Rewterz Threat Alert –Amadey Botnet – Active IOCs

Severity

Medium

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

• f29e03482ef250e5c8f2014f660bb86a
• 14f7c4b98e2c837e555d030bfbe740c4
• 0b6cc42e0e7dbac5b14d8272cf9a10dc

SHA-256

• 49128966da54f55e6fd663f8bb8da56e800de17363a33d53e8fc370e29f34e20
• 585892aac1dd2104c9dc5badf75efbc0d5f363456c084741af5e251402473de0
• ff3c3e7ea41955ee1ce503a05dd815a60f9f3d8765f117113212125154aa6136

SHA-1

• b2d2c6a09b5ad1566bcc3af92fcd4d6be1406bc1
• 695e50ac70754d449445343764d8a0c339323a04
• 50cd32af636a9f7361076dec109e1304bdccab35

URL

• http://185.172.128.63/v8sjh3hs8/index.php
• http://185.215.113.68/theme/Plugins/clip64.dll

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 promptly. Using multi-layered protection is necessary to secure vulnerable assets.
• 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.