Overview

overview

10

Static

static

0RY9t35YcXOZNbf.exe

windows7_x64

10

0RY9t35YcXOZNbf.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 00:12

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General

  • Target

    0RY9t35YcXOZNbf.exe

  • Size

    594KB

  • MD5

    0b5122869b9f16726f19a5f22d32eaad

  • SHA1

    61d5174d14e9c5fce2e441619d7064c67fc969ac

  • SHA256

    320b9847b87acc72f35b69c9767584a8627d6cce512d65d45ca5bbc62b94230e

  • SHA512

    d3b41e245aed263e9f4938e65cb4189bc26cdf996354722334a314e40affdf5961de0f8d0972f30818736d81c52fb5537e99945a274cac9c91a6904e9068ca6b

Score
10/10
nanocorekeyloggerpersistencespywarestealertrojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

79.134.225.71:1985

127.0.0.1:1985
Mutex

b906c32a-7c7b-408f-aea8-c2cf051540c7

Attributes
  • activate_away_mode

    true

  • backup_connection_host

    127.0.0.1

  • backup_dns_server

    8.8.4.4

  • buffer_size

    65535

  • build_time

    2020-05-08T07:10:15.167894836Z

  • bypass_user_account_control

    true

  • bypass_user_account_control_data

  • clear_access_control

    false

  • clear_zone_identifier

    false

  • connect_delay

    4000

  • connection_port

    1985

  • default_group

    Cherry

  • 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

    b906c32a-7c7b-408f-aea8-c2cf051540c7

  • mutex_timeout

    5000

  • prevent_system_sleep

    true

  • primary_connection_host

    79.134.225.71

  • 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.

    keyloggertrojanstealerspywarenanocore
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 2 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.

    persistence
  • Suspicious behavior: EnumeratesProcesses 7 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\0RY9t35YcXOZNbf.exe
    "C:\Users\Admin\AppData\Local\Temp\0RY9t35YcXOZNbf.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2176
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp82CC.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3760
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:3732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp82CC.tmp
    Filesize

    1KB

    MD5

    ab9f8a9574d9209cd8666decb37e33cc

    SHA1

    b768b98d37b96bcf5eeeb4bae10589a196b66db2

    SHA256

    2c052172f943620c36053efd2ab1d6ef9fbb671c55669b9f49430f0f7acd7704

    SHA512

    5059538580cce17a2c7516e3117297310455e38ff32d51c6e17ef188448ce3567f9c968ad478df725ed2ce8630ceee2340246264a6e60877895591a67d45da70

    Download Submit
  • memory/2176-130-0x0000000074660000-0x0000000074C11000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3732-133-0x0000000000000000-mapping.dmp
    Download
  • memory/3732-134-0x0000000000400000-0x0000000000438000-memory.dmp
    Filesize

    224KB

    Download
  • memory/3732-135-0x0000000074660000-0x0000000074C11000-memory.dmp
    Filesize

    5.7MB

    Download
  • memory/3760-131-0x0000000000000000-mapping.dmp
    Download