memory.dmp

      Filesize

      68KB

    • memory/2000-80-0x00000000005D1000-0x00000000005D2000-memory.dmp

      Filesize

      4KB

    • memory/2000-68-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB