Analysis

  • max time kernel
    94s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-08-2022 14:00

General

  • Target

    33033d3ad58d7ea7014df1ed01f3a87d.exe

  • Size

    1007KB

  • MD5

    33033d3ad58d7ea7014df1ed01f3a87d

  • SHA1

    b5d523117a452b857706ce9829aaddbb3b041863

  • SHA256

    b95f5f68948d08e06292fbda648e99b3d7d237e19cb4da03fc729fddd681d195

  • SHA512

    54ceda6e975ebddf704bc93600cb10e3f05358857908b8fa1eb742efddd2a206683782c87462c80f14210c0c4402de6321a117b2356bfdfd662f3aef1567e450

  • SSDEEP

    24576:4sI90AUjkXY+mzo3FLevRJSHl+4NG8okyNR:xSlmzJvRs+qG3kyn

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

kasawulli845.ddns.net:5211

127.0.0.1:5211

Mutex

d4cfd040-7e1e-457d-bd2d-3dc785b0760c

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-05-29T06:31:10.522487936Z

  • 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

    5211

  • default_group

    AUGFILE

  • 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

    d4cfd040-7e1e-457d-bd2d-3dc785b0760c

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    kasawulli845.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.

  • 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 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\33033d3ad58d7ea7014df1ed01f3a87d.exe
    "C:\Users\Admin\AppData\Local\Temp\33033d3ad58d7ea7014df1ed01f3a87d.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\33033d3ad58d7ea7014df1ed01f3a87d.exe
      "C:\Users\Admin\AppData\Local\Temp\33033d3ad58d7ea7014df1ed01f3a87d.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:2016
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "TCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD1F0.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:900
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "TCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpD377.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1688

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpD1F0.tmp

    Filesize

    1KB

    MD5

    821793d40de0973690ab1a011467bfd4

    SHA1

    d76ebeadd3688c6edc48bf07c3a34a961b57ae92

    SHA256

    d5685a775bab834f449da1d0ab79e51c1d084a593ce23eeb082bf9e1ebb0adff

    SHA512

    108b991e027ec6799e18fcdf34961ac121e024d62ab96973e9b5465801951cac25a3706e0de811e391992ef4ea6505705fb71412954c3789c82c194842fac54f

  • C:\Users\Admin\AppData\Local\Temp\tmpD377.tmp

    Filesize

    1KB

    MD5

    9db6095f31f8b4ae8173fe11424a8dfe

    SHA1

    4b0655ae95def24a41710ca137649d93bfa49407

    SHA256

    9911b4513e44521c90c020ddcddea1ddc58095055a72ec638b593bf9ee23aa72

    SHA512

    5bee977264545a30a2d53e674f54a4066d4529dc9162d46911b9cac957052cdc1ea7c8d60f9c57d3f33db6cb964b1e6bb2347d0e0e2af0a32ac98938c02ffc1c

  • memory/900-73-0x0000000000000000-mapping.dmp

  • memory/1688-75-0x0000000000000000-mapping.dmp

  • memory/1780-55-0x00000000768F1000-0x00000000768F3000-memory.dmp

    Filesize

    8KB

  • memory/1780-56-0x0000000000560000-0x0000000000578000-memory.dmp

    Filesize

    96KB

  • memory/1780-57-0x0000000000320000-0x000000000032C000-memory.dmp

    Filesize

    48KB

  • memory/1780-58-0x0000000005890000-0x0000000005918000-memory.dmp

    Filesize

    544KB

  • memory/1780-59-0x0000000000C70000-0x0000000000CAA000-memory.dmp

    Filesize

    232KB

  • memory/1780-54-0x0000000000CB0000-0x0000000000DB2000-memory.dmp

    Filesize

    1.0MB

  • memory/2016-63-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-80-0x0000000000680000-0x0000000000692000-memory.dmp

    Filesize

    72KB

  • memory/2016-69-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-71-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-66-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-64-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-61-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-60-0x0000000000400000-0x0000000000438000-memory.dmp

    Filesize

    224KB

  • memory/2016-77-0x00000000004E0000-0x00000000004EA000-memory.dmp

    Filesize

    40KB

  • memory/2016-78-0x0000000000660000-0x000000000067E000-memory.dmp

    Filesize

    120KB

  • memory/2016-79-0x00000000004F0000-0x00000000004FA000-memory.dmp

    Filesize

    40KB

  • memory/2016-67-0x000000000041E792-mapping.dmp

  • memory/2016-81-0x0000000000690000-0x00000000006AA000-memory.dmp

    Filesize

    104KB

  • memory/2016-82-0x0000000000740000-0x000000000074E000-memory.dmp

    Filesize

    56KB

  • memory/2016-83-0x0000000000750000-0x0000000000762000-memory.dmp

    Filesize

    72KB

  • memory/2016-84-0x0000000000B80000-0x0000000000B8E000-memory.dmp

    Filesize

    56KB

  • memory/2016-85-0x0000000000C90000-0x0000000000C9C000-memory.dmp

    Filesize

    48KB

  • memory/2016-86-0x0000000000CA0000-0x0000000000CB4000-memory.dmp

    Filesize

    80KB

  • memory/2016-87-0x0000000004200000-0x0000000004210000-memory.dmp

    Filesize

    64KB

  • memory/2016-88-0x0000000004210000-0x0000000004224000-memory.dmp

    Filesize

    80KB

  • memory/2016-89-0x0000000004220000-0x000000000422E000-memory.dmp

    Filesize

    56KB

  • memory/2016-90-0x0000000004320000-0x000000000434E000-memory.dmp

    Filesize

    184KB

  • memory/2016-91-0x0000000004280000-0x0000000004294000-memory.dmp

    Filesize

    80KB