It is not unusual for malspam authors to encrypt the malicious files that they attach to messages they send out. Whether they encrypt the malicious file itself (as in the case of a password-protected Office document) or embed it in an encrypted archive, encryption can sometimes help attackers to get their creations past e-mail security scans.
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One way to fail at malspam - give recipients the wrong password for an encrypted attachment , (Wed, Jul 14th)
It is not unusual for malspam authors to encrypt the malicious files that they attach to messages they send out. Whether they encrypt the malicious file itself (as in the case of a password-protected Office document) or embed it in an…
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Syntax validiert (0 Fehler)
title: Detect Exploitation - One way to fail at malspam - give recipients the wrong password for an encrypted attachment , (Wed, Jul 14th)
id: 57c742c1-6124-4d56-a43c-f6dd107f3e57
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-26
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessSyntax validiert (0 Fehler)
rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-26"
description = "YARA Signature for "
strings:
$str = "One way to fail at malspam - g" ascii wide
condition:
any of them
}Syntax validiert (0 Fehler)
index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("One way to fail at malspam - give recipi")
| 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 - countSyntax validiert (0 Fehler)
message: "*One way to fail at malspam - give recipi*"Syntax validiert (0 Fehler)
CommonSecurityLog
| where Message has "One way to fail at malspam - give recipi"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc2. Cyber Threat Intelligence & Forensik
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Reconnaissance
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Resource Development
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Initial Access
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Command and Control
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Impact
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