Analysis

  • max time kernel
    119s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2023, 18:20

General

  • Target

    PI7812367813.rtf

  • Size

    136KB

  • MD5

    a2e15a15841102aaa128f682ec572b41

  • SHA1

    f40dfc3f94abad4f63010239d7a55f164d74d073

  • SHA256

    7a2f9e411b75bd3fff4de3eccade17a7c72c810cd786145239ab21950e761aae

  • SHA512

    9d37fd89aadb6eac5b2f3aaac79a5ee5757d1616c7fb9ba206a58f51f3783b4e629374872f37e37e10226a179f5fea1a3ea32ad9217c2aa2ff20d84f6e19a56a

  • SSDEEP

    768:4wAbZSibMX9gRWjsU67VMS9E3uIagPFEbZLIQATaj17nQ:4wAlRvUGnE3uIa0FuZmuj17nQ

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rn72836.sytes.net:6696

127.0.0.1:6696

Mutex

3f30b298-001f-4f08-b22c-606b0d3632bd

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-09-08T19:00:17.997607436Z

  • 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

    6696

  • default_group

    rn728

  • 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

    3f30b298-001f-4f08-b22c-606b0d3632bd

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    rn72836.sytes.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 2 IoCs
  • Loads dropped DLL 1 IoCs
  • 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
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 2 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 12 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 25 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\PI7812367813.rtf"
    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:1824
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1416
    • 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:2288
      • C:\Users\Admin\AppData\Roaming\plugman75907.exe
        "C:\Users\Admin\AppData\Roaming\plugman75907.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2724
        • C:\Users\Admin\AppData\Roaming\plugman75907.exe
          "C:\Users\Admin\AppData\Roaming\plugman75907.exe"
          3⤵
          • Executes dropped EXE
          • 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:1440
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9878.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:2984
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "UDP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9A9B.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:2376

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\tmp9878.tmp

            Filesize

            1KB

            MD5

            8e3b0eae623035f63ea2615d66f690c3

            SHA1

            53e1ec94bef459f5865851da899ca36e8c237181

            SHA256

            9481f3e69976cc0f33f0ff687d7f98f9c12aabe7f27ca2e49b339dd81779ca03

            SHA512

            ad14e0138bd94cde239423adba252a8ede0b9e9b2c43d189524ae640d8fff3b9cbfa70e530506128f760a53aafa022dcb3639f9502dfc71d721215c89d5b7ea6

          • C:\Users\Admin\AppData\Local\Temp\tmp9A9B.tmp

            Filesize

            1KB

            MD5

            c1c4b266e129249076bbe8a15cc5e06c

            SHA1

            312b8173c264245c834eee91e05dcca845c341f8

            SHA256

            f336d06dcadca621be6b2dc9493dcb84d871497e65142bc9fdd72c9f250a1b7b

            SHA512

            0f02ec7700f89d95d29014eec42d13c85234351c3fe1dc6a3efeea52ea76ca4bea3151567a6c798b5ce658d481b424646b43d93e95ccad897356a87a25d45041

          • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

            Filesize

            20KB

            MD5

            b2e8cadc836252323b2d9ef66fb97b36

            SHA1

            bead4dc8b6bc5ad4d62d0e535882f0a5c9d2ede2

            SHA256

            edda1724f28d7b7af0a5a732df44b609516d2bf3963e0fe0da26b9ed4c86d841

            SHA512

            eff7bf2c3ae16e1f971b90caa5a588d66e92eb398acba7fbf23e7baa879b3bb1630269e8b4e930eb2584d3abe667517e6b84e54dbfd671418e5796b05ed42f4b

          • C:\Users\Admin\AppData\Roaming\plugman75907.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman75907.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman75907.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman75907.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • \Users\Admin\AppData\Roaming\plugman75907.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • memory/1440-29-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-40-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-67-0x00000000021C0000-0x00000000021CE000-memory.dmp

            Filesize

            56KB

          • memory/1440-66-0x00000000021B0000-0x00000000021C4000-memory.dmp

            Filesize

            80KB

          • memory/1440-65-0x00000000021A0000-0x00000000021B0000-memory.dmp

            Filesize

            64KB

          • memory/1440-64-0x0000000000980000-0x0000000000994000-memory.dmp

            Filesize

            80KB

          • memory/1440-63-0x0000000000930000-0x000000000093C000-memory.dmp

            Filesize

            48KB

          • memory/1440-27-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-61-0x0000000000910000-0x0000000000922000-memory.dmp

            Filesize

            72KB

          • memory/1440-31-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-33-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-37-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-35-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/1440-68-0x0000000004400000-0x000000000442E000-memory.dmp

            Filesize

            184KB

          • memory/1440-69-0x0000000002320000-0x0000000002334000-memory.dmp

            Filesize

            80KB

          • memory/1440-42-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1440-62-0x0000000000920000-0x000000000092E000-memory.dmp

            Filesize

            56KB

          • memory/1440-44-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

            Filesize

            6.9MB

          • memory/1440-45-0x0000000004D80000-0x0000000004DC0000-memory.dmp

            Filesize

            256KB

          • memory/1440-76-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

            Filesize

            6.9MB

          • memory/1440-77-0x0000000004D80000-0x0000000004DC0000-memory.dmp

            Filesize

            256KB

          • memory/1440-53-0x00000000003F0000-0x00000000003FA000-memory.dmp

            Filesize

            40KB

          • memory/1440-54-0x0000000000520000-0x000000000053E000-memory.dmp

            Filesize

            120KB

          • memory/1440-55-0x0000000000540000-0x000000000054A000-memory.dmp

            Filesize

            40KB

          • memory/1440-58-0x0000000000820000-0x0000000000832000-memory.dmp

            Filesize

            72KB

          • memory/1440-59-0x00000000008D0000-0x00000000008EA000-memory.dmp

            Filesize

            104KB

          • memory/1440-60-0x0000000000880000-0x000000000088E000-memory.dmp

            Filesize

            56KB

          • memory/1824-24-0x000000007112D000-0x0000000071138000-memory.dmp

            Filesize

            44KB

          • memory/1824-2-0x000000007112D000-0x0000000071138000-memory.dmp

            Filesize

            44KB

          • memory/1824-96-0x000000007112D000-0x0000000071138000-memory.dmp

            Filesize

            44KB

          • memory/1824-95-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1824-0-0x000000002F281000-0x000000002F282000-memory.dmp

            Filesize

            4KB

          • memory/1824-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/2724-22-0x0000000001EA0000-0x0000000001EBA000-memory.dmp

            Filesize

            104KB

          • memory/2724-21-0x0000000004B50000-0x0000000004B90000-memory.dmp

            Filesize

            256KB

          • memory/2724-16-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

            Filesize

            6.9MB

          • memory/2724-15-0x00000000002E0000-0x000000000038A000-memory.dmp

            Filesize

            680KB

          • memory/2724-43-0x000000006B2E0000-0x000000006B9CE000-memory.dmp

            Filesize

            6.9MB

          • memory/2724-23-0x0000000001E50000-0x0000000001E58000-memory.dmp

            Filesize

            32KB

          • memory/2724-25-0x0000000001EC0000-0x0000000001ECA000-memory.dmp

            Filesize

            40KB

          • memory/2724-26-0x0000000005320000-0x0000000005392000-memory.dmp

            Filesize

            456KB