EDA2 (Malware Family)

EDA2

EDA2 is a successor of HiddenTear. Just like HiddenTear it was developed as an open-source project by a security researcher and published on Github. It was meant as "educational ransomware" and purposefully had flaws in the encryption process that allow decryption of ransomed files.

This backfired, when threat actors began to modify HiddenTear and EDA2 source code. Some modifications introduced bugs where encrypted files were destroyed, others fixed the encryption flaws and made decryption without a key impossible.

References

2020-04-14 ⋅ Palo Alto Networks Unit 42 ⋅ Adrian McCabe, Vicky Ray, Juan Cortes
Malicious Attackers Target Government and Medical Organizations With COVID-19 Themed Phishing Campaigns
Agent Tesla EDA2

2017-08-21 ⋅ Utku Sen Blog ⋅ Utku Sen
I'm Sorry For Hidden Tear and EDA2
EDA2 HiddenTear

2017-01-02 ⋅ Twitter (JaromirHorejsi) ⋅ Jaromír Hořejší
Tweet on Ransomware
EDA2

2016-01-25 ⋅ Bleeping Computer ⋅ Lawrence Abrams
Hidden Tear Ransomware Developer Blackmailed by Malware Developers using his Code
EDA2 HiddenTear

2016-01-23 ⋅ Github (utkusen) ⋅ Utku Sen
Github Repository of EDA2
EDA2

There is no Yara-Signature yet.

EDA2 Propose Change

References

EDA2