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sneaky move on .exe act as .jpg - Ransomware decoy?


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#1 samwiseOrgin

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Posted 12 December 2017 - 12:32 AM

Good day community!

 

A client of mine received a mail shown as this image

The content of the mail is a complainant saying receiver of the email has used sender's one of the copyrighted images on the company's website w/o any agreement. And it goes as "we don't want to file a lawsuit. Attached is the images you have pirated from"

After downloading and extracting the contents from the attachment as shown in this image

 

shows 2 .jpg and 2 .doc in the name

however as you see in the description shows it's in fact, .exe

Did my client just prevent him/herself from an Ransom-ware attack? 



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#2 samwiseOrgin

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Posted 12 December 2017 - 01:30 AM

Please reference this case SHA1: ce3f3ddb0eba2ea3f0439aa5434c1a5ba58fa3af

 

I reckon the reference SHA1 code was given to me due to lack of Ransomnote/No encrypted file? 
I was trying to figure out whether the email address of the sender would flag something... Guess not :/ 



#3 quietman7

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Posted 12 December 2017 - 06:31 AM


Yes, if ID Ransomware cannot identify the infection, you are to post the case SHA1 it gives you for Demonslay335 to manually inspect the files.

Samples of suspicious executable's (installer, malicious files, attachments) that you suspect were involved in causing the infection can be submitted (uploaded) here with a link to this topic. There is a "Link to topic where this file was requested" box under the Browse button...it's best to compress large files before sharing. Doing that will be helpful with analyzing and investigating by our crypto malware experts.
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#4 Demonslay335

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Posted 12 December 2017 - 10:01 AM

The sender's email address is probably just a hacked account anyways. I don't store email addresses attributed with spam.

 

We'd need the executable(s) to analyze anything.


logo-25.pngID Ransomware - Identify What Ransomware Encrypted Your Files [Support Topic]

ransomnotecleaner-25.png RansomNoteCleaner - Remove Ransom Notes Left Behind [Support Topic]

cryptosearch-25.pngCryptoSearch - Find Files Encrypted by Ransomware [Support Topic]

If I have helped you and you wish to support my ransomware fighting, you may support me here.


#5 samwiseOrgin

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Posted 12 December 2017 - 10:15 AM

I will let you know once it goes through 



#6 quietman7

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Posted 12 December 2017 - 10:38 AM

These are some common folder variable locations malicious executables and .dlls hide:
  • %SystemDrive%\ (C:\)
  • %SystemRoot%\ (C:\Windows, %WinDir%\)
  • %UserProfile%\
  • %UserProfile%\AppData\Roaming\
  • %AppData%\
  • %LocalAppData%\
  • %ProgramData%\ / %AllUserProfile%\
  • %Temp%\ / %AppData%\Local\Temp\
Note: Some folders like %AppData% are hidden by the operating system so you may need to configure Windows to show hidden files & folders.

Also check the history logs and quarantine folders for your anti-virus and other security scanning tools to see if they found and removed any malware possibly related to the ransomware.
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#7 samwiseOrgin

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Posted 12 December 2017 - 07:59 PM

Unfortunate for us, he had deleted all the executable files  as well as the email...  :( 



#8 quietman7

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Posted 12 December 2017 - 08:43 PM


Without the malware file itself to analyze, our crypto malware experts most likely will not be able to help.
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#9 samwiseOrgin

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Posted 13 December 2017 - 12:51 AM

Disregard what i have said. I am awaiting on my client to send ne the content.

#10 quietman7

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Posted 13 December 2017 - 07:25 AM

Ok.
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#11 samwiseOrgin

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Posted 13 December 2017 - 08:24 PM

I was contacted by client he had deleted the malware and the email itself from his computer. 

I am not going to hassle over to recover those files 

While it might be helpful in the future for others. I am swamped with work and I can not devote any more time on this matter. 

After all he was never infected. 

 

Thank you for your help



#12 quietman7

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Posted 13 December 2017 - 08:53 PM

You're welcome on behalf of the Bleeping Computer community.
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