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October 19, 2023Severity
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
- 2a5e90aa2289815c02e65e178d6a0408
- d70e3ee6839a3d05931a12c3397bf464
- 56701b1f2d0740d522f5cab06a52e8b6
- 3c25087d3e07d44e2b10100481edd6f8
- 8e331d81349ad48133f2bdd8a74b8b6d
- 6127a67b2a7f2a699144b75e856e0745
SHA-256
- 79c72991bea780ab47f1c4eba6c40d268e6374fca5802ebe5ac4f47601fe2855
- 38754b705fa71cd3c0868a4a41105693bbb48017da92c1b5bb580f52e3960f91
- 742c0721acf93e718d60a6305543607f4e1c187cdf2ec5693d926194a8de3745
- e22bfd5f9f7790e34c6e3efa9262e549d6fef09678f4020fa82d4738edc1630d
- 7b315683121d4a9fa17658dd652ca05f3ed9f40611b2700429c0da96ef5aeaba
- 331851528995da5cbcf726e0bacca9bd6c9282edc6274f141bb3a57b6d959834
SHA-1
- fe6956987f2df5685a98587601e97341e6df9e30
- 61b5294c95cc7b4249f315e4f5ea5204e1f2959b
- 5bf326f03564f76c98cb15ce00e891e39cbba1da
- d285b07801e57acbeda5be82ab1b085869eefc48
- 6482f84fe9eb7e97d9e24bc28859c84de63cbcc0
- 4e37895500f01f7985660cf9aa712b0f6c32b74c
URL
- http://77.91.97.162/g93kdwj3S/Login.php
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.