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EyLamo Ransomware

Posted: June 27, 2017

Threat Metric

Threat Level: 10/10
Infected PCs: 76
First Seen: June 27, 2017
OS(es) Affected: Windows

The EyLamo Ransomware is a modified version of Hidden Tear, which was meant to demonstrate how threatening, file-encrypting attacks can lock files for profit. It still can encode your media to stop you from opening them and uses multiple means of delivering its ransom notes to ask for money. One always should try free recovery options first, and malware experts suggest deleting the EyLamo Ransomware with anti-malware tools before recovering the encoded media from backups, when practical.

More Extortionists Coming out of Hiding

The arguably poorly-named Hidden Tear is fast becoming one of the most widely distributed of file-enciphering Trojans among threat actors with negligible programming experience. Although waiting for the symptoms of an attack to occur usually will provide results, the cost of the delay can place your files in a scenario where they're irretrievable. As one of many examples, our malware experts recommend looking at the newly made the EyLamo Ransomware.

The EyLamo Ransomware, named for its self-identified author, uses most of the code of Hidden Tear with few changes, besides providing new ransoming demands. Effects of an infection include the following symptoms and attacks:

  • The EyLamo Ransomware scans the PC without displaying a user interface, searching for files that it can determine by their formats, filename strings, sizes or locations. Content worth encrypting (such as documents, pictures, or audio) is encoded with an AES cipher to lock it from being readable.
  • The Trojan also swaps the victim's desktop wallpaper with a custom image that informs them about the attack and tells them to read the ransom note.
  • Lastly, the Notepad file serving as a ransoming message asks you to pay either Bitcoins or 'kebab' (the latter, most likely, sarcastically) to decrypt and unlock your files.

The Issues with Giving Con Artists the Benefit of the Doubt

While the EyLamo Ransomware does give a wallet address for paying, it eschews some of the most important (from the view of a victim) associated information. By not using an identification number or other means of correlating infections with Bitcoin payments, the EyLamo Ransomware leaves its victims extremely open to paying without anything back for the price. Furthermore, the EyLamo Ransomware's family of Hidden Tear is one that malware analysts are noting as being highly compatible with freeware decryptors that will not charge for the decoding process currently.

Although the EyLamo Ransomware's author's name contains some trace Spanish, all of the Trojan's components communicate in English and provide minimal hints of the campaign's geographical spread. The Trojan may be bundling with other downloads, circulating with the help of other threats, such as the RIG Exploit Kit or be attached to forged spam e-mail. Most anti-malware products are capable of covering these infection vectors, if allowed, and can remove the EyLamo Ransomware without its file-locking attack having a chance to trigger.

Hidden Tear has never been less 'hidden' than recently, but threat actors appear to be making enough profit off of exploiting it to continue the practice. Stopping to consider the dangers of ransoms or the virtues of backups is an act with a self-evident payoff for thwarting the EyLamo Ransomware and similar campaigns.

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