Isfb

ISFB, also known as Gozi or Ursnif, is a form of malware that has been a significant part of the cyberthreat landscape for several years. This malicious software is designed to exploit and damage computer systems, often infiltrating through suspicious downloads, emails, or websites without the user's knowledge. Once inside, it can steal personal information, disrupt operations, or even hold data hostage for ransom. ISFB, which is particularly prevalent in Poland, is being replaced with something that has roots in the same Carberp leak. It's interesting to note that the longevity of Gozi malware's use by criminals is partially attributed to an incident where the source code to the Gozi "ISFB" variant leaked sometime between 2013 and 2015. The BatLoader malware is a serious threat that delivers additional malware and tools, including the notorious Vidar Stealer and ISFB. Recently, eSentire conducted a comprehensive analysis of BatLoader, revealing its capability to drop several well-known malware or malicious tools such as ISFB, SystemBC RAT, Redline Stealer, and Vidar Stealer. Furthermore, BatLoader has the potential to deliver other malware and tools, including ISFB, Vidar Stealer, Cobalt Strike, Syncro RMM, and SystemBC RAT via fake installers. The downloaded malware samples are typically bankers like KBot and Gozi ISFB. In recent events, on March 6, 2023, Palo Alto Networks Unit 42 reported via Twitter about Gozi (ISFB/Ursnif) malware targeting Italy. A few months later, scripts began delivering various types of banking malware such as Tinba, Ramnit, or ISFB. Threat researchers describe this evolving threat as "frighteningly lucrative, even compared to the already lucrative cybercrime market." Variations based on ISFB, including GozNym or Dreambot, are still prevalent today. In February 2016, GozNym became popular again after incorporating leaked ISFB code.