Analysis

  • max time kernel
    270s
  • max time network
    301s
  • platform
    windows7_x64
  • resource
    win7-20231023-en
  • resource tags

    arch:x64arch:x86image:win7-20231023-enlocale:en-usos:windows7-x64system
  • submitted
    29/11/2023, 14:34

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:1140
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:1912
    • 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:2768
      • 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:2684
        • 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:1968
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DPI Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEDF7.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:2748
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "DPI Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpEF7E.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:2024

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\tmpEDF7.tmp

            Filesize

            1KB

            MD5

            8e3b0eae623035f63ea2615d66f690c3

            SHA1

            53e1ec94bef459f5865851da899ca36e8c237181

            SHA256

            9481f3e69976cc0f33f0ff687d7f98f9c12aabe7f27ca2e49b339dd81779ca03

            SHA512

            ad14e0138bd94cde239423adba252a8ede0b9e9b2c43d189524ae640d8fff3b9cbfa70e530506128f760a53aafa022dcb3639f9502dfc71d721215c89d5b7ea6

          • C:\Users\Admin\AppData\Local\Temp\tmpEF7E.tmp

            Filesize

            1KB

            MD5

            5fea24e883e06e4df6d240dc72abf2c5

            SHA1

            d778bf0f436141e02df4b421e8188abdcc9a84a4

            SHA256

            e858982f4ab3c74f7a8903eea18c0f73501a77273ae38b54d5c9dec997e79a66

            SHA512

            15afc2ffbbee14d28a5ff8dc8285d01c942147aada36fb33e31045a4e998769b51738bebe199bcad3462f918b535845a893aa2f80c84b9c795cd1fee4a327924

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

            Filesize

            20KB

            MD5

            9f8b3afaa14b3c3a02bb4bc92ad26999

            SHA1

            02717851ac03ab417043934b1fdc30ea09cc67de

            SHA256

            ea5ce9b31834d0529e66a45cf3f9c71abd8c7812bf6fe1c8143858c1cd5017ed

            SHA512

            e0a7b3870a8bdeb782bdac737ff06067bfbe47bdcbd3273454550c5fbf6e894de94d56ad290a23c155cd503198ae0819f39e0138f0fa2fa7ad8b5a350f0f965d

          • 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/1140-88-0x000000007106D000-0x0000000071078000-memory.dmp

            Filesize

            44KB

          • memory/1140-87-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1140-0-0x000000002F561000-0x000000002F562000-memory.dmp

            Filesize

            4KB

          • memory/1140-2-0x000000007106D000-0x0000000071078000-memory.dmp

            Filesize

            44KB

          • memory/1140-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1140-39-0x000000007106D000-0x0000000071078000-memory.dmp

            Filesize

            44KB

          • memory/1968-58-0x0000000002280000-0x000000000228E000-memory.dmp

            Filesize

            56KB

          • memory/1968-51-0x00000000003F0000-0x00000000003FA000-memory.dmp

            Filesize

            40KB

          • memory/1968-28-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-29-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-30-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/1968-32-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-26-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-35-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-69-0x0000000000480000-0x00000000004C0000-memory.dmp

            Filesize

            256KB

          • memory/1968-38-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-68-0x000000006AD10000-0x000000006B3FE000-memory.dmp

            Filesize

            6.9MB

          • memory/1968-40-0x000000006AD10000-0x000000006B3FE000-memory.dmp

            Filesize

            6.9MB

          • memory/1968-41-0x0000000000480000-0x00000000004C0000-memory.dmp

            Filesize

            256KB

          • memory/1968-65-0x0000000004460000-0x0000000004474000-memory.dmp

            Filesize

            80KB

          • memory/1968-64-0x00000000043F0000-0x000000000441E000-memory.dmp

            Filesize

            184KB

          • memory/1968-49-0x00000000003E0000-0x00000000003EA000-memory.dmp

            Filesize

            40KB

          • memory/1968-50-0x0000000000610000-0x000000000062E000-memory.dmp

            Filesize

            120KB

          • memory/1968-27-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/1968-54-0x0000000000680000-0x0000000000692000-memory.dmp

            Filesize

            72KB

          • memory/1968-55-0x0000000000690000-0x00000000006AA000-memory.dmp

            Filesize

            104KB

          • memory/1968-56-0x0000000002040000-0x000000000204E000-memory.dmp

            Filesize

            56KB

          • memory/1968-57-0x0000000002180000-0x0000000002192000-memory.dmp

            Filesize

            72KB

          • memory/1968-63-0x00000000043D0000-0x00000000043DE000-memory.dmp

            Filesize

            56KB

          • memory/1968-59-0x0000000002290000-0x000000000229C000-memory.dmp

            Filesize

            48KB

          • memory/1968-60-0x00000000022A0000-0x00000000022B4000-memory.dmp

            Filesize

            80KB

          • memory/1968-61-0x00000000043B0000-0x00000000043C0000-memory.dmp

            Filesize

            64KB

          • memory/1968-62-0x00000000043C0000-0x00000000043D4000-memory.dmp

            Filesize

            80KB

          • memory/2684-22-0x0000000000570000-0x000000000058A000-memory.dmp

            Filesize

            104KB

          • memory/2684-23-0x0000000000590000-0x0000000000598000-memory.dmp

            Filesize

            32KB

          • memory/2684-24-0x00000000005A0000-0x00000000005AA000-memory.dmp

            Filesize

            40KB

          • memory/2684-25-0x0000000005AD0000-0x0000000005B42000-memory.dmp

            Filesize

            456KB

          • memory/2684-37-0x000000006ACD0000-0x000000006B3BE000-memory.dmp

            Filesize

            6.9MB

          • memory/2684-17-0x0000000004C00000-0x0000000004C40000-memory.dmp

            Filesize

            256KB

          • memory/2684-16-0x000000006ACD0000-0x000000006B3BE000-memory.dmp

            Filesize

            6.9MB

          • memory/2684-14-0x0000000000A00000-0x0000000000AAA000-memory.dmp

            Filesize

            680KB