Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-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 5 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 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 behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1668
    • C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.exe
      "C:\Users\Admin\AppData\Local\Temp\0c9f292df5bb12a2384a0fd2d62a363c.exe"
      2⤵
        PID:5116
      • 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:3032
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "ISS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp851E.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:724
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /create /f /tn "ISS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp85AC.tmp"
          3⤵
          • Creates scheduled task(s)
          PID:5100

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\0c9f292df5bb12a2384a0fd2d62a363c.exe.log

            Filesize

            2KB

            MD5

            93d52c1bc7c38d958583ebbd3dc09cd4

            SHA1

            4c5ee6f9c9ae190c9a0cccb91fa2257ddcb8b0d5

            SHA256

            2905f3a06dd8907ddbcbe64389cffcc8a5273d1822e25f8bea385bdd01653c76

            SHA512

            dfc55c3247d7734c5a531fb5a3de689e8bb823e82c14ad6cab16923d50d51e03e5e86165a7d65b3059a66b67968b611368b010a6d9f755916b01ef7b67c5228e

          • C:\Users\Admin\AppData\Local\Temp\tmp851E.tmp

            Filesize

            1KB

            MD5

            ac0ac371227223993d9e0767984c655a

            SHA1

            446780e97efe85ed278f1cbfbdca3e45ff0813ce

            SHA256

            2c3acce555332f346126d4d6cf9779477a15197369e4115ea32fe3d14227db17

            SHA512

            524ae71f2bec6cef5e18937b880af5fe3aa236bde05f4ec7b523fc148cbdc41a1c806d1cf0018332675f04f210fc3e6635a65cd3f6a093b6fb423de979be688d

          • C:\Users\Admin\AppData\Local\Temp\tmp85AC.tmp

            Filesize

            1KB

            MD5

            97ca1345e92062cecc79ad320a0e89b1

            SHA1

            9e696a4df86c685befe01d00a16611331ed7e763

            SHA256

            937a440251a10c5a8921104975e5b7f166a34be5e48aa5c4ad344f8beadd1ad2

            SHA512

            b7cce6586e4db4e387343c01977b0768fca8c4842098f1caf7e4240fa89273279b1ade5ed25aaf108102dd06c0ee945a24cf4786eb24de34520b4c11c2e82214

          • memory/1668-10-0x0000000005F50000-0x0000000005FEC000-memory.dmp

            Filesize

            624KB

          • memory/1668-3-0x0000000005200000-0x00000000057A4000-memory.dmp

            Filesize

            5.6MB

          • memory/1668-5-0x0000000004E60000-0x0000000004E6A000-memory.dmp

            Filesize

            40KB

          • memory/1668-6-0x0000000004E70000-0x0000000004E88000-memory.dmp

            Filesize

            96KB

          • memory/1668-7-0x0000000004EB0000-0x0000000004EB8000-memory.dmp

            Filesize

            32KB

          • memory/1668-8-0x0000000004EC0000-0x0000000004ECA000-memory.dmp

            Filesize

            40KB

          • memory/1668-9-0x0000000006140000-0x00000000061B2000-memory.dmp

            Filesize

            456KB

          • memory/1668-0-0x0000000000120000-0x00000000001BA000-memory.dmp

            Filesize

            616KB

          • memory/1668-1-0x0000000074650000-0x0000000074E00000-memory.dmp

            Filesize

            7.7MB

          • memory/1668-4-0x0000000004D60000-0x0000000004DF2000-memory.dmp

            Filesize

            584KB

          • memory/1668-15-0x0000000074650000-0x0000000074E00000-memory.dmp

            Filesize

            7.7MB

          • memory/1668-2-0x0000000004AA0000-0x0000000004AB0000-memory.dmp

            Filesize

            64KB

          • memory/3032-16-0x00000000052E0000-0x00000000052F0000-memory.dmp

            Filesize

            64KB

          • memory/3032-14-0x0000000074650000-0x0000000074E00000-memory.dmp

            Filesize

            7.7MB

          • memory/3032-11-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/3032-24-0x0000000006190000-0x000000000619A000-memory.dmp

            Filesize

            40KB

          • memory/3032-25-0x0000000006220000-0x000000000623E000-memory.dmp

            Filesize

            120KB

          • memory/3032-26-0x0000000006360000-0x000000000636A000-memory.dmp

            Filesize

            40KB

          • memory/3032-27-0x0000000074650000-0x0000000074E00000-memory.dmp

            Filesize

            7.7MB

          • memory/3032-28-0x00000000052E0000-0x00000000052F0000-memory.dmp

            Filesize

            64KB