Cyberknight

LockBit 1.0 ransomware, also previously known as “.abcd” ransomware, is a specific strain of malware that operates as Ransomware-as-a-Service (RaaS), encrypting files on infected systems and demanding payment from victims in exchange for decryption keys. Here are more precise details about LockBit 1.0 ransomware:

1. First Appearance: LockBit 1.0 ransomware was first observed in the cybersecurity landscape in September 2019. It’s an initial variant released of the LockBit cybercriminal group and has since undergone several iterations and updates.
2. Infection Vector: LockBit 1.0 ransomware primarily spreads through various infection vectors, including phishing emails, malicious attachments, exploit kits, and vulnerabilities in software or systems. Attackers may employ social engineering tactics to trick users into executing the malware payload unwittingly.
3. Encryption Mechanism: Upon infecting a system, LockBit 1.0 ransomware employs robust encryption algorithms such as RSA or AES to encrypt files stored on local drives and network shares. This encryption process renders the files inaccessible to the victim without the decryption key, which is held by the attackers.
4. Ransom Note and Payment: Following encryption, LockBit 1.0 ransomware typically presents victims with a ransom note containing instructions for payment. The note outlines the ransom amount, usually demanded in cryptocurrency like Bitcoin, and provides details on how to contact the attackers for further instructions on payment and decryption.
5. Data Exfiltration Capability: One distinguishing feature of LockBit 1.0 ransomware is its ability to exfiltrate sensitive data from compromised systems before encrypting files. This dual-threat approach allows attackers to not only extort ransom payments for decryption keys but also threaten to leak or sell stolen data if ransom demands are not met.
6. Persistence and Evasion Techniques: LockBit 1.0 ransomware employs various techniques to maintain persistence on infected systems and evade detection by security software. These techniques may include altering system settings, disabling security tools, and employing anti-analysis methods to hinder detection and removal efforts.
7. Mitigation and Recovery: To mitigate the risk of LockBit 1.0 ransomware attacks, organizations should implement robust cybersecurity measures such as regular data backups, endpoint protection solutions, user education on phishing awareness, and timely software patching. In the event of an infection, organizations should follow incident response protocols, isolate affected systems, and consider options for recovery, including data restoration from backups and collaboration with cybersecurity professionals.

See more details on the Cybersecurity and Infrastructure Security Agency (CISA) website.