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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 to use a combination of security tools and services.
Impact
- Information Theft
- Exposure of Sensitive Data
Indicators of Compromise
MD5
- 0cdb6440166b0135f7cd4feff60a5351
- 103132dd25d920faf1a80c863ac6f7de
- c3b8c716ce69ab23f6d71f2ae35a87d4
- dda01c237c5a096170569ede178fd7fa
SHA-256
- 36cf6ced1c9832ffb8bea522b7683ef40a540eb70a4202c0df752b758d31025b
- be5c43354185758418dcde039f6cb40f13c995c4ce9235bfe0c42b052507219b
- 253c946fde6de41e296816e78f453577628fcac506a1461f08dab412d03599fc
- edd2dc4b0833fb089b241f0a2493766d2c70efaf339162462672af68ea310e43
SHA-1
- 8c854b7f859cf9301ab7e8ce2a25260ab1f238b8
- 1ba3729ba97186544b892eb09cf49eb4f8f6592d
- 0b067dd880dbf7d38e35213a56ca20c6b51b8da4
- 763e08f979c863fcd77b327f216ad407555d78b7
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.
- 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. Prioritize patching known exploited vulnerabilities and zero-days.