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False Positives for ANSMTP SMTP component (aosmtp.mail)


daviddg
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I got these false positives for the ANSMTP component AKA aosmtp.mail or aosmtp.dll (I use this library in a few freeware developments). The original developer can be found here:

http://www.emailarchitect.net/WebApp/Company.asp

An overview of the component can be found here:

http://www.emailarchitect.net/webapp/smtpcom/

Below the MBAM log per forum instructions:

Malwarebytes' Anti-Malware 1.30

Database version: 1321

Windows 5.1.2600 Service Pack 2

26/10/2008 12:55:12

mbam-log-2008-10-26 (12-55-07).txt

Scan type: Quick Scan

Objects scanned: 61545

Time elapsed: 2 minute(s), 3 second(s)

Memory Processes Infected: 0

Memory Modules Infected: 0

Registry Keys Infected: 11

Registry Values Infected: 1

Registry Data Items Infected: 0

Folders Infected: 0

Files Infected: 0

Memory Processes Infected:

(No malicious items detected)

Memory Modules Infected:

(No malicious items detected)

Registry Keys Infected:

HKEY_CLASSES_ROOT\aosmtp.fastsender (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\TypeLib\{ff14b02b-6ee4-400f-a729-b0ea35f921c2} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\Interface\{1ecc44fb-970d-4bc8-90e3-002da4dd21b8} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\Interface\{63bd4ee4-660b-434d-a54b-7c1f53e2fedd} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\Interface\{6d2c09c4-ec95-4251-81fd-1cd01fd8ae44} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\Interface\{d622e87a-35f9-4fb2-afee-4f5bf8407c7a} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\CLSID\{69620165-77dd-44ee-995c-3632e525a22b} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\CLSID\{f8d07b72-b4b4-46a0-acc0-c771d4614b82} (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\aosmtp.fastsender.1 (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

HKEY_CLASSES_ROOT\aosmtp.mail (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019271256917246724191467216721142123661

714666868171468242418692123182167251994]

HKEY_CLASSES_ROOT\aosmtp.mail.1 (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019271256917246724191467216721142123661

714666868171468242418692123182167251994]

Registry Values Infected:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs\C:\WINDOWS\system32\aosmtp.dll (Spyware.Banker) -> No action taken. [4054423730528190886683701535667976708313019223262319171823221424246969142121707

014262622681420232019702219226619196794]

Registry Data Items Infected:

(No malicious items detected)

Folders Infected:

(No malicious items detected)

Files Infected:

(No malicious items detected)

--

Thank you very much.

Kind regards,

David.

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http://www.sophos.com/security/analyses/vi...jbancosbdo.html <- click the more info tab .

{69620165-77dd-44ee-995c-3632e525a22b} <- this is what we are actually hitting , MBAM links to the rest on its own .

Researching this I get a lot of malware info and removal guides .

http://www.google.com/search?num=100&h...amp;btnG=Search

I think the best case senario here is that you are using a dll that is used far more often as part of malware installs than it is for legit apps .

If you would please zip and attach the file we are hitting (C:\WINDOWS\system32\aosmtp.dll) so I can take a closer look at it .

I do not see it in your log though , makes me wonder what exactly is going on here because from your log it seems that the actual file is not on your system .

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I think the best case senario here is that you are using a dll that is used far more often as part of malware installs than it is for legit apps .

I'm afraid you are right...

If you would please zip and attach the file we are hitting (C:\WINDOWS\system32\aosmtp.dll) so I can take a closer look at it .

I do not see it in your log though , makes me wonder what exactly is going on here because from your log it seems that the actual file is not on your system .

Probably because I performed a Quick Scan. A Full Scan reveals the aosmtp.dll.

Please see attachment: inside you'll find the aosmtp.dll, the aosmtp header files for Visual C++ and the MBAM log from the full scan.

Cheers,

David

aosmtp.zip

aosmtp.zip

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I am removing the single GUID that I think is detecting all of this .

The file itself is clean , as much as I would like to keep it in defs I just dont think I can .

Scan again once you have defs version 1324 .

I did a few scans with defs version 1324, 1325 and 1328 but MBAM came up with the same results I'm afraid (see latest log attached)...

Cheers,

David.

mbam_log_2008_10_27__17_23_12_.txt

mbam_log_2008_10_27__17_23_12_.txt

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Turns out that redundancy was hitting now (a different GUID that links to the same file) :

{f8d07b72-b4b4-46a0-acc0-c771d4614b82}

I did some more checking and it seems that there is also a third layer on this file in defs , its TypeLib :

{ff14b02b-6ee4-400f-a729-b0ea35f921c2}

I am removing this as well , with three layers gone lets hope that it is now completely clear .

1329 is the update that will have this .

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{ff14b02b-6ee4-400f-a729-b0ea35f921c2}

I am removing this as well , with three layers gone lets hope that it is now completely clear .

1329 is the update that will have this .

The new scan came up clear now - so all is fine.

Many thanks to clear this up Bruce, appreciate it!

Cheers,

David

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