Threat Outbreak Alert RuleID31468: Email Messages Distributing Malicious Software on November 29, 2017

Medium Alert ID: 56076 First Published: 2017 November 29 17:08 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31468 may contain the following files: Name |...

Hackers Exploit Recently Disclosed Microsoft Office Bug to Backdoor PCs

A recently disclosed severe 17-year-old vulnerability in Microsoft Office that lets hackers install malware on targeted computers without user interaction is now being exploited in the wild to distribute a backdoor malware. First spotted by researchers at security firm Fortinet, the malware has...

Newly Observed Ursnif Variant Employs Malicious TLS Callback Technique to Achieve Process Injection

Introduction TLS Thread Local Storage callbacks are provided by the Windows operating system to support additional initialization and termination for per-thread data structures. As previously reported, malicious TLS callbacks, as an anti-analysis trick, have been observed for quite some time and...

Threat Outbreak Alert RuleID31474: Email Messages Distributing Malicious Software on November 28, 2017

Medium Alert ID: 56068 First Published: 2017 November 28 18:47 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31474 may contain the following files: Name |...

Newly Observed Ursnif Variant Employs Malicious TLS Callback Technique to Achieve Process Injection

Introduction TLS Thread Local Storage callbacks are provided by the Windows operating system to support additional initialization and termination for per-thread data structures. As previously reported, malicious TLS callbacks, as an anti-analysis trick, have been observed for quite some time and...

Threat Outbreak Alert RuleID31405: Email Messages Distributing Malicious Software on November 28, 2017

Medium Alert ID: 56063 First Published: 2017 November 28 12:36 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31405 may contain the following files: Name |...

Threat Outbreak Alert RuleID31433: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56061 First Published: 2017 November 27 23:37 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31433 may contain the following files: Name |...

Threat Outbreak Alert RuleID31431: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56059 First Published: 2017 November 27 23:37 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31431 may contain the following files: Name |...

Threat Outbreak Alert RuleID31458: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56055 First Published: 2017 November 27 14:40 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31458 may contain the following files: Name |...

Threat Outbreak Alert RuleID31453: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56057 First Published: 2017 November 27 13:25 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31453 may contain the following files: Name |...

Threat Outbreak Alert RuleID31448: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56054 First Published: 2017 November 27 13:25 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31448 may contain the following files: Name |...

Threat Outbreak Alert RuleID31452: Email Messages Distributing Malicious Software on November 27, 2017

Medium Alert ID: 56056 First Published: 2017 November 27 13:17 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31452 may contain the following files: Name |...

Threat Outbreak Alert RuleID31428: Email Messages Distributing Malicious Software on November 24, 2017

Medium Alert ID: 56042 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31428 may contain the following files: Name |...

Threat Outbreak Alert RuleID31425: Email Messages Distributing Malicious Software on November 24, 2017

Medium Alert ID: 56041 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31425 may contain the following files: Name |...

Threat Outbreak Alert RuleID31423: Email Messages Distributing Malicious Software on November 23, 2017

Medium Alert ID: 56036 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31423 may contain the following files: Name |...

Threat Outbreak Alert RuleID31402: Email Messages Distributing Malicious Software on November 23, 2017

Medium Alert ID: 56035 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31402 may contain the following files: Name |...

Threat Outbreak Alert RuleID31427: Email Messages Distributing Malicious Software on November 23, 2017

Medium Alert ID: 56033 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31427 may contain the following files: Name |...

Threat Outbreak Alert RuleID31429: Email Messages Distributing Malicious Software on November 24, 2017

Medium Alert ID: 56043 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31429 may contain the following files: Name |...

Threat Outbreak Alert RuleID31416: Email Messages Distributing Malicious Software on November 24, 2017

Medium Alert ID: 56038 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31416 may contain the following files: Name |...

Threat Outbreak Alert RuleID31440: Email Messages Distributing Malicious Software on November 24, 2017

Medium Alert ID: 56046 First Published: 2017 November 27 13:16 GMT Version: 1 Summary Cisco Security has detected significant activity related to spam email messages distributing malicious software. Email messages that are related to this threat RuleID31440 may contain the following files: Name |...