Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/11/2022, 10:41

General

  • Target

    P.O. DARLLY-029-11-2022,pdf.exe

  • Size

    649KB

  • MD5

    29389a03df60d9308d8ba31bf1ce00a4

  • SHA1

    2676db45c055a65c4f79c5668c92f4c45a7a557d

  • SHA256

    c0cc05dd4b5399522304d246e3cd7cdd017f36699678e62a83fb30cf44979dbb

  • SHA512

    198a27c24bcd0bafc418d52d950fc4b0b6a4e8e0b8ae1eb04c37a7af470125f6e792345bf9161f77a2ae2422a28d5c19e595538bca371fdd0f99afcb8eb69b6a

  • SSDEEP

    12288:Kj/DjpJJPJepBhiKpl8y36i7sSVfegJ4RKEdbsMor2y9BtI07kyLL1XXMQ:kFJJxQhiI3h7sqf1J4RRFsFr1XtJoyLq

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

albertsamco76.ddns.net:7480

79.134.225.71:7480

Mutex

595ac7be-87a8-4935-8bed-199af086cae8

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.134.225.71

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-15T18:29:52.126272236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    5000

  • connection_port

    7480

  • default_group

    Default

  • 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

    595ac7be-87a8-4935-8bed-199af086cae8

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    albertsamco76.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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.

  • 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
  • Creates scheduled task(s) 1 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 13 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\P.O. DARLLY-029-11-2022,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\P.O. DARLLY-029-11-2022,pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3144
    • C:\Users\Admin\AppData\Local\Temp\P.O. DARLLY-029-11-2022,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\P.O. DARLLY-029-11-2022,pdf.exe"
      2⤵
      • 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:3636
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4C7A.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3432
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DDP Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp54B8.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2260

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp4C7A.tmp

          Filesize

          1KB

          MD5

          ddba6df11ce0826c227768ada6246301

          SHA1

          460842f994327b94ba2f9ba8393c23440e785609

          SHA256

          1a5cf1a672396a05694b122b4c4be02e61b5409ab1e8af41c63182ecae0204d4

          SHA512

          9c3ac8562b9c4772692ca474c677bef70543929b346e653544d5a7bb94e093d5a60494fad3a1712ef8c7da4b488852321227583e135544696f655c19b11d3d79

        • C:\Users\Admin\AppData\Local\Temp\tmp54B8.tmp

          Filesize

          1KB

          MD5

          2271642ca970891700e3f48439739ed8

          SHA1

          cd472df2349f7db9e1e460d0ee28acd97b8a8793

          SHA256

          7aba66abbcb0b13455609174db23aed495a9adbef0e0acd28baa9c92445eda68

          SHA512

          4669a4ef8ec28cdb852ffc1401576b1bf9a9d837797d7d92bc88c18b3097404f36854e50167b309706fef400cabc43c876569ce2797ba85eb169a2783b8fe807

        • memory/3144-132-0x0000000000FF0000-0x0000000001098000-memory.dmp

          Filesize

          672KB

        • memory/3144-133-0x0000000005FD0000-0x0000000006574000-memory.dmp

          Filesize

          5.6MB

        • memory/3144-134-0x0000000005AC0000-0x0000000005B52000-memory.dmp

          Filesize

          584KB

        • memory/3144-135-0x0000000005A50000-0x0000000005A5A000-memory.dmp

          Filesize

          40KB

        • memory/3144-136-0x00000000096E0000-0x000000000977C000-memory.dmp

          Filesize

          624KB

        • memory/3636-138-0x0000000000400000-0x000000000043A000-memory.dmp

          Filesize

          232KB