Analysis

  • max time kernel
    148s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20231130-en
  • resource tags

    arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system
  • submitted
    04/12/2023, 02:51

General

  • Target

    0c9f292df5bb12a2384a0fd2d62a363c.exe

  • Size

    595KB

  • MD5

    0c9f292df5bb12a2384a0fd2d62a363c

  • SHA1

    ccc4c864a64a4a1945eef4d36a1b3ce208173880

  • SHA256

    340afda65e77e299379392aa25dd7dd040d1a87e51f2249547d083a1d85641df

  • SHA512

    9cde74dc3cf0ffd48639f977cbde0caf9b7917431409a181567842760db425b515819961f3912ea9495f8f7c45d999026da50017333e1db9f70f8b6ee2b7a873

  • SSDEEP

    12288:I45+po2sccCAQVStw6wYyBeMSIUJwS+RTbfl+RRiXp2kxtK9Wd:L+pJsbCmyp0JwSjRxkxtK9u

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

btldinc7.sytes.net:4510

127.0.0.1:4510

Mutex

8dca47d1-e2ac-4cf4-9dae-489155036caa

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2023-09-14T23:25:11.588272936Z

  • 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

    4510

  • default_group

    btld

  • 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

    8dca47d1-e2ac-4cf4-9dae-489155036caa

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    btldinc7.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.

  • 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 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.exe
    "C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.exe
      "C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.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:1816
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NTFS Host" /xml "C:\Users\Admin\AppData\Local\Temp\tmp495F.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2576
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "NTFS Host Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp4A0C.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:2600

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmp495F.tmp

          Filesize

          1KB

          MD5

          ac0ac371227223993d9e0767984c655a

          SHA1

          446780e97efe85ed278f1cbfbdca3e45ff0813ce

          SHA256

          2c3acce555332f346126d4d6cf9779477a15197369e4115ea32fe3d14227db17

          SHA512

          524ae71f2bec6cef5e18937b880af5fe3aa236bde05f4ec7b523fc148cbdc41a1c806d1cf0018332675f04f210fc3e6635a65cd3f6a093b6fb423de979be688d

        • C:\Users\Admin\AppData\Local\Temp\tmp4A0C.tmp

          Filesize

          1KB

          MD5

          9b78f668b7ff54ec3e883a980b746261

          SHA1

          0e3320353f1044a01caa71326055df39152dbc74

          SHA256

          c089e64b6418382140864bd664651f05d05b140573ac3989614c96c7049f8cf8

          SHA512

          9eb6ba944547356cae6a181057c67abd3136f53898a5fac97b4c748aba638b50798e3c40db2b03d4e7efeb1930b930d8f688170f9fad9fba9c30d06fce0fe1d5

        • memory/1816-17-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-13-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-36-0x0000000004E70000-0x0000000004EB0000-memory.dmp

          Filesize

          256KB

        • memory/1816-35-0x0000000073E90000-0x000000007457E000-memory.dmp

          Filesize

          6.9MB

        • memory/1816-34-0x0000000000620000-0x000000000062A000-memory.dmp

          Filesize

          40KB

        • memory/1816-7-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-9-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-22-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-19-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

          Filesize

          4KB

        • memory/1816-33-0x0000000000600000-0x000000000061E000-memory.dmp

          Filesize

          120KB

        • memory/1816-32-0x00000000005A0000-0x00000000005AA000-memory.dmp

          Filesize

          40KB

        • memory/1816-11-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1816-24-0x0000000004E70000-0x0000000004EB0000-memory.dmp

          Filesize

          256KB

        • memory/1816-23-0x0000000073E90000-0x000000007457E000-memory.dmp

          Filesize

          6.9MB

        • memory/2372-21-0x0000000074580000-0x0000000074C6E000-memory.dmp

          Filesize

          6.9MB

        • memory/2372-2-0x0000000002350000-0x0000000002390000-memory.dmp

          Filesize

          256KB

        • memory/2372-1-0x0000000074580000-0x0000000074C6E000-memory.dmp

          Filesize

          6.9MB

        • memory/2372-0-0x0000000000DB0000-0x0000000000E4A000-memory.dmp

          Filesize

          616KB

        • memory/2372-3-0x0000000000590000-0x00000000005A8000-memory.dmp

          Filesize

          96KB

        • memory/2372-6-0x0000000005D10000-0x0000000005D82000-memory.dmp

          Filesize

          456KB

        • memory/2372-5-0x0000000000610000-0x000000000061A000-memory.dmp

          Filesize

          40KB

        • memory/2372-4-0x0000000000600000-0x0000000000608000-memory.dmp

          Filesize

          32KB