Rewterz Threat Alert – Amadey Botnet – Active IOCs

Severity

High

Analysis Summary

Amadey is a botnet, a type of malicious software that infects computers and turns them into “bots” or “zombies” that can be controlled remotely by an attacker. Botnets are often used to carry out cyber attacks, such as spamming, distributed denial-of-service (DDoS) attacks, and data theft. The Amadey trojan can also download additional malware. and exfiltrate user information to a command and control (C2) server. Moreover, it can engage the victim’s system. The threat actor sent spam emails that reference a package or shipment. Many of the emails claim in the subject line that the package or shipment is from the shipping company DHL. For example, “You have a package coming from DHL.” The bodies of all of the emails we observed in this campaign are blank. Each email has a ZIP attachment containing a Visual Basic Script (VBS) file. Each file name for the ZIP files is a series of numbers separated by an underscore, such as 044450_64504154.zip. The VBS files have the same name as their ZIP file, except they have the VBS extension rather than the ZIP extension.

Amadey has been observed targeting a wide range of organizations, including government agencies, financial institutions, and technology companies. The Amadey botnet is a sophisticated and flexible threat that poses a significant risk to organizations and individuals. To defend against Amadey and other botnets, it is important to keep software up to date, follow best practices for cybersecurity, and use a combination of security tools and services.

Impact

• Information Theft
• Exposure of Sensitive Data

Indicators of Compromise

MD5

• d4997d86eab428ad40aeb9e51a69051a
• fefd36fb3e7e38c793ab02243c3ad664
• b84b44c2bea03ec14ffa48509c522e94

SHA-256

• 0ec4e34372e516b5fd8bd85fdc8fae847fb735b79dc63b33dc0c8697745921b4
• c1f990342396218e7474cf1af7ccc1dc325c480eab04e3c303ecb0bba15a0688
• 716263dc7987ed6d0e62821c91a0b0fa5bb731587b78cbde287031df0c53e59f

SHA-1

• 777fe99fda5c4eda3669c58e85816439893d1695
• 4e0f586b52c8b0704a345d3556c8bb58714e33d4
• 8479600704f4444f5e9fc725ba48d4cbd13414da

Remediation

• Block all threat indicators at your respective controls.
• Search for Indicators of compromise (IOCs) in your environment utilizing your respective security controls
• Do not download documents attached in emails from unknown sources and strictly refrain from enabling macros when the source isn’t reliable.
• Enable antivirus and anti-malware software and update signature definitions in a timely manner. Using multi-layered protection is necessary to secure vulnerable assets
• Patch and upgrade any platforms and software timely and make it into a standard security policy.
• Enforced Access Management Policies.
• Along with network and system hardening, code hardening should be implemented within the organization so that their websites and software are secure. Use testing tools to detect any vulnerabilities in the deployed codes.