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PC randomly restarted and I got a little paranoid, any help?

I don't know if this is the right subreddit, so my apologies and delete this post if its not appropriate. about an hour ago my PC randomly restarted, no warning. I got scared and noticed that my avira antivirus was turned off and not…

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I don't know if this is the right subreddit, so my apologies and delete this post if its not appropriate.

about an hour ago my PC randomly restarted, no warning. I got scared and noticed that my avira antivirus was turned off and not signed in for some reason. I immediately turned it back on and did a full scan with it, no threats. I then did a Malwarebytes pro scan, no threats. and now im doing a Windows Defender full scan. so far no threats (but apparently it has 4 hours left to go.

I then checked online how to see if anything was doing stuff on my PC without knowing (probably not the smartest thing) and a website recommended going going start > run > recent > group by date modified and upon doing that I found 4 things recently modified 2 files callled threat// and a .Ink shortcut file for 'The internet'. after the avira scan was completed I checked back in the recent window to find that the threat// files changed to windowsdefender--- files and the internet shortcut was still there. I panicked and deleted all 3 of them.

I don't understand if any of this is bad or not considering no threats were detected yet, but that recent folder also seems not be on my C drive or D drive so maybe the antivirus or antimalware cant access whatever void its in? am I overreacting?

I should also point out before the restart I had just finished downloading some torrents, im not sure if my antivirus was off the whole time because I only noticed after the restart.

submitted by /u/Lazarus_7
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1. Sofort-Triage & Abwehrmaßnahmen

SOC Incident Playbook: Vulnerability Remediation & Verification
Syntax validiert (0 Fehler)
title: Detect Exploitation - PC randomly restarted and I got a little paranoid, any help?
id: d349b2e9-3461-44dc-b445-2c23ddf3c2b9
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
  - https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-27
logsource:
  category: network_connection
  product: any
detection:
  selection:
      CommandLine|contains:
        - 'exploit'
  condition: selection
falsepositives:
  - Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
  - attack.initial_access
Syntax validiert (0 Fehler)
rule CTI_Threat_Indicator {
    meta:
        author = "iShareStuff CTI Automated Detection Engine"
        date = "2026-09-27"
        description = "YARA Signature for "
    strings:
        $str = "PC randomly restarted and I go" ascii wide
    condition:
        any of them
}
Syntax validiert (0 Fehler)
index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("PC randomly restarted and I got a little")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - count
Syntax validiert (0 Fehler)
message: "*PC randomly restarted and I got a little*"
Syntax validiert (0 Fehler)
CommonSecurityLog
| where Message has "PC randomly restarted and I got a little"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc

2. Cyber Threat Intelligence & Forensik

CTI Threat Relationship Graph2 Knoten / 1 Relationen
CVE / Incident Software MITRE ATT&CK CWE Weakness IoC
🎯
MITRE ATT&CK Matrix Navigator 14 Taktiken
Reconnaissance
-
Resource Development
-
Initial Access
Execution
Persistence
-
Privilege Escalation
Defense Evasion
Credential Access
-
Discovery
-
Lateral Movement
-
Collection
-
Command and Control
Exfiltration
-
Impact
tsecurity.de Cognitive Threat RAG
Fokus-Vektor:

Analyse für identifizierte Bedrohung auf Basis von Live-CTI (ENISA EUVD): CVSS 0.0 · EPSS 0.0% · CISA KEV: nein. Handlungsableitung aus den verlinkten Hersteller-Quellen.

🛡️ Angriffsfläche & Exposure

Netzwerk/Remote-Zugriff ohne Vorauthentifizierung möglich.

⚡ Empfohlene Sofortmaßnahmen
  • 1. Perimeter-Inspektion: Relevante Portfreigaben und exponierte Endpunkte unverzüglich scannen.
  • 2. Patch-Applikation: Hersteller-Hotfix einspielen oder betroffene Daemons in isolierte DMZ-Segmente überführen.
  • 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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