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Analysis

  • max time kernel
    121s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    24/09/2024, 01:52

General

  • Target

    e25240231baa27e14f83428e060074197a63affbcf6f1c7990aa4a3115d4b7fd.rtf

  • Size

    830KB

  • MD5

    da0bf0c618afdcec9df34d437794e4c0

  • SHA1

    f85223bf5b04d6eceb04baeee97825b060337dd5

  • SHA256

    e25240231baa27e14f83428e060074197a63affbcf6f1c7990aa4a3115d4b7fd

  • SHA512

    d168bff7c385b5a1de789dc19ec3f54c4ea720fcb8612da3ae838b536262479147ecb7497facd507a342b9c9724edf3b29b1bc213b176b835887c85a1e369541

  • SSDEEP

    6144:VwAYwAYwAYwAYwAtFt+VG0BNs1H4wP/2OJ0+Q8XxBR:BR

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

pnauco5.ddns.net:1664

Mutex

cde38e58-d99c-4068-b775-59569bc2e8ce

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    pnauco5.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2024-07-03T06:48:27.569053036Z

  • 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

    1664

  • default_group

    NEW

  • 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

    cde38e58-d99c-4068-b775-59569bc2e8ce

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    pnauco5.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
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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
  • Drops file in System32 directory 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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Office loads VBA resources, possible macro or embedded object present
  • Launches Equation Editor 1 TTPs 1 IoCs

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

  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 13 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\e25240231baa27e14f83428e060074197a63affbcf6f1c7990aa4a3115d4b7fd.rtf"
    1⤵
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:2980
    • 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
      • System Location Discovery: System Language Discovery
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:2316
      • C:\Users\Admin\AppData\Roaming\wehdpcat93625.exe
        "C:\Users\Admin\AppData\Roaming\wehdpcat93625.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2636
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\wehdpcat93625.exe"
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • Drops file in System32 directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1392
        • C:\Users\Admin\AppData\Roaming\wehdpcat93625.exe
          "C:\Users\Admin\AppData\Roaming\wehdpcat93625.exe"
          3⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Checks whether UAC is enabled
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1716
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "SCSI Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp315D.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:2020
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "SCSI Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp31BB.tmp"
            4⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:1764

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\tmp315D.tmp

      Filesize

      1KB

      MD5

      7615ace31d4f031adbe9dcc0dbf9d79e

      SHA1

      0d98e20f1f3b5485c61a0857f1ea3b4e048b22c9

      SHA256

      f7152a3f6ecea29cccec1906dd51a163ea60812546dff5843edffdfec7ff9aaf

      SHA512

      6b86f5f08b9632a88dd1c954bf7d02207fa1fbed72807443f23e54e7b1ec0ec723ef93241b2445a40f6bcfb19e821c7e7dc33aac62d5ce1ee40a54fa4debd3b6

    • C:\Users\Admin\AppData\Local\Temp\tmp31BB.tmp

      Filesize

      1KB

      MD5

      4e71faa3a77029484cfaba423d96618f

      SHA1

      9c837d050bb43d69dc608af809c292e13bca4718

      SHA256

      c470f45efd2e7c4c5b88534a18965a78dce0f8e154d3e45a9d5569ad0e334bdb

      SHA512

      6d014de41352f2b0b494d94cd58188791e81d4e53578d0722110b6827793b735e19c614877f25c61b26233dea1b5f1998ba1240bdc8fa04c87b7e64a4ca15fe0

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

      Filesize

      19KB

      MD5

      621cc0523a08053341594773e39ec01a

      SHA1

      a618204d39fdf8161c808daafa64e55eb23474dc

      SHA256

      b1b1db50e8dd8421d32e4965ccde3c7a62942f255c2f3c554030fbcf83820bd0

      SHA512

      d0c25972e0ba1b5865fbd4242346b8929b4cf4d14e2509a999b2646b3c0bfb915c31a96bb6daccba7242b3a900b971c9a2c82f73cd8c37d9911b96e523dd88ee

    • \Users\Admin\AppData\Roaming\wehdpcat93625.exe

      Filesize

      629KB

      MD5

      280baa14b25c23e63122a4028928dff0

      SHA1

      8070c5e450768312a50c64be6edc386b009bea77

      SHA256

      4a842606d80e5bc30a9817fc11877889b24e3daccc2ba7ea0711d5c259e70226

      SHA512

      26b96a7b246c3abaa02a989ea1e90a9ede181133f8a1e1b9605b3812f1505527d4164e14c169c73773e5872881bfa512793cffb381110c4a3b4f160e307f0f6f

    • memory/1648-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1648-2-0x000000007159D000-0x00000000715A8000-memory.dmp

      Filesize

      44KB

    • memory/1648-86-0x000000007159D000-0x00000000715A8000-memory.dmp

      Filesize

      44KB

    • memory/1648-85-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/1648-17-0x000000007159D000-0x00000000715A8000-memory.dmp

      Filesize

      44KB

    • memory/1648-0-0x000000002FE91000-0x000000002FE92000-memory.dmp

      Filesize

      4KB

    • memory/1716-56-0x0000000002030000-0x000000000203C000-memory.dmp

      Filesize

      48KB

    • memory/1716-52-0x00000000009D0000-0x00000000009E2000-memory.dmp

      Filesize

      72KB

    • memory/1716-37-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

      Filesize

      4KB

    • memory/1716-30-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-28-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-24-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-35-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-26-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-63-0x0000000002120000-0x0000000002134000-memory.dmp

      Filesize

      80KB

    • memory/1716-47-0x0000000000470000-0x000000000047A000-memory.dmp

      Filesize

      40KB

    • memory/1716-48-0x0000000000570000-0x000000000058E000-memory.dmp

      Filesize

      120KB

    • memory/1716-49-0x0000000000480000-0x000000000048A000-memory.dmp

      Filesize

      40KB

    • memory/1716-33-0x0000000000400000-0x0000000000438000-memory.dmp

      Filesize

      224KB

    • memory/1716-53-0x00000000009E0000-0x00000000009FA000-memory.dmp

      Filesize

      104KB

    • memory/1716-54-0x0000000000A90000-0x0000000000A9E000-memory.dmp

      Filesize

      56KB

    • memory/1716-55-0x0000000001FE0000-0x0000000001FF2000-memory.dmp

      Filesize

      72KB

    • memory/1716-62-0x0000000002170000-0x000000000219E000-memory.dmp

      Filesize

      184KB

    • memory/1716-57-0x0000000002040000-0x000000000204E000-memory.dmp

      Filesize

      56KB

    • memory/1716-58-0x0000000002050000-0x0000000002064000-memory.dmp

      Filesize

      80KB

    • memory/1716-59-0x0000000002060000-0x0000000002070000-memory.dmp

      Filesize

      64KB

    • memory/1716-60-0x00000000020F0000-0x0000000002104000-memory.dmp

      Filesize

      80KB

    • memory/1716-61-0x0000000002100000-0x000000000210E000-memory.dmp

      Filesize

      56KB

    • memory/2636-22-0x000000006B71E000-0x000000006B71F000-memory.dmp

      Filesize

      4KB

    • memory/2636-23-0x0000000005040000-0x00000000050BA000-memory.dmp

      Filesize

      488KB

    • memory/2636-16-0x0000000000530000-0x0000000000542000-memory.dmp

      Filesize

      72KB

    • memory/2636-15-0x0000000000B30000-0x0000000000BD4000-memory.dmp

      Filesize

      656KB

    • memory/2636-13-0x000000006B71E000-0x000000006B71F000-memory.dmp

      Filesize

      4KB