Analysis

  • max time kernel
    75s
  • 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
    14-09-2022 21:46

General

  • Target

    tmp.exe

  • Size

    1.0MB

  • MD5

    af4c156a3cefa7792ab99b1089eb9902

  • SHA1

    3cb1eaa52b1a87850fc0584243bea57b76b382ad

  • SHA256

    a2cb3f696e6b50bf6e6b1a53b27b5012425c86b63b5749b7819edd88e320cbee

  • SHA512

    df77c40a998b263babc1d6657258cc611a57c27954e53c99ae1c199c2a4515fca8899bb3eb8f9e0334a3d086547ca5aa553bae15f21dc7eb030316037074dbdb

  • SSDEEP

    12288:2U6h0V7uikFgOfYfbFqZ1FetI7SUqTxgVTFeVxnz5OzAf9UwPKIpF+vPllGV:960lubghfRqZnetI7bQZgK9zponGV

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

rolandlandson149.bounceme.net:1007

127.0.0.1:1007

Mutex

48099ca8-c1b4-49f3-9fe1-d8dfcbf66c09

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-06-13T20:58:05.824762936Z

  • 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

    1007

  • default_group

    sepTmAn

  • 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

    48099ca8-c1b4-49f3-9fe1-d8dfcbf66c09

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    rolandlandson149.bounceme.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 14 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:4696
    • C:\Users\Admin\AppData\Local\Temp\tmp.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
      2⤵
        PID:1008
      • C:\Users\Admin\AppData\Local\Temp\tmp.exe
        "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
        2⤵
          PID:4048
        • C:\Users\Admin\AppData\Local\Temp\tmp.exe
          "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
          2⤵
            PID:1380
          • C:\Users\Admin\AppData\Local\Temp\tmp.exe
            "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
            2⤵
              PID:4020
            • C:\Users\Admin\AppData\Local\Temp\tmp.exe
              "C:\Users\Admin\AppData\Local\Temp\tmp.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:4472
              • C:\Windows\SysWOW64\schtasks.exe
                "schtasks.exe" /create /f /tn "AGP Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2AE8.tmp"
                3⤵
                • Creates scheduled task(s)
                PID:4416
              • C:\Windows\SysWOW64\schtasks.exe
                "schtasks.exe" /create /f /tn "AGP Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp2B85.tmp"
                3⤵
                • Creates scheduled task(s)
                PID:3212

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            1KB

            MD5

            d7ba4c0d1fcdca091e14eb147769e34b

            SHA1

            d0997a36bbd5bed62b8f1452a47217f8fa0aa865

            SHA256

            fe479e8b8b6f1bd75eaf51d9fcf52a0af18b5386da63a5c44bbae066c5bc1bff

            SHA512

            b12f00cf42f1bb55669183516433e26f181be8613a6a9b4dbea6040155b591b7cb77fa74a430da39eee4087a3ea765705589c39b5bad3df5851c553b263d5c34

          • C:\Users\Admin\AppData\Local\Temp\tmp2AE8.tmp

            Filesize

            1KB

            MD5

            3f4dcafa44c36f23e4db2b2315fd09da

            SHA1

            8c83089d6f6c887a77af9b42ca09969f3b2f83f6

            SHA256

            b8475eb97200b8a15eaf07e0a2cddc5c95e5bc3e7a98685364c9796480de57dc

            SHA512

            e0624dd6cf0d5e014e96a323d2f7ebe13b683af71bd6ddafa3005cdc2f3c764cfca509262d442fc844b4b390d241ccf3eb36d30043d3d6f6e955a2ee9f792678

          • C:\Users\Admin\AppData\Local\Temp\tmp2B85.tmp

            Filesize

            1KB

            MD5

            157cd55403665c49c9fd3ca1196c4397

            SHA1

            4feed6e606b41bb617274471349582963182756b

            SHA256

            49d903f84313feb16bd189c58b6c206f98b05da00ea0da881e2ff0c893b6ba5e

            SHA512

            bea7e3caa9c37cadd772a6d3ee0d9ed47de6b3e880cd58649be2939cacd00f70d4edc1ad177e432539267bb520094d9cda3f781cdfc69122f3775242321c11b8

          • memory/1008-139-0x0000000000000000-mapping.dmp

          • memory/1380-141-0x0000000000000000-mapping.dmp

          • memory/3212-148-0x0000000000000000-mapping.dmp

          • memory/4020-142-0x0000000000000000-mapping.dmp

          • memory/4048-140-0x0000000000000000-mapping.dmp

          • memory/4416-146-0x0000000000000000-mapping.dmp

          • memory/4472-144-0x0000000000400000-0x0000000000438000-memory.dmp

            Filesize

            224KB

          • memory/4472-143-0x0000000000000000-mapping.dmp

          • memory/4696-138-0x0000000009670000-0x00000000096D6000-memory.dmp

            Filesize

            408KB

          • memory/4696-132-0x00000000002F0000-0x00000000003F8000-memory.dmp

            Filesize

            1.0MB

          • memory/4696-137-0x00000000095D0000-0x000000000966C000-memory.dmp

            Filesize

            624KB

          • memory/4696-136-0x0000000008D50000-0x000000000927C000-memory.dmp

            Filesize

            5.2MB

          • memory/4696-135-0x0000000004E60000-0x0000000004E6A000-memory.dmp

            Filesize

            40KB

          • memory/4696-134-0x0000000004DA0000-0x0000000004E32000-memory.dmp

            Filesize

            584KB

          • memory/4696-133-0x00000000054A0000-0x0000000005A44000-memory.dmp

            Filesize

            5.6MB