• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

UK NCA arrested four people over M&S, Co-op cyberattacks

 | 

PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

 | 

Qantas data breach impacted 5.7 million individuals

 | 

DoNot APT is expanding scope targeting European foreign ministries

 | 

Nippon Steel Solutions suffered a data breach following a zero-day attack

 | 

Iranian group Pay2Key.I2P ramps Up ransomware attacks against Israel and US with incentives for affiliates

 | 

Hackers weaponize Shellter red teaming tool to spread infostealers

 | 

Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day

 | 

Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant

 | 

U.S. CISA adds MRLG, PHPMailer, Rails Ruby on Rails, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

 | 

IT Worker arrested for selling access in $100M PIX cyber heist

 | 

New Batavia spyware targets Russian industrial enterprises

 | 

Taiwan flags security risks in popular Chinese apps after official probe

 | 

U.S. CISA adds Google Chromium V8 flaw to its Known Exploited Vulnerabilities catalog

 | 

Hunters International ransomware gang shuts down and offers free decryption keys to all victims

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 52

 | 

Security Affairs newsletter Round 531 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

North Korea-linked threat actors spread macOS NimDoor malware via fake Zoom updates

 | 

Critical Sudo bugs expose major Linux distros to local Root exploits

 | 

Google fined $314M for misusing idle Android users' data

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Cyber Crime
  • Hacking
  • Malware
  • Avaddon ransomware gang shuts down their operations and releases decryption keys

Avaddon ransomware gang shuts down their operations and releases decryption keys

Pierluigi Paganini June 11, 2021

The Avaddon ransomware gang has shut down its operations and released the decryption keys to allow victims to recover their files for free.

Good news for the victims of the Avaddon ransomware gang, the cybercrime group has shut down its operations and provided the decryption keys to BleepingComputer website.

The group has also shut down its servers and deleted profiles on hacking forums, they also shut down their leak site.

This morning, BleepingComputer received a message from a source that was pretending to be the FBI that included a password and a link to a password-protected ZIP archive.

BleepingComputer shared the decryption keys with the security firm Emsisoft, which has released in the past free decryptors for multiple pieces of ransomware.

PSA: Avaddon appears to have shut down and released 2934 private keys of victims. A public Emsisoft decryption tool is coming soon. Do not pay. If you are a victim and want to know if your files can be decrypted, please reach out to fw@emsisoft.com. Thanks.

— Fabian Wosar (@fwosar) June 11, 2021

The security company already develop a free decryptor for the victims of the Avaddon ransomware.

“The Avaddon ransomware encrypts victim’s files using AES-256 and RSA-2048, and appends a random extension.” states Emsisoft.

We've just released a decryptor for #Avaddon #ransomware. https://t.co/4i7nexkT2U

— Emsisoft (@emsisoft) June 11, 2021

The decryptor allows the victims of the Avaddon ransomware to decrypt their files for free. The ransomware gang was active since June 2020, it was delivering its threat via malspam campaigns.

In the aftermath of the closing of the operation of Darkside gang, the Avaddon gang made the headlines by targeting multiple organizations in collaboration with the Conti gang.

“Furthermore, ransomware negotiation firms and incident responders saw a mad rush by Avaddon over the past few days to finalize ransom payments from existing unpaid victims Coveware CEO Bill Siegel has told BleepingComputer that Avaddon’s average ransom demand was around $600k.” reported BleepingComputer. “However, over the past few days, Avaddon has been pressuring victims to pay and accepting the last counteroffer without any push back, which Siegel states is abnormal.”

In May, the Federal Bureau of Investigation (FBI) and the Australian Cyber Security Centre (ACSC) warned of an ongoing Avaddon ransomware campaign targeting organizations worldwide in multiple industries, including government, finance, energy, manufacturing, and healthcare.

The alert published by the ACSC provides a list of countries under attack which includes the US, UK, Germany, France, China, Italy Brazil, India, UAE, France, and Spain.

Avaddon targets list

“The Australian Cyber Security Centre (ACSC) is aware an ongoing ransomware campaign utilising the Avaddon Ransomware malware. This campaign is actively targeting Australian organisations in a variety of sectors.” reads the alert published by ACSC. “The ACSC is aware of several instances where the Avaddon ransomware has directly impacted organisations within Australia.”

This advisory includes details about Techniques, Tools, and Procedures (TTPs) associated with the Avaddon group.

Experts speculate that the group was not completely retired, instead they are rebranding their operations.

Follow me on Twitter: @securityaffairs and Facebook

[adrotate banner=”9″][adrotate banner=”12″]

Pierluigi Paganini

(SecurityAffairs – hacking, ransomware)

[adrotate banner=”5″]

[adrotate banner=”13″]


facebook linkedin twitter

Cybersecurity cybersecurity news Hacking hacking news information security news malware Pierluigi Paganini Security Affairs Security News

you might also like

Pierluigi Paganini July 10, 2025
UK NCA arrested four people over M&S, Co-op cyberattacks
Read more
Pierluigi Paganini July 10, 2025
PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    UK NCA arrested four people over M&S, Co-op cyberattacks

    Cyber Crime / July 10, 2025

    PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

    Hacking / July 10, 2025

    Qantas data breach impacted 5.7 million individuals

    Data Breach / July 10, 2025

    DoNot APT is expanding scope targeting European foreign ministries

    APT / July 10, 2025

    Nippon Steel Solutions suffered a data breach following a zero-day attack

    Data Breach / July 09, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT