July 2026 Report Details Malware, Phishing and Data-Leak Risks in the Financial Sector

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Summary

A July 2026 review of financial-sector threats reports phishing-led malware chains, credentials leaked through Telegram, dark-web data-sale claims involving financial organizations, and hacktivist DDoS claims that remain unverified.

Key points

  • Phishing led initial-stage malware detections at 1.7, while droppers and downloaders were most prevalent in the second stage at 1.7.
  • Phishing, loaders and backdoors made up about 68% of detections; the report describes common multi-stage chains progressing from phishing to malware installation and information theft.
  • HTML was the most common malicious attachment format; script extensions including JS, VBE, VBS, BAT and HTA were prominent.
  • Phishing pages and HTML attachments were used to steal account credentials and send them to Telegram; Korean financial-sector accounts represented 5% of accounts leaked via Telegram in June.
  • Dark-web posts claimed to offer financial and customer records associated with Santander, Alfa-Bank, Liberty Mutual and Fiserv, among others; the report says the claims and data scale were not officially confirmed.
  • The UnSafe group claimed a Deutsche Bank breach and released credentials and file-transfer records; Everest claimed Liberty Mutual and Fiserv as victims.
  • Gorz_Rostam claimed DDoS attacks targeting Gulf-region banking systems, but the report found no concrete evidence confirming damage from the claimed Bahrain attack.

Article Details

Publisher
Asec Ahnlab
Report Period
July 2026
Scope
Malware distribution, phishing, Telegram account leaks, deep web and dark web claims, and cyberattack cases affecting the Korean and global financial sectors.
Key Statistics
  • Phishing accounted for 31.6% of detections; loaders (19.9%) and backdoors (16.6%) brought the top three categories to approximately 68%.
  • HTML was the most common malicious attachment type at 24.4%; the top eight file extensions accounted for 80% of the total.
  • In June, domestic financial-sector accounts leaked via Telegram accounted for 5% of the total.
  • A seller reportedly claimed to have over 5,000 Santander-related records; the claim was not confirmed in the report.
  • A post related to Alfa-Bank claimed a CSV file containing 1,032,464 records; the report says the exact scale and official verification of cases were not confirmed.

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