Analysis

  • max time kernel
    77s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    15/11/2022, 23:54

General

  • Target

    DOCKING SURVEY CHECKLIST.exe

  • Size

    379KB

  • MD5

    2daa48f1b8e1b5ab35c8085b82dc702f

  • SHA1

    c1d808028449413e1868f376a08f3929858bd058

  • SHA256

    2777c2ab1358ff442a0744634600581a71c0ea57b983437aaf1b2b184e249c3e

  • SHA512

    49fe6a5cb4d5e043c6d7ab90a167692b4ba21f6114c3005259f9d087d3cd027d363784b3c30bc835fa62d36bc3271e2d67159bec5ad474742df6b75a1b2a9e2c

  • SSDEEP

    6144:/pup3megfKaXWG+RPkflMJgXOnRjiBL2q/OMbpKt2GCVdKrLtWR73TeS6B+q:/pVegfHIgOuOn0L2IOMb+2GCi/tU3TeX

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

brewsterchristophe.ddns.net:5899

194,147,5,75:5899

Mutex

b8aebc29-8c64-444f-99e6-dc4122e9bbfc

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    194,147,5,75

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-04-29T03:26:40.572298236Z

  • 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

    5899

  • 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

    b8aebc29-8c64-444f-99e6-dc4122e9bbfc

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    brewsterchristophe.ddns.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.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 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 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DOCKING SURVEY CHECKLIST.exe
    "C:\Users\Admin\AppData\Local\Temp\DOCKING SURVEY CHECKLIST.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1376
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell" Copy-Item 'C:\Users\Admin\AppData\Local\Temp\DOCKING SURVEY CHECKLIST.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Syxbdhdstem.exe'
      2⤵
      • Drops startup file
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1608
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1640
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpBEAE.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1816
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "UDP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpC0A3.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1476

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          1KB

          MD5

          8cad1b41587ced0f1e74396794f31d58

          SHA1

          11054bf74fcf5e8e412768035e4dae43aa7b710f

          SHA256

          3086d914f6b23268f8a12cb1a05516cd5465c2577e1d1e449f1b45c8e5e8f83c

          SHA512

          99c2ef89029de51a866df932841684b7fc912df21e10e2dd0d09e400203bbdc6cba6319a31780b7bf8b286d2cea8ea3fc7d084348bf2f002ab4f5a34218ccbef

        • C:\Users\Admin\AppData\Local\Temp\tmpC0A3.tmp

          Filesize

          1KB

          MD5

          0a24db62cb5b84309c4803346caaa25d

          SHA1

          67660778f61bb44168c33ed3fe56ed86cf9583e8

          SHA256

          38d38647af394a04ee6add9f05c43244f04e64a6b96257f4b241a5038efa82df

          SHA512

          d25d9df063f44595d5e0bf890755bd387655131ff369eeedf3d11ffcc6202ca4455bbb33a8a926dd06839cbd1ddec3d06809b3c66a82c6518aa14beaa469a548

        • memory/1376-55-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

          Filesize

          8KB

        • memory/1376-58-0x0000000000450000-0x000000000046C000-memory.dmp

          Filesize

          112KB

        • memory/1376-54-0x0000000001180000-0x00000000011E2000-memory.dmp

          Filesize

          392KB

        • memory/1608-72-0x00000000714F0000-0x0000000071A9B000-memory.dmp

          Filesize

          5.7MB

        • memory/1608-93-0x00000000714F0000-0x0000000071A9B000-memory.dmp

          Filesize

          5.7MB

        • memory/1640-65-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-82-0x0000000000C60000-0x0000000000C7A000-memory.dmp

          Filesize

          104KB

        • memory/1640-68-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-59-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-63-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-62-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-60-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-77-0x00000000003A0000-0x00000000003AA000-memory.dmp

          Filesize

          40KB

        • memory/1640-78-0x00000000003C0000-0x00000000003DE000-memory.dmp

          Filesize

          120KB

        • memory/1640-79-0x00000000003B0000-0x00000000003BA000-memory.dmp

          Filesize

          40KB

        • memory/1640-80-0x0000000002155000-0x0000000002166000-memory.dmp

          Filesize

          68KB

        • memory/1640-81-0x0000000000930000-0x0000000000942000-memory.dmp

          Filesize

          72KB

        • memory/1640-70-0x0000000000400000-0x0000000000438000-memory.dmp

          Filesize

          224KB

        • memory/1640-83-0x0000000000A90000-0x0000000000A9E000-memory.dmp

          Filesize

          56KB

        • memory/1640-84-0x0000000002120000-0x0000000002132000-memory.dmp

          Filesize

          72KB

        • memory/1640-85-0x0000000002130000-0x000000000213E000-memory.dmp

          Filesize

          56KB

        • memory/1640-86-0x0000000002140000-0x000000000214C000-memory.dmp

          Filesize

          48KB

        • memory/1640-87-0x0000000002190000-0x00000000021A4000-memory.dmp

          Filesize

          80KB

        • memory/1640-88-0x00000000021A0000-0x00000000021B0000-memory.dmp

          Filesize

          64KB

        • memory/1640-89-0x00000000022B0000-0x00000000022C4000-memory.dmp

          Filesize

          80KB

        • memory/1640-90-0x0000000004300000-0x000000000430E000-memory.dmp

          Filesize

          56KB

        • memory/1640-91-0x0000000004760000-0x000000000478E000-memory.dmp

          Filesize

          184KB

        • memory/1640-92-0x0000000004320000-0x0000000004334000-memory.dmp

          Filesize

          80KB