Analysis

  • max time kernel
    119s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-20231025-en
  • resource tags

    arch:x64arch:x86image:win7-20231025-enlocale:en-usos:windows7-x64system
  • submitted
    30/11/2023, 16:52

General

  • Target

    5cdd0eea11c3a986453ba11e2d2f5dfe8df3d5182c498e9d49b61bb5f1a07977doc.rtf

  • Size

    123KB

  • MD5

    00bc84ea46871a6109ea431895212de6

  • SHA1

    a39d7050310f899c6f90a32965fdae7510b7dc6a

  • SHA256

    5cdd0eea11c3a986453ba11e2d2f5dfe8df3d5182c498e9d49b61bb5f1a07977

  • SHA512

    ee41df4b47e29d6199f51554e975fab2a80ccb8f8a93880b37641cfd263a313a076580a6bd4f1bb497a41ef73092a3363dafe906ab722d0daff352e993afc360

  • SSDEEP

    768:qwAbZSibMX9gRWjTKJQN43etP6v58aKfjmbLfDOCC7RyLVIm66Sm:qwAlRKNCrv4fjCLfDOCrBr6s

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 3 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 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 29 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\5cdd0eea11c3a986453ba11e2d2f5dfe8df3d5182c498e9d49b61bb5f1a07977doc.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:1740
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:336
    • 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:2580
      • C:\Users\Admin\AppData\Roaming\plugman29036.exe
        "C:\Users\Admin\AppData\Roaming\plugman29036.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2712
        • C:\Users\Admin\AppData\Roaming\plugman29036.exe
          "C:\Users\Admin\AppData\Roaming\plugman29036.exe"
          3⤵
          • Executes dropped EXE
          PID:436
        • C:\Users\Admin\AppData\Roaming\plugman29036.exe
          "C:\Users\Admin\AppData\Roaming\plugman29036.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:2304
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "AGP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpE8E8.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1632
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "AGP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp10E3.tmp"
            4⤵
            • Creates scheduled task(s)
            PID:1036

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\tmp10E3.tmp

            Filesize

            1KB

            MD5

            8aefdc623880016d77594b1802f74db6

            SHA1

            17608aaab6106247dec66a472516d023272c9b9b

            SHA256

            ccd9d374a356e8635fe06015e07c986fb0e6f71099234ddc2935a6cb5e1571ac

            SHA512

            bde73cc8244dcb054ff68b86df14ae644b0816aac8524e746e9bf0e68406c6d7e8ee6a0c642b11a9b197319b023c43fcbdc5eafe9c32e4011ad8065cea0b1eb5

          • C:\Users\Admin\AppData\Local\Temp\tmpE8E8.tmp

            Filesize

            1KB

            MD5

            87d51fa1cc254273b019f5828ea7194f

            SHA1

            692dd452d56c655e4f7a044a4c785bd82d3b2a57

            SHA256

            1d50bc377216f796fafc72544836c5a2b9d6a51d0bc855c6ecf92b270dbc9f8c

            SHA512

            477c1396421ccfc12d62a8f1c9744b7e9c695d98b12ea02fbd76a1b9760587a7075e24e512c19fdd305c5933e20bcc22e8d9848f7281a1927bea5a62292cada2

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

            Filesize

            20KB

            MD5

            3ac7b7512ad555b1489869642130c77e

            SHA1

            17e583c05a912066f32261e8e41232f442b2cb99

            SHA256

            900c2ae02948b9979dfeba18b199f1cabb7361c43929378d51ac94a3452c5fe6

            SHA512

            7f0d47d16cf903fca80661d79bfc560c020b0be2eb8b21017c446ef2294af1b7da49a0cefd31a6a9155ada6aa3b3dea592e4bab33fb5f17063dc207fb961af0d

          • C:\Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • C:\Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • \Users\Admin\AppData\Roaming\plugman29036.exe

            Filesize

            654KB

            MD5

            d0cc28fddecca60c208ae56d78014e95

            SHA1

            34069e3897de6509b630f9b65b067ae9a74baffc

            SHA256

            e3f6a75a8004412643549e095af1150d8329a3c46a06aef839842b90d54933a5

            SHA512

            68626b0f448af738fdc41b4c8f71adb956d6ea29e5cd843ad71902b59f6beee88b42805ee50387749b05f2a019f56f45b2efa443883c6d7afd9edcc66d518d80

          • memory/1740-94-0x00000000716AD000-0x00000000716B8000-memory.dmp

            Filesize

            44KB

          • memory/1740-93-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/1740-0-0x000000002F741000-0x000000002F742000-memory.dmp

            Filesize

            4KB

          • memory/1740-2-0x00000000716AD000-0x00000000716B8000-memory.dmp

            Filesize

            44KB

          • memory/1740-24-0x00000000716AD000-0x00000000716B8000-memory.dmp

            Filesize

            44KB

          • memory/1740-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

            Filesize

            64KB

          • memory/2304-65-0x0000000000860000-0x000000000086E000-memory.dmp

            Filesize

            56KB

          • memory/2304-58-0x0000000000510000-0x000000000051A000-memory.dmp

            Filesize

            40KB

          • memory/2304-30-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-75-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

            Filesize

            256KB

          • memory/2304-33-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-35-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-37-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-39-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            Filesize

            4KB

          • memory/2304-41-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-74-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

            Filesize

            6.9MB

          • memory/2304-44-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-72-0x0000000000E70000-0x0000000000E84000-memory.dmp

            Filesize

            80KB

          • memory/2304-47-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/2304-48-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

            Filesize

            6.9MB

          • memory/2304-49-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

            Filesize

            256KB

          • memory/2304-71-0x0000000004E90000-0x0000000004EBE000-memory.dmp

            Filesize

            184KB

          • memory/2304-70-0x0000000000C30000-0x0000000000C3E000-memory.dmp

            Filesize

            56KB

          • memory/2304-56-0x00000000004A0000-0x00000000004AA000-memory.dmp

            Filesize

            40KB

          • memory/2304-57-0x00000000004B0000-0x00000000004CE000-memory.dmp

            Filesize

            120KB

          • memory/2304-69-0x0000000000C20000-0x0000000000C34000-memory.dmp

            Filesize

            80KB

          • memory/2304-61-0x0000000000590000-0x00000000005A2000-memory.dmp

            Filesize

            72KB

          • memory/2304-62-0x00000000005B0000-0x00000000005CA000-memory.dmp

            Filesize

            104KB

          • memory/2304-63-0x0000000000830000-0x000000000083E000-memory.dmp

            Filesize

            56KB

          • memory/2304-64-0x0000000000850000-0x0000000000862000-memory.dmp

            Filesize

            72KB

          • memory/2304-68-0x0000000000B60000-0x0000000000B70000-memory.dmp

            Filesize

            64KB

          • memory/2304-66-0x0000000000870000-0x000000000087C000-memory.dmp

            Filesize

            48KB

          • memory/2304-67-0x0000000000B10000-0x0000000000B24000-memory.dmp

            Filesize

            80KB

          • memory/2712-22-0x0000000000500000-0x000000000051A000-memory.dmp

            Filesize

            104KB

          • memory/2712-29-0x0000000004FC0000-0x0000000005032000-memory.dmp

            Filesize

            456KB

          • memory/2712-23-0x0000000000520000-0x0000000000528000-memory.dmp

            Filesize

            32KB

          • memory/2712-25-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

            Filesize

            6.9MB

          • memory/2712-46-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

            Filesize

            6.9MB

          • memory/2712-26-0x0000000004A20000-0x0000000004A60000-memory.dmp

            Filesize

            256KB

          • memory/2712-27-0x0000000000530000-0x000000000053A000-memory.dmp

            Filesize

            40KB

          • memory/2712-17-0x0000000004A20000-0x0000000004A60000-memory.dmp

            Filesize

            256KB

          • memory/2712-15-0x000000006B7B0000-0x000000006BE9E000-memory.dmp

            Filesize

            6.9MB

          • memory/2712-14-0x0000000001000000-0x00000000010AA000-memory.dmp

            Filesize

            680KB