Analysis

  • max time kernel
    144s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-10-2022 18:30

General

  • Target

    DHL_014376 makbuz belgesi,pdf.exe

  • Size

    1.2MB

  • MD5

    f2eb0099fbd4e56313ee832801de298e

  • SHA1

    daa7daf7fcde07af9eaf69470adbd242a3a55bf8

  • SHA256

    522c5a9be86231dd7334cdf51ba06fe5221632491c99554fab559d36e0b76ab3

  • SHA512

    c52783f88c73b83ec5de59e83b2c1478a1447001a33ffa2d58806a850769c5f56df49a97eb89de13c02e569561f57be9374c2a9fb88fc7a3d81c3cdb3bbdb2da

  • SSDEEP

    24576:DfpVCjUByvd4GO/6jYug2ScatsxpOusjUmAqjL:DvCjU24GOCjpgdRsEl

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

albertsamco76.ddns.net:7480

79.134.225.71:7480

Mutex

595ac7be-87a8-4935-8bed-199af086cae8

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    79.134.225.71

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2022-07-15T18:29:52.126272236Z

  • bypass_user_account_control

    false

  • bypass_user_account_control_data

    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

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    5000

  • connection_port

    7480

  • 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

    595ac7be-87a8-4935-8bed-199af086cae8

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    albertsamco76.ddns.net

  • primary_dns_server

    8.8.8.8

  • request_elevation

    false

  • 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 13 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 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL_014376 makbuz belgesi,pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL_014376 makbuz belgesi,pdf.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:3012
    • C:\Users\Admin\AppData\Local\Temp\DHL_014376 makbuz belgesi,pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL_014376 makbuz belgesi,pdf.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:1400
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCD62.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:3120
      • C:\Windows\SysWOW64\schtasks.exe
        "schtasks.exe" /create /f /tn "DHCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpCDE0.tmp"
        3⤵
        • Creates scheduled task(s)
        PID:1996

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpCD62.tmp

    Filesize

    1KB

    MD5

    3d8eb1c2fbe00c8e1651c7e6c2ddf134

    SHA1

    b8b69c71c4fa86900bd28f19fea05e2a4697f81c

    SHA256

    6e2cb2588702bba7574915ad0914dd55c77eb4d01f7bf07fa7dbb51e948c79ff

    SHA512

    a1b9b5feebc8780e902ea13c3c81af52da8c55bb8b8908d8fb35033cf25b86d563c48470b900222cd486dd7218328a7d711de91fc89d1670292ae62d357355f0

  • C:\Users\Admin\AppData\Local\Temp\tmpCDE0.tmp

    Filesize

    1KB

    MD5

    2f26d92c1eeead3896820e56ec46f6f1

    SHA1

    d95533b61eed7d89e4ada56bc566d60e42ac1f61

    SHA256

    99a158463ce40c750bad6991ae1fceece305a0dbf8e209dd7147b5d539756bfa

    SHA512

    6c1ed12d5e1afcd9e7f327e0153786fd8594f75a995f341c408ef014e69917452a9fe99c511f0249aceb57b3045b707f1fd3f404e4086cfbf0aadcb3318db892

  • memory/1400-138-0x0000000000000000-mapping.dmp

  • memory/1400-139-0x0000000000400000-0x000000000043A000-memory.dmp

    Filesize

    232KB

  • memory/1996-142-0x0000000000000000-mapping.dmp

  • memory/3012-132-0x0000000000980000-0x0000000000AB2000-memory.dmp

    Filesize

    1.2MB

  • memory/3012-133-0x00000000059E0000-0x0000000005F84000-memory.dmp

    Filesize

    5.6MB

  • memory/3012-134-0x00000000054D0000-0x0000000005562000-memory.dmp

    Filesize

    584KB

  • memory/3012-135-0x0000000005460000-0x000000000546A000-memory.dmp

    Filesize

    40KB

  • memory/3012-136-0x0000000008D70000-0x0000000008E0C000-memory.dmp

    Filesize

    624KB

  • memory/3012-137-0x0000000009490000-0x00000000094F6000-memory.dmp

    Filesize

    408KB

  • memory/3120-140-0x0000000000000000-mapping.dmp