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Malware.AI.4277518362 false positive


ConradS
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Additional information - this is a new version which was only released a few days ago. Quite expectedly there are a number of false positves.

Any Remote Utilities files including this one are signed with either an EV Code Signing certificate (Digicert) or Code Signing certificate (Comodo) issued to Remote Utilities LLC.

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Sorry for bothering you again, but here is a log our customer sent to us right now (I removed some personally identifiable information from the log):

Quote

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 3/12/21
Scan Time: 8:52 AM
Log File: 3b618bdc-833a-11eb-95e4-00ffc63d3be6.json

-Software Information-
Version: 4.3.0.98
Components Version: 1.0.1173
Update Package Version: 1.0.38047
License: Premium

-System Information-
OS: Windows 10 (Build 19042.867)
CPU: x64
File System: NTFS
User: ---------------

-Scan Summary-
Scan Type: Custom Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 1173
Threats Detected: 1
Threats Quarantined: 0
Time Elapsed: 0 min, 25 sec

-Scan Options-
Memory: Disabled
Startup: Disabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 0
(No malicious items detected)

File: 1
Malware.AI.4289743849, C:\USERS\ ---------------\APPDATA\ROAMING\REMOTE UTILITIES FILES\VIEWER_69110.MSI, No Action By User, 1000000, 0, 1.0.38047, 2A9448FAC39411FDFFB04BE9, dds, 01154148, 68DDFAD0B160D131CDE7021185253C2E, 1FF1DE4EB42CD6D0D7615A0D9F61E4DFDAF3B33FE48816D960CB3FDF176EC74C

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

 

One question to you, sorry if that sounds a bit sarcastic. Are Malware virus analysts aware of the existing of digital certificates? I mean, that would really helped them a lot in their work if they were.

For example, they could simply exclude the files digitally signed by Remote Utilities LLC (EV Code Signing issued by Digicert and Comodo) from the detection. That would save us all time and effort. What's the point detecting the same version/file over and over again if it's signed and not altered?

 

 

 

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  • Staff

This is fixed. It is not detected locally.  Virustotal isnt 100% indicator as certain whitelisting is not possible on virustotal that is in the local client. As far as signatures we dont like to broad whitelist remote utilities in case malware misuses them. We have seen it all to common in the past. For example there is one tech support scam group that uses a validly signed remote utility. It is registered to that group only and is digitally signed by the manufacturer of the software. If we blankly signed with digisig then the tech support scammers get a pass. 

 

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Hello,

Quote

As far as signatures we dont like to broad whitelist remote utilities in case malware misuses them. We have seen it all to common in the past.

 

 

So you never whitelist remote access software based on digital signature? What about TeamViewer?

 

Quote

For example there is one tech support scam group that uses a validly signed remote utility. It is registered to that group only and is digitally signed by the manufacturer of the software. If we blankly signed with digisig then the tech support scammers get a pass.

Tech support scam has nothing to do with malware. It is social engineering.

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