Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    16-05-2024 07:01

General

  • Target

    NaxorCrypter.exe

  • Size

    2.2MB

  • MD5

    b29c154b97950a07caf5aa3e3795a4a1

  • SHA1

    8940008c6630ad14a42f76c72b63341adb406736

  • SHA256

    51a39194cd5c21c1de6e9724f9b5890a2b50f9d7e3b7fa003a5e50beb9559fb4

  • SHA512

    c21b40a6e412f0022da398212ddcf6cfdf51522715297d0275fb2983d936a1ace29f4f8a54f751617fc92121b825424389bdd096b9c59c4cff6a58a57bde7bc3

  • SSDEEP

    24576:NkGGdafLtcWAjB9XvdBqLP2XDBxkdgGAQjdhnF61A5w/8yYBBifgqH3P64F7:G4ovIbqxCTx5w/Xf5f

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

1337day.ddns.net:1900

Mutex

93979016-0516-4417-b883-a0edc923fe85

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    1337day.ddns.net

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2018-07-29T17:12:59.761069736Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1900

  • 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

    93979016-0516-4417-b883-a0edc923fe85

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • set_critical_process

    true

  • timeout_interval

    5000

  • use_custom_dns_server

    false

  • version

    1.2.2.0

  • wan_timeout

    8000

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

fal92.duckdns.org:10142

Mutex

3d25feee885880d8ab876c66d8b91d84

Attributes
  • reg_key

    3d25feee885880d8ab876c66d8b91d84

  • splitter

    |'|'|

Signatures

  • NanoCore

    NanoCore is a remote access tool (RAT) with a variety of capabilities.

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Modifies Windows Firewall 2 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 11 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe
    "C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2880
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Crypter\Crypter" /XML "C:\Users\Admin\AppData\Roaming\Crypter\aooooo.xml"
      2⤵
      • Creates scheduled task(s)
      PID:2948
    • C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe
      "C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe"
      2⤵
        PID:3032
      • C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe
        "C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe"
        2⤵
          PID:1720
        • C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe
          "C:\Users\Admin\AppData\Local\Temp\NaxorCrypter.exe"
          2⤵
          • Checks whether UAC is enabled
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of AdjustPrivilegeToken
          PID:2140
        • C:\Users\Admin\AppData\Local\Temp\Naxor.exe
          "C:\Users\Admin\AppData\Local\Temp\Naxor.exe"
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:2628
          • C:\Users\Admin\AppData\Local\Temp\Cooporation Nvidia.exe
            "C:\Users\Admin\AppData\Local\Temp\Cooporation Nvidia.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2728
            • C:\Users\Admin\AppData\Local\Temp\Cooporation Nvidia.exe
              "C:\Users\Admin\AppData\Local\Temp\Cooporation Nvidia.exe"
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:2936
              • C:\Users\Admin\AppData\Roaming\Cooporation Nvidia.exe
                "C:\Users\Admin\AppData\Roaming\Cooporation Nvidia.exe"
                5⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1088
                • C:\Users\Admin\AppData\Roaming\Cooporation Nvidia.exe
                  "C:\Users\Admin\AppData\Roaming\Cooporation Nvidia.exe"
                  6⤵
                  • Drops startup file
                  • Executes dropped EXE
                  • Adds Run key to start application
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:1736
                  • C:\Windows\SysWOW64\netsh.exe
                    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Cooporation Nvidia.exe" "Cooporation Nvidia.exe" ENABLE
                    7⤵
                    • Modifies Windows Firewall
                    PID:2688
          • C:\Users\Admin\AppData\Local\Temp\Naxor Crypter.exe
            "C:\Users\Admin\AppData\Local\Temp\Naxor Crypter.exe"
            3⤵
            • Executes dropped EXE
            PID:2540

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Execution

      Scheduled Task/Job

      1
      T1053

      Persistence

      Create or Modify System Process

      1
      T1543

      Windows Service

      1
      T1543.003

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Scheduled Task/Job

      1
      T1053

      Privilege Escalation

      Create or Modify System Process

      1
      T1543

      Windows Service

      1
      T1543.003

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Scheduled Task/Job

      1
      T1053

      Defense Evasion

      Impair Defenses

      1
      T1562

      Disable or Modify System Firewall

      1
      T1562.004

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Cooporation Nvidia.exe
        Filesize

        286KB

        MD5

        2bb4aaf47de772b665bdab87fa48ee60

        SHA1

        ccddbd80107f4b854826c92d7e8088d6c3736684

        SHA256

        a939480354a35391d3b4c970ef4cfa48acbdcabb3c7992b21f947ac9029b9500

        SHA512

        4e75c2d36e753dd7bc192b2d4575a45a336179659573733dea6c484051c6efda25f4bb7412190c201e3f0f06a785409d130932df588dd69f199da8e9ae81daf2

      • C:\Users\Admin\AppData\Local\Temp\svhost.exe
        Filesize

        85KB

        MD5

        2e5f1cf69f92392f8829fc9c9263ae9b

        SHA1

        97b9ca766bbbdaa8c9ec960dc41b598f7fad82a5

        SHA256

        51985a57e085d8b17042f0cdc1f905380b792854733eb3275fd8fce4e3bb886b

        SHA512

        f7e096dd9d0fa3a3c04c01bf229c4b344798a4c8b7b848588c1d78cb9fadfa9b1d0fd53c1fe74d191d5561e9eb551a4a3fc918363f119ea60024dd3d67c83883

      • C:\Users\Admin\AppData\Roaming\Crypter\aooooo.xml
        Filesize

        1KB

        MD5

        e2306bb05524698f22f8bf81958388f6

        SHA1

        607012e8986d5e0f7c9281498e424fae725e83d2

        SHA256

        51a089fcf171b96a3966d0ff1b1caa6e18a344be90bc343e53499e0d932ea4ce

        SHA512

        b4ddb014c175e7c5c9d4fb64df646f1cbc344e24dac793b10aa98ab077df22fc78bea23476aee66e2a56e552965b44a51c5933d0d9bc175026478af3eae662bf

      • \Users\Admin\AppData\Local\Temp\Naxor Crypter.exe
        Filesize

        1.9MB

        MD5

        eb62d522aa83250770fb5dfbe3136bda

        SHA1

        8e1b0a19575ef93cbe4f98b6ed252cf7a450ccdc

        SHA256

        f2936d5c363aca1604c2daacbfd086572c5956a0796a92f0d8f92001b9d0b971

        SHA512

        1b24cb54b5c3f907356e402afedee3603e81ceb5858bd3fcb52c349c42afbf6a426e9236d2c871b4191c21a4e799c5af0db0773822dfa6a3be128d776ec78be5

      • \Users\Admin\AppData\Local\Temp\Naxor.exe
        Filesize

        1.1MB

        MD5

        33dbbf2d55dc60f7c88638c145d0f716

        SHA1

        36bc559e602d931a6255c4286b7eeb7baf01bf11

        SHA256

        9333f355306caaf9d0b292c7268e3d3475b297533437a4fa7568b7743be30db6

        SHA512

        09d88f26867fb8dd1d11e5eecd16d5f952c9c8786ccd6a637ac65da0e2ed127d5ed819110ce344b38cdeec4b2219ead868ea75d3b6a9a6cb8fa53862ec7a7157

      • memory/1736-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/2140-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/2140-21-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-25-0x0000000074C60000-0x000000007520B000-memory.dmp
        Filesize

        5.7MB

      • memory/2140-16-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-13-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-11-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-6-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-23-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-8-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/2140-104-0x0000000074C60000-0x000000007520B000-memory.dmp
        Filesize

        5.7MB

      • memory/2540-102-0x0000000000900000-0x0000000000AF6000-memory.dmp
        Filesize

        2.0MB

      • memory/2880-31-0x0000000074C60000-0x000000007520B000-memory.dmp
        Filesize

        5.7MB

      • memory/2880-0-0x0000000074C61000-0x0000000074C62000-memory.dmp
        Filesize

        4KB

      • memory/2880-2-0x0000000074C60000-0x000000007520B000-memory.dmp
        Filesize

        5.7MB

      • memory/2880-1-0x0000000074C60000-0x000000007520B000-memory.dmp
        Filesize

        5.7MB

      • memory/2936-79-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-77-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-76-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
        Filesize

        4KB

      • memory/2936-74-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-72-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-70-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-68-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB

      • memory/2936-80-0x0000000000400000-0x000000000040E000-memory.dmp
        Filesize

        56KB