Virus:W32/Expiro.A

Classification

W32/Expiro, PE_EXPIRO.A, Expiro.A, W32.Kakavex, Virus.Win32.Expiro.a, W32/Expiro.A

Summary

Expiro.A is a Windows executable file infecting virus. It is also capable of stealing credit card information gathered from the affected machine.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.

Technical Details

Expiro.A is a Windows executable file infecting virus. It is also capable of stealing credit card information gathered from the affected machine. Upon execution, this virus recursively looks for link files (.LNK) inside drives C: to Z: starting from the root directory and subdirectories and tries to infect the link's target Windows executable. Infected files grow in size and four additional sections are appended at the end of each file. The following describes the appended section details which includes the name, virtual size and physical size, respectively.

.data 00020000 0000EA00
.text 0000AD40 0000AD40
.bss 00005BD8 00000000
.data 00001A00 00001A00

Expiro.A creates a duplicate file alongside of infected files named with an .IVR extension. This identifies files it has already infected. Example:

%windir%\system32\notepad.exe %windir%\system32\notepad.ivr

This virus steals credit card information via a keylogger scheme. While the virus is active in memory, it monitors and logs credit card information and steals user input data that may be triggered when browsing one of these sites: