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Meduim
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
2b999ca7b09926583ba69257303e073a
f9f252d2dfbb062e1ccc62df48e3b531
SHA-256
242e00c2c3bfb41930b292448f79ac53cbec0f7315d4f71c23326a8ed5a51368
6b5df7909e349ce04b4ec2e3b02bd0f3c1f49173d7d1485946e4c4e9194e88ae
SHA-1
4533c1084c516fe80b85b59bcad441827573548a
a3e0035cef91cf65ca9e447e408895993b371c0c
Remediation
- Block all threat indicators at your respective controls.
- Search for indicators of compromise (IOCs) in your environment utilizing your respective security controls.
- Emails from unknown senders should always be treated with caution.
- Never trust or open links and attachments received from unknown sources/senders.