Analysis

  • max time kernel
    95s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06-09-2022 15:52

General

  • Target

    BL No.KTOHRYGN2202 (SURRENDERED BL).exe

  • Size

    674KB

  • MD5

    69b22379d46d4c2a2dc362e4007bea3d

  • SHA1

    d37900a359f9b48802aea91405e3d5294e9a872f

  • SHA256

    fe910e56eb88b734e4464a006324b15804237b40c2f7ad843bd9f419c65d5df9

  • SHA512

    7db2405fd5ac092939cf1ecbd4782a854d702e26757e22ce1095d7fbee349cb01726d927b852ce84b373337dedac32c5b9d35a9f64d19ffc719de9847c98ed83

  • SSDEEP

    12288:27oCLq8V6og3rMfxPjnMp1cdap17rGPZVnoles0EeVljP5ruP5z0aIXWX6H:27DLq8Vk0ZMpyczr0ZSAEENuP5ogO

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

godisgood1.hopto.org:7712

185.225.73.164:7712

Mutex

bcd7727e-ef56-4958-8ed9-949f5c5ea8f6

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    185.225.73.164

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-05-24T09:37:49.129028236Z

  • 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

    7712

  • 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

    bcd7727e-ef56-4958-8ed9-949f5c5ea8f6

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    godisgood1.hopto.org

  • 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
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe
    "C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qLCTUoBHeGs.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1716
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qLCTUoBHeGs" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC0B1.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:896
    • C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe
      "C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe"
      2⤵
        PID:1212
      • C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe
        "C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe"
        2⤵
          PID:568
        • C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).exe
          "C:\Users\Admin\AppData\Local\Temp\BL No.KTOHRYGN2202 (SURRENDERED BL).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:1876
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "NTFS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC514.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:852
          • C:\Windows\SysWOW64\schtasks.exe
            "schtasks.exe" /create /f /tn "NTFS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC60F.tmp"
            3⤵
            • Creates scheduled task(s)
            PID:624

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Execution

      Scheduled Task

      1
      T1053

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Scheduled Task

      1
      T1053

      Privilege Escalation

      Scheduled Task

      1
      T1053

      Defense Evasion

      Modify Registry

      1
      T1112

      Discovery

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmpC0B1.tmp
        Filesize

        1KB

        MD5

        29e7f7c67dd13f5c66938923b14da644

        SHA1

        64fc190a013f73d6dc94294b16ff4eda77052869

        SHA256

        6d1bb5057fae112da1f689229dacafb4c25e6e1d09f8c2b058cc5e00fe575856

        SHA512

        a98ba0b2d8a255f64a59d1fd3a8b96c2db29dcaa9d5ca22ffd2f52588e42364bb413244332501b949ff77688749774ea0c06ce0d0b52797ee905a6e8911294f1

      • C:\Users\Admin\AppData\Local\Temp\tmpC514.tmp
        Filesize

        1KB

        MD5

        fb9a885116c4a98b541ce16a95960dc5

        SHA1

        ccfc56e6fa5950c958d95f0323e4e484d72b013a

        SHA256

        bf14c137b166e3a53be44a9a046294bc1c07e885e01bbb26d1744ad38680ebde

        SHA512

        fa7c6720571aad9979b0a69cc41cc805ea52a65f37c10ba756bafe5a37961973d90c55a3d1a39f179637f5ebca5467950d9b7befd53cdcb81416a8e64ef56f78

      • C:\Users\Admin\AppData\Local\Temp\tmpC60F.tmp
        Filesize

        1KB

        MD5

        981e126601526eaa5b0ad45c496c4465

        SHA1

        d610d6a21a8420cc73fcd3e54ddae75a5897b28b

        SHA256

        11ae277dfa39e7038b782ca6557339e7fe88533fe83705c356a1500a1402d527

        SHA512

        a59fb704d931ccb7e1ec1a7b98e24ccd8708be529066c6de4b673098cdebef539f7f50d9e051c43954b5a8e7f810862b3a4ede170f131e080dadc3e763ed4bdb

      • memory/624-79-0x0000000000000000-mapping.dmp
      • memory/852-77-0x0000000000000000-mapping.dmp
      • memory/896-60-0x0000000000000000-mapping.dmp
      • memory/1716-97-0x000000006F3B0000-0x000000006F95B000-memory.dmp
        Filesize

        5.7MB

      • memory/1716-81-0x000000006F3B0000-0x000000006F95B000-memory.dmp
        Filesize

        5.7MB

      • memory/1716-59-0x0000000000000000-mapping.dmp
      • memory/1876-65-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-91-0x0000000000910000-0x0000000000924000-memory.dmp
        Filesize

        80KB

      • memory/1876-67-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-68-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-70-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-73-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-71-0x000000000041E792-mapping.dmp
      • memory/1876-75-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1876-96-0x0000000000A60000-0x0000000000A74000-memory.dmp
        Filesize

        80KB

      • memory/1876-95-0x0000000004840000-0x000000000486E000-memory.dmp
        Filesize

        184KB

      • memory/1876-94-0x0000000000950000-0x000000000095E000-memory.dmp
        Filesize

        56KB

      • memory/1876-93-0x0000000000930000-0x0000000000944000-memory.dmp
        Filesize

        80KB

      • memory/1876-92-0x0000000000920000-0x0000000000930000-memory.dmp
        Filesize

        64KB

      • memory/1876-82-0x00000000003F0000-0x00000000003FA000-memory.dmp
        Filesize

        40KB

      • memory/1876-83-0x0000000000680000-0x000000000069E000-memory.dmp
        Filesize

        120KB

      • memory/1876-84-0x0000000000440000-0x000000000044A000-memory.dmp
        Filesize

        40KB

      • memory/1876-85-0x00000000006B0000-0x00000000006C2000-memory.dmp
        Filesize

        72KB

      • memory/1876-86-0x00000000006E0000-0x00000000006FA000-memory.dmp
        Filesize

        104KB

      • memory/1876-87-0x0000000000800000-0x000000000080E000-memory.dmp
        Filesize

        56KB

      • memory/1876-88-0x0000000000860000-0x0000000000872000-memory.dmp
        Filesize

        72KB

      • memory/1876-89-0x00000000008B0000-0x00000000008BC000-memory.dmp
        Filesize

        48KB

      • memory/1876-90-0x0000000000900000-0x000000000090E000-memory.dmp
        Filesize

        56KB

      • memory/1876-64-0x0000000000400000-0x0000000000438000-memory.dmp
        Filesize

        224KB

      • memory/1972-56-0x0000000000510000-0x0000000000528000-memory.dmp
        Filesize

        96KB

      • memory/1972-57-0x0000000000570000-0x000000000057C000-memory.dmp
        Filesize

        48KB

      • memory/1972-58-0x0000000005DB0000-0x0000000005E38000-memory.dmp
        Filesize

        544KB

      • memory/1972-63-0x0000000004DD0000-0x0000000004E0A000-memory.dmp
        Filesize

        232KB

      • memory/1972-54-0x0000000000220000-0x00000000002CE000-memory.dmp
        Filesize

        696KB

      • memory/1972-55-0x0000000075CF1000-0x0000000075CF3000-memory.dmp
        Filesize

        8KB