Backdoor:W32/Binanen.A
Summary
A dropper Trojan that contains malicious or potentially unwanted software, which it 'drops' and installs on the affected system.
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:
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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.
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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.
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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
Binanen.A creates a dummy iexplore.exe process, and runs its malicious activity by silently dropping the following file:
- C:\windows\system32\winimet.dll
It also copies itself to:
- C:\windows\system32\binanen.exe
And, creates the following registry keys:
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{26D37492-FEC2-C272-9882-6D97A521F122}
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{761CC820-6EC0-5921-1400-8442C1E2FB90}
Payload
Once the malware is executed, the dropped file will try to disguise itself under a true process name and will be injected into a hidden dummy process. Then, it will execute certain command lines such asipconfig, which can be used to retrieve IP address, subnet mask, and default gateway.
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