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Attacker Used AI to Build Custom PowerShell Recon Malware|Malware Hits Japan’s Largest Taxi Company Nihon Kotsu, Services Temporarily Suspended|CrashStealer: New macOS Infostealer Uses Signed Apps to Evade Gatekeeper|Lidl Notified Online Shop Customers in Germany, Belgium, and the Netherlands of a Data Breach|U.S. CISA adds a Cisco IOS flaw to its Known Exploited Vulnerabilities catalog|EU Targets FSB-Linked Hackers in New Sanctions Over Cyber Sabotage|Dutch Nationals Suspected in Odido Hack That Exposed Six Million Customers|Australia Alerts Organizations to Ongoing CMS Exploitation Attacks|Ryuk Ransomware Member Pleads Guilty Over Attacks on U.S. Organizations|Progress Told ShareFile Customers to Pull the Plug on Their Servers. Here’s What We Know.|SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 105|Security Affairs newsletter Round 585 by Pierluigi Paganini – INTERNATIONAL EDITION|Attacker Used AI to Build Custom PowerShell Recon Malware|Malware Hits Japan’s Largest Taxi Company Nihon Kotsu, Services Temporarily Suspended|CrashStealer: New macOS Infostealer Uses Signed Apps to Evade Gatekeeper|Lidl Notified Online Shop Customers in Germany, Belgium, and the Netherlands of a Data Breach|U.S. CISA adds a Cisco IOS flaw to its Known Exploited Vulnerabilities catalog|EU Targets FSB-Linked Hackers in New Sanctions Over Cyber Sabotage|Dutch Nationals Suspected in Odido Hack That Exposed Six Million Customers|Australia Alerts Organizations to Ongoing CMS Exploitation Attacks|Ryuk Ransomware Member Pleads Guilty Over Attacks on U.S. Organizations|Progress Told ShareFile Customers to Pull the Plug on Their Servers. Here’s What We Know.|SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 105|Security Affairs newsletter Round 585 by Pierluigi Paganini – INTERNATIONAL EDITION|
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Decrypting HiddenTear Ransomware for free with HT Brute Forcer

Good news for the victims of the dreaded HiddenTear Ransomware, the popular cybersecurity expert Michael Gillespie has devised a tool dubbed HT Brute Forcer that could allow decrypting files for free. In 2015, the Turkish security researchers Utku Sen published the HiddenTear ransomware, the first open source ransomware, for educational purposes. The original code was decryptable, for this reason, […]

hiddentear bruteforcer

Good news for the victims of the dreaded HiddenTear Ransomware, the popular cybersecurity expert Michael Gillespie has devised a tool dubbed HT Brute Forcer that could allow decrypting files for free.

In 2015, the Turkish security researchers Utku Sen published the HiddenTear ransomware, the first open source ransomware, for educational purposes.

The original code was decryptable, for this reason, many other variants based on it were decryptable too. 
HT Brute Forcer currently supports several HiddenTear variants, including:

8lock8, AnonCrack, Assembly, Balbaz, BankAccountSummary, Bansomqare Wanna, Blank, BloodJaws, Boris, CerberTear, CryptConsole2, CryptoKill, CyberResearcher, Data_Locker, Dev-Nightmare 2xx9, Diamond, Domino, Donut, dotRansom, Executioner, Executioner2, Executioner3, Explerer, FlatChestWare, Frog, Fuck_You, Gendarmerie, Horros, JobCrypter, Jodis, J-Ransomware, J-Want-To-Cry, Karmen, Kraken 2.0, Kratos, LanRan, Lime, Lime-HT, Luv, Matroska, MireWare, MoonCrypter, MTC, Nobug, Nulltica, onion3cry, OpsVenezuela, Paul, PayOrDie, Pedo, PGPSnippet, Poolezoor, Pransomware, Predator, Qwerty, Random6, Random6 2, Randion, RansomMine, Rootabx, Saramat, Shrug, ShutUpAndDance, Sorry, Symbiom, TearDr0p, Technicy, The Brotherhood, TheZone, tlar, TotalWipeOut, TQV, Ton, VideoBelle, WhiteRose, WhiteRose2, Zalupaid, ZenCrypt, Zenis, ZeroRansom, Zorro

Victims of the HiddenTear Ransomware could follow the step by step procedure, published by Bleeping Computer, to decrypt their files for free.

  • Click on the Browse Sample button and choose an encrypted PNG file. Experts suggest choosing the smaller one.
  • Click on the Start Bruteforce button to start brute forcing the decryption key. The process can take some time.
  • When the tool has found the encryption key, the decryptor will automatically decrypt the test file and ask the users to determine if it was correctly decrypted.
  • If the file was decrypted properly, users should save the discovered key and use it with the HiddenTear decryptor.
  • Download the standalone HiddenTear decryptor.
  • Double-click on the hidden-tear-decrypter.exe file to start the tool, enter the key that was discovered by the brute forcer and click on the Decrypt My Files button.
  • Once the decryption process has finished, it will display a screen stating how many files were decrypted.
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Pierluigi Paganini

(SecurityAffairs –HT Brute Forcer, ransomware)

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