Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:19

General

  • Target

    Payment Confirmation.scr

  • Size

    813KB

  • MD5

    26325d99df3eeb5f6f39f9eb45ae3bee

  • SHA1

    54e06e4ef19e4209c023724a1863cbf752ea67f8

  • SHA256

    b8d17b00725d58556c468f413f0825f5ac4fe19734898645d9db2f2f0be5e1af

  • SHA512

    8803e0ed820fa0916324169e5ab7f32bc88c4bf0a5b8b400efe5bec8acf1ebad7aec3238713d9be6adbbb59d4652cac4caae281ebc25dc9fa0a864bc3b62a407

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.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 10 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\Payment Confirmation.scr
    "C:\Users\Admin\AppData\Local\Temp\Payment Confirmation.scr" /S
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5275.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4608
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1268

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp5275.tmp
    Filesize

    1KB

    MD5

    ab9f8a9574d9209cd8666decb37e33cc

    SHA1

    b768b98d37b96bcf5eeeb4bae10589a196b66db2

    SHA256

    2c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704

    SHA512

    5059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70

  • memory/1268-135-0x0000000000000000-mapping.dmp
  • memory/1268-136-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

  • memory/1268-137-0x0000000005A00000-0x0000000005FA4000-memory.dmp
    Filesize

    5.6MB

  • memory/1268-138-0x00000000053D0000-0x00000000053DA000-memory.dmp
    Filesize

    40KB

  • memory/3044-130-0x0000000000770000-0x0000000000842000-memory.dmp
    Filesize

    840KB

  • memory/3044-131-0x0000000007910000-0x00000000079AC000-memory.dmp
    Filesize

    624KB

  • memory/3044-132-0x0000000007A50000-0x0000000007AE2000-memory.dmp
    Filesize

    584KB

  • memory/4608-133-0x0000000000000000-mapping.dmp