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Signature Details

To access the malware signature details page, go to.

  • Monitor > File Scanning > HTTP File Download
  • Monitor > File Scanning > Email Attachments
  • Monitor > File Scanning > SMB File Download

Click Partial File tab and Phase Sig ID link to go to the Signature Details page.

Use the Signature Details page to view the malware signature details. The malware signatures are provided by Juniper ATP Cloud to the SRX Series devices. When an SRX Series device detects a malware file, the device can block the file immediately based on these malware signatures and the advanced anti-malware (AAMW) policy that is configured on the SRX Series device. The malware signatures are shared with the SRX Series devices whenever there is an update in Juniper ATP Cloud. For each malware signature hit, the SRX Series device provides the malware signature hit report to Juniper ATP Cloud.

This page is divided into several sections:

  • Report False Positive—Click this button to launch a new screen to send a report to Juniper Networks, informing if the report is a false positive or a false negative. Juniper will investigate the report, however, this does not change the verdict. If you want to make a correction (mark system as clean) you must do it manually.

  • Threat Level—This is the threat level assigned (0-10). This box also provides the signature file name, threat category and the action taken.

  • Prevalence—Provides information on how often this malware has been seen, how many individual hosts on the network downloaded the file, and the protocol used.

Table 1: Signature Summary
Field Description
General Displays signature information of the associated file.
Static Analysis Displays information about file type or file source associated with the signature. The file types that are supported are PE/DLL, doc, docX Office - old format, office - new format, PDF, RTF)
Behavior Analysis Displays the behavior analysis for the file associated with the signature.
Network Activity Displays the network activity for the file associated with the signature.
Behavior Details Displays the behavior data for the file associated with the signature.

Signature Summary

The General tab displays the details for the file associated with the signature.The details include, file category, timestamp of when the signature was created, statistics about how often the signature was hit, the current status of the signature (enabled/disabled), and so on.

Figure 1: General Information General Information
Table 2: General Summary Fields

Field

Definition

Status

Threat Level

This is the assigned threat level 0-10. 10 is the most malicious.

Global Prevalence

How often this file has been seen across different customers.

Last Scanned

The time and date of the last scan to detect the suspicious file.

Signature Information
Platform The target operating system of the file. Example. Win32
Strain If possible, Juniper ATP Cloud determines the strain of malware detected. Example: Outbrowse.1198, Visicom.E, Flystudio.

Malware Name

If possible, Juniper ATP Cloud determines the name of the malware.

Type

If possible, Juniper ATP Cloud determines the type of threat. Example: Trojan, Application, Adware.

Category

If possible, Juniper ATP Cloud determines the category of threat.

Other Details

sha256 and md5

One way to determine whether a file is malware is to calculate a checksum for the file and then query to see if the file has previously been identified as malware.

Generated Timestamp The time when the signature was generated.
Status The current status of the signature (enabled/disabled).

HTTP Downloads

This section displays the list of hosts that have downloaded the suspicious file. Click the IP address to be taken to the Host Details page for this host. Click the Device Serial number to be taken to the Devices page. From there you can view device versions and version numbers for the Juniper ATP Cloud configuration, including profile, allowlist, and blocklist versions. You can also view the malware detection connection type for the device: telemetry, submission, or C&C event.

Static Analysis

Juniper ATP Cloud provides static analysis and machine learning to determine if the file is potentially malicious.

Behavior Analysis

Juniper ATP Cloud provides network behavioral analysis and machine learning to analyze the behavior of the sample, including the connections it makes to various hosts. However, the analysis is still for primarily sandboxed sample analysis and not for connection analysis.

Behavior analysis tab displays the signature information in a radar chart with malware categories or behaviors on each axis. This data helps us better identify the category of a malware and map that category to a severity.

The malware priority is classified into low, medium, and high.

Figure 2: Behavior analysis Behavior analysis
Table 3: Behavior Analysis Fields

Behavior Category

Sample Behavior Definition

Targeting

Checks volume information.

Fine-grained Behavior

Contains code to communicate with device drivers.

Contains code to delete services.

Memory allocated in system DLL range.

Obfuscation

Utilizes known code obfuscation techniques.

Evasion

Contains code to detect VMs.

Contains large amount of unused code (likely obfuscated code).

Contains code to determine API calls at runtime.

Persistence

Modifies registry keys to run application during startup.

Networking

Memory or binary contains internet addresses.

Network Activity

In the Network Activity section, you can view information in the following tabs:

  • Contacted Domains—If available, lists any domains that were contacted while executing the file in the Juniper ATP Cloud sandbox.

  • Contacted IPs—If available, lists all IPs that were contacted while executing the file, along with the destination IP’s country, ASN, and reputation. The reputation field is based on Juniper IP intelligence data destination.

  • DNS Activity— This tab lists DNS activity while executing the file, including reverse lookup to find the domain name of externally contacted servers. This tab also provides the known reputation of the destination servers.

Figure 3: Network activity Network activity

Behavior Details

This section displays the behavior data for the file associated with the signature.

Figure 4: Behavior details Behavior details