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Detect string obfuscation from Pikabot
B2B Cyber ​​Security ShortNews

A cybersecurity research team has developed an IDA plugin that can automatically decrypt the string obfuscation of the Pikabot malware loader. The code obfuscation techniques used by the malware to encrypt binary strings, including command and control (C2) server addresses, have previously made Pikabot discovery and technical analysis difficult. Pikabot rose to prominence after the defeat of Qakbot in August 2023 and emerged as a significant threat. Its encryption method involved advanced string encryption techniques that used a combination of AES-CBC and RC4 algorithms, making decryption a complex task for the security experts. Security analysts at Zscaler have now published a...

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Qakbot remains dangerous
B2B Cyber ​​Security ShortNews

Sophos X-Ops has discovered and analyzed a new variant of the Qakbot malware. These cases first emerged in mid-December and show that the Qakbot malware has continued to evolve despite law enforcement's successful dismantling of the botnet infrastructure last August. The attackers use even better methods to cover their tracks. The cases analyzed by Sophos X-Ops show that cybercriminals made concerted efforts to strengthen the malware's encryption. This has made it more difficult for defenders to analyze the malicious code. In addition, the attackers are now encrypting the…

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Invisibility cloak for malware services finally worthless 
B2B Cyber ​​Security ShortNews

Professional malware is successful when it uses clever obfuscation to evade detection by security solutions. However, the experts at security manufacturer ESET have now demystified the best-known cloak for malicious code – AceCryptor. This Cryptor-as-a-Service has been actively used by threat actors worldwide since 2016 to protect dozens of malware families. In 2021 and 2022 alone, ESET telemetry made more than 240.000 detections of this malware. That equates to more than 10.000 detections per month. AceCryptor is likely to be sold on the dark web or underground forums and is hugely popular with cybercriminals….

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