Resubmissions

24-07-2023 06:32

230724-haylwaag65 10

16-07-2023 18:15

230716-wwbacshb7z 10

Analysis

  • max time kernel
    149s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24-07-2023 06:32

General

  • Target

    2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe

  • Size

    924KB

  • MD5

    24948fffedf100ae5717a597279f2bd0

  • SHA1

    9682d3b718238fbc682d45cb66f67927a65ff584

  • SHA256

    2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53

  • SHA512

    a229bf77de9ddf1c9dd99c6bb24f6ddf21c782ca3a19488b921fba8fd36eaba1d4930d9e27176b63ee09a3843473d09a06acd6c367270abd58a80c3de136d4d9

  • SSDEEP

    12288:e6SlCKDiW1q9I6/kldSCGDyDg24xUMmFIDHmekod+ik4g8y3SoDpbBj0pV:bSwK5OPWUyCH1wrEloDptA

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

harolds.ooguy.com:6051

harold.2waky.com:6051

Mutex

79556390-7150-4551-9067-10cd33e6482e

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    harold.2waky.com

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-04-28T08:36:06.976087436Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    true

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    6051

  • default_group

    Acandy

  • 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

    79556390-7150-4551-9067-10cd33e6482e

  • mutex_timeout

    5000

  • prevent_system_sleep

    false

  • primary_connection_host

    harolds.ooguy.com

  • primary_dns_server

    8.8.8.8

  • request_elevation

    true

  • restart_delay

    5000

  • run_delay

    0

  • run_on_startup

    true

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 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 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe
    "C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4228
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GzgZEDIygQcf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7C8E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2200
    • C:\Users\Admin\AppData\Local\Temp\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe
      "{path}"
      2⤵
      • Checks whether UAC is enabled
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3944

Network

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\2122f46b7744ea7cabea57095f4cdcbcdcf176232cfae669e7119c5bd607bf53.exe.log
    Filesize

    507B

    MD5

    ab4c71d3ff6255edd4e5c1e09540f49e

    SHA1

    22e06bf4e258741b5df918061871cba998c50cea

    SHA256

    1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

    SHA512

    8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

  • C:\Users\Admin\AppData\Local\Temp\tmp7C8E.tmp
    Filesize

    1KB

    MD5

    416af52939aefe9393d7d16d737f64c4

    SHA1

    e7a816a279ef1aa7aac8626620a3e55119b7df5e

    SHA256

    20050729dda6b368b2bfedaea0e99f6bf388be8091c9b60ae50bb46c5ace427a

    SHA512

    a857d30ffb27ba584958788650a795b0fed70c41e65dd2f7009f7bd536ebc8cba4f3e6e8389306f748d883fdc6b5ffffb3b0c707e7ef1c961854f06b22022c62

  • memory/3944-148-0x0000000005B60000-0x0000000005B70000-memory.dmp
    Filesize

    64KB

  • memory/3944-143-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/3944-152-0x0000000005B60000-0x0000000005B70000-memory.dmp
    Filesize

    64KB

  • memory/3944-151-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7MB

  • memory/3944-149-0x0000000005900000-0x000000000590A000-memory.dmp
    Filesize

    40KB

  • memory/3944-146-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7MB

  • memory/4228-134-0x00000000003F0000-0x00000000004DE000-memory.dmp
    Filesize

    952KB

  • memory/4228-136-0x0000000007340000-0x00000000073D2000-memory.dmp
    Filesize

    584KB

  • memory/4228-147-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7MB

  • memory/4228-135-0x0000000007200000-0x000000000729C000-memory.dmp
    Filesize

    624KB

  • memory/4228-133-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7MB

  • memory/4228-139-0x0000000008000000-0x00000000085A4000-memory.dmp
    Filesize

    5MB

  • memory/4228-138-0x00000000073F0000-0x0000000007400000-memory.dmp
    Filesize

    64KB

  • memory/4228-137-0x0000000075290000-0x0000000075A40000-memory.dmp
    Filesize

    7MB